[HN Gopher] How transportation technologies shaped empires
       ___________________________________________________________________
        
       How transportation technologies shaped empires
        
       Author : agomez314
       Score  : 279 points
       Date   : 2023-01-06 15:25 UTC (7 hours ago)
        
 (HTM) web link (unchartedterritories.tomaspueyo.com)
 (TXT) w3m dump (unchartedterritories.tomaspueyo.com)
        
       | shae wrote:
       | This is why you need more mass transit where you live.
        
       | micro_charm wrote:
       | See also https://en.m.wikipedia.org/wiki/Marchetti's_constant IMO
       | there is a clear analogue for this with organizational size and
       | the extent of your product offering, the further off from your
       | core offering you extend the worse your entire offering becomes
        
       | drbeast wrote:
       | Ghengis Khan, Queen Victoria, and Alexander the Great have
       | entered the chat.
        
         | gadtfly wrote:
         | The Macedonian and Mongolian Empires shattered into more
         | manageable bits almost immediately.
         | 
         | For Victorian Britain:
         | https://upload.wikimedia.org/wikipedia/commons/8/86/Isochron...
        
           | sayrer wrote:
           | 1914 and 2016: https://www.rome2rio.com/labs/isochronic-
           | travel-times/
        
         | quartesixte wrote:
         | Eventually collapsed.
         | 
         | Collapsed eventually.
         | 
         | Collapsed immediately upon his death.
        
           | sorokod wrote:
           | Pretty much anything happens eventually.
           | 
           | Dinosaurs lasted 179 mil. years. The Roman state, between one
           | and two thousand (depends on how you count).
        
           | AnimalMuppet wrote:
           | OK, but England maintained Australia for centuries. Spain
           | maintained the New World for centuries. I'm not sure
           | "eventually collapsed" is proof that "it didn't work".
           | 
           | I mean, the Soviet Union eventually collapsed, and that
           | wasn't because of communication delays. _Everything_
           | eventually collapses. But  "stood for centuries, despite the
           | communication delays" kind of disproves the hypothesis. (Or
           | if it doesn't, given the things that collapse after centuries
           | without the communication delays, it means the hypothesis has
           | no predictive power.)
        
             | readthenotes1 wrote:
             | The same argument could be made for Great Britain and the
             | United States as well since the colonies were a part of GB
             | for centuries.
             | 
             | I think the same argument for Canada applies to Australia:
             | there must be a critical mass of well weaponed insurgents
             | before the time delay makes too much of a difference.
        
           | zopa wrote:
           | All empires collapse eventually.
        
             | pessimizer wrote:
             | Past performance isn't a guarantee of future results. With
             | modern technology, the next empire will never collapse.
        
               | csomar wrote:
               | The heat death will guarantee the collapse of all and any
               | empire.
        
               | gsich wrote:
               | Until it does.
        
             | meatyloafy wrote:
             | All except the last.
        
         | Beltalowda wrote:
         | Alexander the Great and the Mongol empire are specifically
         | addressed in the article. Maybe read before "entering the
         | chat"?
        
           | drbeast wrote:
           | RTFA and not write commentary off the cuff?
           | 
           | Hahahahahahahaha! You're funny.
        
         | readthenotes1 wrote:
         | he addressed all those didn't he?
         | 
         | "Queen Victoria, Chinese Gordon is on line one. Shall I tell
         | him to hold?"
        
         | insane_dreamer wrote:
         | Alexander the Great wouldn't count as his empire fractured upon
         | his death almost immediately after his conquests
        
         | [deleted]
        
       | kybernetyk wrote:
       | So no Mars province?
        
         | kcb wrote:
         | You can travel to Mars in 5 minutes so I don't think so. It's
         | clear even in todays world you don't need "boots on the ground"
         | to exert social or military influence.
        
         | layer8 wrote:
         | Another relevant factor is self-sufficiency regarding basic
         | needs. But yes, if/when a Mars colony becomes self-sufficient,
         | secession probably isn't far off.
        
           | RodgerTheGreat wrote:
           | Put another way, a mars colony that is not _mostly_ self-
           | sufficient is a death trap, because the lead time on any
           | supply shipments or rescue attempts is monumental even if
           | funding is unlimited. There will be ever-present pressure to
           | increase self-sufficiency. If complete self-sufficiency is
           | technologically achieved (and there aren 't inherent,
           | unavoidable issues with propagating humans on mars or
           | obtaining resources/energy), earth-based corporations and
           | governments have virtually zero leverage over mars, so
           | independence follows naturally.
        
       | manv1 wrote:
       | That's not true, as evidenced by many, many empires, past and
       | present (Spanish, British, Roman, American) that spanned more
       | than a month of travel.
       | 
       | What they're trying to say is that the span of control is limited
       | by the ability to project power/information to the extremities of
       | the empire. That makes sense, but the way they measure the limits
       | is wrong.
       | 
       | The way the empires get around this problem is by putting people
       | who have drunk the kool-aid in positions of power. While this can
       | lead to abuse (ie: the Spanish), it can also lead to surprising
       | amounts of consistency (all of the above).
       | 
       | Empires that fail are empires that require centralized decision
       | making...and that's due to the communication limits posited and
       | the generally poor quality of the staff in those types of
       | organizations.
        
         | nickelcitymario wrote:
         | Empires that expand beyond the 30 day travel limit tend to
         | fizzle out and crumble.
         | 
         | Today, of course, we travel the whole planet roughly 30 times
         | in that time frame. So it's not a limit on Earth anymore. But
         | it was definitely a problem for all previous empires. The ones
         | you listed prove the point. They all crumbled when they
         | expanded too far.
         | 
         | The reason is kinda obvious: If it takes 30 days to travel, it
         | takes 60 days to travel there and back. Which means there is,
         | at minimum, a 60 day delay between the start of a rebellion or
         | war and your ability to respond to it. That's assuming you were
         | ready for the news the moment you got it. Good luck with that.
         | 
         | It's just one of many reasons why wars are won more by
         | logistics than bullets.
         | 
         | So I think it raises two really interesting questions:
         | 
         | (1) Here on Earth, the elimination of this limit is pretty
         | recent. Should we anticipate an empire that spans the globe
         | truly taking over? (No need to sarcastically comment about
         | America today.)
         | 
         | (2) How does this impact space travel? Based on current and
         | foreseeable technology, there's no planet we can regularly
         | reach in that amount of time, because at any given time, the
         | other planet could be on the other side of the solar system.
         | Can we really colonize new areas if we can't reach them faster
         | than 30 days? Maybe we can. Communication is nearly instant
         | (relatively speaking), and there are no enemy combatants to
         | deal with. But they'll still be stuck on their own if any
         | unforeseen emergencies arise. Those never happen, right? Would
         | we most likely see the formation of a new nation on each planet
         | we colonize?
        
           | [deleted]
        
           | mcguire wrote:
           | Can I introduce you to the British Empire, pre-steamships:
           | https://www.britishempire.co.uk/maproom/sailingtimes.htm
           | 
           | Or in 1914:
           | https://transportgeography.org/contents/chapter1/the-
           | setting... (post-steamships)
           | 
           | The Spanish Empire was probably worse at its height.
        
         | [deleted]
        
           | [deleted]
        
         | Bouncingsoul1 wrote:
         | It is for the Romans though,
         | https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2609654 as
         | for the others I'm a bit sceptical but haven't to knowlegde
         | about them either
        
         | derefr wrote:
         | > The way the empires get around this problem is by putting
         | people who have drunk the kool-aid in positions of power.
         | 
         | I always understood the aphorism as taking delegation of power
         | into account -- it's "one month of travel" not because of the
         | needs of top-down command-and-control, but rather because
         | delegated power that's more than a month away falls past some
         | threshold of latency required to "keep them in hand."
         | 
         | The aphorism might make more sense flipped in perspective and
         | inverted: as a magistrate/governor, if you see your colonists
         | suffering under the tyranny of a remote power, you'd better be
         | at least a month away from that power to be able to quietly
         | rebel under the nose of that remote power. Otherwise a quiet
         | rebellion will never work -- any closer, and they'll be
         | constantly watching/auditing you. At a closer distance, if you
         | want to rebel, the only option is an active, bloody rebellion
         | -- and if that's unpalatable to you, then you'd better just not
         | rebel!
        
           | bobthepanda wrote:
           | There's an old Chinese proverb for this that's pretty
           | succinct:
           | 
           | "The mountains are tall and the emperor is far away."
        
         | jimmytidey wrote:
         | "Drunk the cool aid..." In the UK case I've heard the idea that
         | the Publc School system emerged for exactly this reason.
         | ('Public' schools being the most elite schools in the UK).
         | 
         | A relatively small number of schools shaped a class of people
         | who all thought in exactly the same way, so they would behave
         | predictably even when far away and in a new context.
         | 
         | Public schools, are not coincidentally noted for a focus on
         | 'playing by the rules' and 'fair play', as inculcated through
         | sport. Not to mention never breaking your word. All handy
         | traits if your goal is breeding administrators you can trust
         | without supervision.
        
           | kwhitefoot wrote:
           | > Not to mention never breaking your word.
           | 
           | You surely jest. A substantial proportion of British
           | politicians, on the right mostly, were educated at public
           | schools. They don't all have a shining record when it comes
           | to integrity and honesty.
           | 
           | Twenty one (I think) of Britain's prime ministers went to
           | Eton including Johnson and Cameron. Are we to believe that
           | those two scoundrels are exceptions?
        
             | flerchin wrote:
             | Johnson and Cameron hardly led the Empire.
        
             | scotty79 wrote:
             | You can't give word to the public. It simply doesn't count.
             | But you can give word to people that made the public vote
             | for you and that's rarely broken.
        
             | im3w1l wrote:
             | There is lack of integrity and then there is _lack of
             | integrity_. Like imagine a minister only hiring relatives,
             | embezzling billions, taking bribes, extorting for bribes,
             | selling information and influence to foreign adversaries.
             | Imagine people that don 't even pretend to care about their
             | duties, to the point that are indifferent to their people
             | starving (what's it to me, if they riot we can always shoot
             | em dead?).
        
             | notch656c wrote:
             | I think they meant trustworthy to superiors and possibly
             | peers. British populace are the subjects of their
             | politicians, and thus no trust need be proffered.
        
             | newsclues wrote:
             | Just because some public school graduates go on to become
             | dishonest politicians, does not mean that the school itself
             | isn't there to educate and select honest administrators of
             | the state/etc.
        
             | ClumsyPilot wrote:
             | Sometimes its i.protant to understand the culture
             | correctly- perhaps the institution has degraded now. Or
             | perhaps your word only matters if it was goben to an equal,
             | and Joe the public doesn't count? I dont know
        
             | jimmytidey wrote:
             | The system doesn't work anymore. I don't think There is a
             | country-specific elite culture now.
        
           | ikrenji wrote:
           | playing by the rules and fair play is good for society at
           | large, not just prospective administrators lol
        
           | Balgair wrote:
           | https://www.youtube.com/watch?v=zSGWoXDFM64
        
             | jfk13 wrote:
             | For another awesome rendition, try the Simon Gallagher
             | production, with Derek Metzger as the Major-General; the
             | entire show is (in my opinion) utterly fantastic.
             | 
             | https://www.youtube.com/watch?v=9DJaNbD6R2s&list=PLXRhW-
             | jVlF... (shame about the video quality, but it's still well
             | worth watching)
        
             | jimmytidey wrote:
             | Amazing reference!
        
             | unsui wrote:
             | I've never seen the source, but was reminded of this
             | excellent homage: - https://youtu.be/BQXbbWVJ4sA?t=133
        
           | notch656c wrote:
           | Being trustworthy seems like an important trait in the older
           | agrarian societies that depended on long-term planning and
           | exchange, whether you were a farmer or an administrator.
        
             | wolverine876 wrote:
             | It seems very important if you are talking to me today. Why
             | should I listen to you?
        
             | jimmytidey wrote:
             | Yes, although I'm not sure they had the capacity to
             | institutionalise eduction to that end.
        
         | notch656c wrote:
         | >centralized decision making
         | 
         | Which bodes poorly for increasing federal power in the US.
        
           | malfist wrote:
           | What part of the US is more than a month's travel from
           | Washington DC?
        
             | prottog wrote:
             | The GP already pointed out that the "month's travel" rule
             | doesn't apply in all cases. The poster you're replying to
             | does have a point about increasing amounts of decisions
             | being made at the federal level in this country, as opposed
             | to state or local levels closer to the people affected.
        
           | ssnistfajen wrote:
           | Hello? This is year 2023, not 1542. Communication happens at
           | the speed of light and the only bottleneck is the human
           | processing said communication. Obsessively devolving power to
           | nesting lower levels of decision making bodies is just about
           | the worst thing to do when technology has increasingly
           | enabled organizations that are slim at the top to effectively
           | manage complex systems at scale instead.
        
             | notch656c wrote:
             | Can you explain why more local decision making must be the
             | worst thing to do?
        
             | bilbo0s wrote:
             | The thing is, sometimes, centralized decision makers take
             | decisions that are bad because they are too far removed
             | from the consequences of the decisions. For instance,
             | decisions on, say, water rights, made by the federal
             | government in the US. The federal and state governments
             | have effectively collaborated to create a slow rolling
             | disaster across the entire west.
             | 
             | (Of course, now I think about it, local and state
             | governments also take terrible decisions. Slavery and Jim
             | Crow spring to mind. So there really is no "good" way to
             | solve the "decision making" problem. I guess you're
             | basically screwed if you have to allow other people to make
             | decisions for you.)
        
               | prottog wrote:
               | > So there really is no "good" way to solve the "decision
               | making" problem.
               | 
               | Insofar as humanity hasn't yet figured out how to make
               | good decisions all the time ;-) that's true. However, I
               | posit that keeping decisions at as low a level as
               | possible lets mistakes be more easily undone by higher
               | levels in the hierarchy; hence Justice Brandeis's
               | laboratories of democracy.
        
             | prottog wrote:
             | > the only bottleneck is the human processing said
             | communication
             | 
             | You said it yourself. I don't care if the ansible lets you
             | communicate faster than the speed of light; the capacity of
             | leaders at the top to understand lower-level facts and
             | needs has not changed much from 1542 to 2023.
        
             | wolverine876 wrote:
             | The local decision-makers know much better the local needs:
             | Local people can communicate with local decision-makers,
             | they have far more experience with local needs (lifetimes
             | worth), and human cognitive capacity is limited - nobody
             | single federal decision maker can learn and know what all
             | the local mayors know. Nobody a thousand miles away can
             | know my neighborhood the way I do.
             | 
             | That's a reason decision-making in business is often pushed
             | to the lowest level - the central people can't know as
             | much.
        
         | UncleMeat wrote:
         | History of Empire, History of Travel Technology, and History of
         | Communications Technology are _huuuuge_ fields with tons of
         | professionals working today. I 'm a little concerned about huge
         | claims being made about empire by a Stanford MBA and a
         | community of people mostly experienced in software and tech.
         | 
         | The historians would love for you to read their books! AHA is
         | literally happening _right now_! Go to bars in Philly and talk
         | to them!
        
           | Karrot_Kream wrote:
           | You don't even need to talk to someone. Pick up any book on
           | European colonialism, the Roman Empire, Japanese imperialism,
           | Chinese Imperial dynasties, medieval South Asia, pre-Islamic
           | Persian empires, etc etc. Reddit's r/askhistorians is a great
           | reference for sources on the more popular topics.
        
           | renewiltord wrote:
           | Yeah, but software engineers are better at many things than
           | professionals in their fields. The classic example is Jeff
           | Bezos and gang stopping their companies from flying people
           | to/from China a month before US authorities reacted to
           | COVID-19. They also cancelled conferences two weeks before
           | shelter-in-place and asked people to work from home.
           | 
           | Tech professionals said that masks would help in the early
           | stages while the US Surgeon General said "Masks don't work!"
           | and Dr. Fauci said that you shouldn't be wearing any.
           | 
           | This is the magic of tech: the people there are there for
           | comparative advantage. They would be better than
           | epidemiologists at epidemiology and better than public health
           | experts at public health. But they're _much_ better at tech
           | than epidemiologists and public health experts are at tech,
           | and so they go to tech.
           | 
           | In a similar vein, I would be unsurprised to find that new
           | insights about history come from technologists. Of course, I
           | don't think this is one.
        
             | UncleMeat wrote:
             | I....
             | 
             | Software Engineers are not better at making accurate
             | historical claims than historians. I'd be fucking _baffled_
             | if  "new insights about history come from technologists" in
             | any meaningful quantity. Like, it'd be among the most
             | surprising thing involving human behavior I could imagine.
             | Like, what software engineers do you know that have spent
             | even a _minute_ working in an archive?
             | 
             | I see no way that this comment could be made without just a
             | complete ignorance of the profession of history.
        
               | nostrademons wrote:
               | I was assuming satire, but it really is hard to tell on
               | the Internet...
        
             | kcartlidge wrote:
             | I couldn't decide whether/how to vote as I couldn't work
             | out if it was sarcasm. It seems like it _must_ be, but it
             | 's written so earnestly.
        
           | wolverine876 wrote:
           | I always look first for the reason I should trust them (how
           | frustrating to look after reading a long article!). Don't
           | forget they are also a highly trained engineer in SV, and
           | made products used by lots of people today. Why not
           | collaborate with a historian?
           | 
           | > Go to bars in Philly and talk to them!
           | 
           | ? What happens in bars in Philly? Nobody does it elsewhere?
        
             | UncleMeat wrote:
             | The American Historical Association Annual Conference
             | (colloquially, AHA) is happening in Philly this weekend.
             | Academics like to go out to drink after a day of talks.
             | 
             | Mostly tongue-in-cheek. I don't actually think the best way
             | to meet historians is to go to random bars in the cities
             | hosting major conferences.
        
             | dcow wrote:
             | https://www.historians.org/annual-meeting
        
       | onion2k wrote:
       | This will significantly limit humanity's ambitions to colonize
       | outer space.
        
         | kranke155 wrote:
         | Depends on the velocity. 1 light month is pretty big.
        
           | onion2k wrote:
           | _1 light month is pretty big._
           | 
           | So is the universe. In fact, 1 light month gets you across
           | 0.00000000061% of it. If your empire on Earth was the same
           | size it'd be 300 square meters. About the size of a big house
           | with a nice garden.
        
           | AnimalMuppet wrote:
           | Within one light month of earth, there is only one solar
           | system - the one containing Earth, obviously.
        
         | nextaccountic wrote:
         | Unless the settlers form a democratic and self-governing
         | society, not an authoritarian empire
        
           | PeterisP wrote:
           | A society can easily be democratic and self-governing within
           | itself but do authoritarian subjugation of other societies,
           | or be subject to such.
        
         | jerf wrote:
         | Fortunately, while this study may exist, imperial ambitions
         | know no bounds, so we'll colonize just fine. Sure, decades
         | later, they may break away, but that's decades later's problem.
         | 
         | Plus, this analysis is implicitly in the context of a world
         | where the regions have the ability to be self-sustaining on at
         | least the basics of life, so breaking away is a viable option.
         | If the "empire" is also "your supply of oxygen", breaking away
         | will be a lot trickier. For a space colony or set of colonies
         | to be able to break away, they _first_ have to be truly 100%
         | self-sufficient, and that 's a tall bar for the forseeable
         | future. They then have to be able to militarily match what the
         | empire is willing to throw at them to retain them, and that's a
         | very complicated analysis, made all the more complicated by not
         | knowing what the exact technologies will be at the time.
         | 
         | (Plus, not all empires are complete buffoons. They at least
         | begin being competently run. The empire will _know_ that to
         | break away the colonies must be self-sufficient, so they will
         | take steps to _ensure_ they won 't be self-sufficient. And the
         | colonies will take steps to become secretly self-sufficient.
         | Long before open rebellions occur, there will have been a
         | clandestine war of self-sufficiency.)
        
         | glitchc wrote:
         | Those colonies would simply become independent in a relatively
         | short period of time.
        
         | zopa wrote:
         | Why? Settling new places doesn't have to mean expanding the
         | existing polity: the settlements can be self-governing. See the
         | Polynesian expansion through the Pacific, which to me is a
         | closer (and more hopeful) analogy to space colonization than
         | anything nineteenth-century Europeans or ancient empires did.
         | 
         | And so long as we're just thinking of this solar system,
         | there's also the question of whether what's important is
         | transit time or communication time. Historically those were
         | identical; now very much not.
        
         | stakhanov wrote:
         | Or increase them? Presumably some portion of humanity might be
         | motivated by trying to get away from existing empires (maybe
         | creating new ones, maybe not), rather than expanding existing
         | empires.
        
       | asah wrote:
       | Travel? or communication?
       | 
       | (in the ancient world, they were the same but in the modern world
       | they're obviously different for example if we colonize Mars)
        
       | FredPret wrote:
       | So... the moon, or even Venus?
        
         | shagie wrote:
         | Not sure Venus is within 1 month travel time.
         | 
         | Granted this is with Apollo era technology... but we're still
         | talking Saturn V
         | 
         | https://en.wikipedia.org/wiki/Manned_Venus_flyby
         | 
         | > The proposed mission would have used a Saturn V to send three
         | astronauts on a flight past Venus, which would have lasted
         | approximately one year.
         | 
         | > ...
         | 
         | > Phase C would be the actual manned flyby, using a Block IV
         | CSM and an updated version of the Venus flyby S-IVB which would
         | carry a large radio antenna for communication with Earth.
         | 
         | > ...
         | 
         | > The Phase C mission was planned for a launch in late October
         | or early November 1973, when the velocity requirements to reach
         | Venus and the duration of the resulting mission would be at
         | their lowest. After a brief stay in Earth parking orbit to
         | check out the spacecraft, the crew would have headed for Venus.
         | ... After a successful S-IVB burn, the spacecraft would have
         | passed approximately 3000 miles from the surface of Venus about
         | four months later.
         | 
         | Of note https://trajbrowser.arc.nasa.gov/traj_browser.php is
         | fun to play with. - Custom list (Venus), one way rendezvous,
         | minimize duration, all trajectories.
         | 
         | The shortest one is an 80 day one "burn straight there"
         | approach.
         | 
         | I'm not sure that NASA has that updated for more recent years
         | (its a search - not a compute) - still gives you an idea of
         | what is doable and the inner solar system opportunities are
         | fairly consistent (compared to the Grand Tour
         | https://en.wikipedia.org/wiki/Grand_Tour_program which is once
         | every 175 years). See also
         | https://en.wikipedia.org/wiki/Interplanetary_Transport_Netwo...
         | and if that sounds like fun, then High Frontier board game
         | might be up your alley ( current edition
         | https://iongamedesign.com/products/high-frontier-4-all
         | https://boardgamegeek.com/boardgame/281655/high-frontier-4-a...
         | ).
        
           | shagie wrote:
           | The Venus missions...
           | 
           | One way rendezvous - 80 days is the minimal - https://trajbro
           | wser.arc.nasa.gov/traj_browser.php?NEAs=on&NE...
           | 
           | If you're just doing a flyby and letting the ship then get
           | lost, it can get down to 48 days https://trajbrowser.arc.nasa
           | .gov/traj_browser.php?NEAs=on&NE...
           | 
           | The one way flyby is not likely one that would be good for
           | human travelers as you aren't really stopping (or even
           | slowing down enough to get captured).
           | 
           | The shortest round trips are just over a year long. https://t
           | rajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NE...
           | 
           | The trip _there_ is only 90 days, but the return leg is one
           | of the least optimal options with a 280 day  "climb back out"
           | trip. You could do a 96 day there, and 80 day back, but to
           | get the right orbital arrangement it then means that you'd
           | need to stay at Venus for 1.3 years.
           | 
           | It is a neat thing to play with and see what options exist.
        
       | TomK32 wrote:
       | Never knew those cataracts were are thing
       | https://en.wikipedia.org/wiki/Cataracts_of_the_Nile
        
       | [deleted]
        
       | scythe wrote:
       | I'm tempted to dispute whether the Carolignian Empire was too big
       | _per se_. If you put the capital at Lyon (or Geneva), everything
       | is fully reachable in a month on this graph. The problem, rather,
       | was that Lyon was never made the capital (rather Metz in the far
       | north), or at least not in time to prevent fragmentation.
        
       | [deleted]
        
       | BurningFrog wrote:
       | By this logic, the Mars colonies _will_ be independent.
        
         | idontpost wrote:
         | [dead]
        
         | [deleted]
        
         | swagasaurus-rex wrote:
         | With better propulsion, trips to mars could be shorter. There
         | are times where Mars is on the opposite side of the sun, and
         | times when Earth and Mars are close.
        
       | aj7 wrote:
       | Somebody calculate a light month.
        
         | PeterisP wrote:
         | In essence, one star system. Planet orbits are generally much
         | less than a light month, and distance between closest stars is
         | generally much larger than a light month.
        
         | carapace wrote:
         | Kind of a tangent, but uh, this is my personal favorite
         | argument for why Bitcoin et. al. aren't needed (yet): the
         | diameter of the Earth is small compared to the speed of light.
         | Maybe when we colonize interstellar space we will need
         | blockchain.
        
         | shagie wrote:
         | 30x distance to Voyager
         | 
         | 1/50th the distance to the nearest star (Proxima Centauri).
        
         | awb wrote:
         | 1 light year = ~0.3 parsecs
         | 
         | 1 light month = ~0.025 parsecs
        
         | [deleted]
        
         | xwdv wrote:
         | It's about 5000 AU.
         | 
         | That means an Earth based space empire could encompass the
         | entire solar system, but the limit of its reach would only
         | extend part way into the Oort Cloud. Beyond this would be a
         | lawless frontier.
         | 
         | Since this is based on the speed of light, it could be the
         | maximum size for any empire in the universe without the use of
         | some kind of FTL technology.
        
           | randomdata wrote:
           | _> it could be the maximum size for any empire in the
           | universe without the use of some kind of FTL technology._
           | 
           | But perhaps communication with the capital isn't even
           | necessary if you could clone the function of the capital?
           | Imagine, for example, a cluster of AI agents, that are
           | programmed to think just like the capital compromised of
           | humans would, spread out throughout the universe. Each clone
           | site may be limited to a solar month of reach, but the system
           | as a whole would theoretically remain a single empire.
        
           | krisoft wrote:
           | > Since this is based on the speed of light, it could be the
           | maximum size for any empire in the universe without the use
           | of some kind of FTL technology.
           | 
           | That assumes that the "1 month from capital" is universal.
           | Maybe humans are just quarrelsome, and if uplifted capybaras
           | would rule an empire they could keep it together even if
           | their empire has a 2 year radius. Who knows.
        
             | xwdv wrote:
             | I think you're right. There must be some more variables to
             | a formula that determines max empire size.
             | 
             | Beings that live twice as long as humans would feel that
             | the trip to Alpha Centauri is only half as long as what a
             | standard human of equivalent age would perceive it. This
             | could potentially mean their empires could also be double
             | in size at max even if they have the same disposition as
             | humans.
             | 
             | Therefore, as an advisor to an emperor of an interstellar
             | empire, I would strongly encourage lengthening lifespans as
             | the key to increasing the reach of government. The longer
             | the people can live, the more tolerant they will be of long
             | voyages and high latencies.
        
             | Someone wrote:
             | Also, aliens could live a lot slower (say if they evolved
             | in a relatively cold corner of the universe where there's
             | less energy to burn per second) and/or longer.
             | 
             | Looking at some 'aliens', I don't think ant colonies can
             | cover an area equal to a month's travel.
             | 
             | = I would guess "1 month" isn't the limiting factor. "1/p
             | of the life expectancy of a grownup" makes more sense to
             | me. _p_ then would be around 500 (500 months is about 42
             | years)
        
       | jameshart wrote:
       | "England with its American colonies" as an example of
       | overstretching this limit?
       | 
       | Once again, when explaining a historic trend or event in terms of
       | what happened in the US, we forget about the existence of the
       | control case: Canada.
        
         | SoftAnnaLee wrote:
         | I would say that Canada managed to stay loyal to the crown
         | because for two major reasons. The first being the founding
         | "myth" of Canada being the British loyalist colonists of the US
         | migrating as a result of the US' revolution. Them fleeing north
         | to a major seat of political power likely had a strengthening
         | effect on being a willing subject to the crown than most
         | colonies.
         | 
         | Secondly, Canada is something of an imperial power unto itself.
         | There are countless stories of armies marching under the crown
         | violently clashing with nations that existed on the continent
         | prior to European colonization. Likewise, even other European
         | descended colonist as well as the Metis were subjugated by
         | British rule as the Anglophone powers expanded across the
         | continent (e.g. Queen Anne's War, Red River Rebellion, and
         | Fenian raids). Gaining the ability to exploit the natural
         | resources that these other nations and colonies held.
         | 
         | The crown was a convenient way to gain both legitimacy from the
         | British loyalists who settled in Canadian territory and a
         | reliable trading partner to receive resources from in the
         | British Canadian bids for expansion. Compared to the US, who
         | used democratic rule to gain its own legitimacy; and who's
         | natural resources were abundant enough to be a valuable trading
         | partner.
        
         | [deleted]
        
         | macspoofing wrote:
         | >we forget about the existence of the control case: Canada.
         | 
         | Is it though? England did lose Canada to home-rule. In fact, I
         | contend that a major reason why a newly independent (but also
         | broke and fledgling) Canada was not annexed by the US was
         | mainly because of the American preoccupation with civil war and
         | Reconstruction, and the diplomatic efforts of John A.
         | Macdonald.
        
           | cma wrote:
           | They lost it to home rule only after it took less than a
           | month to travel there with steam ships, right?
        
             | dsr_ wrote:
             | And also after communication time dropped from 2 weeks to 2
             | minutes (telegraph, 1866).
        
             | macspoofing wrote:
             | The point was they couldn't hold the Canadian colony.
             | Britain didn't give home-rule to Canada because of their
             | good-will. American belligerence towards European presence
             | in the New World, and their rise as a major military and
             | economic power, made holding Canada practically impossible
             | by the mid 1800s (for example, it was untannable for
             | Britain to maintain a large military presence in Canada
             | anymore). Britain fully expected Canada to be annexed.
             | Without the civil war and reconstruction preoccupying
             | Americans during the critical early and fledgling years of
             | the Canadian Dominion, I don't think Canada would have
             | survived as a nation.
             | 
             | In another thread, I also made an argument for another
             | major mitigating factor with respect to Americas, namely,
             | the native populations were wiped out by old-world diseases
             | which prevented local rebellions from succeeding and
             | allowed Europeans to establish large population centers.
        
               | jameshart wrote:
               | But the article literally argues that the British loss of
               | the American colonies in 1776 is an example of how an
               | empire can't retain territory at a month's remove.
               | 
               | To which the existence of British colonies in Canada
               | after 1776 is kind of a direct rejoinder, right? The
               | eventual loss of those colonies is irrelevant to the
               | point that you can't explain the American revolution as
               | being an inevitable consequence of remoteness.
        
               | TheOtherHobbes wrote:
               | An empire can't retain _hostile and unpacified_ territory
               | beyond a certain limit - which may be set by time,
               | communications, access to local resources and imported
               | logistics, other factors, and all of the above.
               | 
               | If the territory is fully pacified with no significant
               | resistance and/or it's run by dedicated loyalists with
               | plentiful local resources the limit doesn't apply.
               | 
               | Basically an empire can only retain territory _against an
               | active threat or resistance_ within certain limits. If
               | there is no active threat, or the threat is too minor to
               | be a concern, the territory can be considered stable and
               | fully colonised.
        
               | jameshart wrote:
               | Aha. So the rule is: empires can only hold territory that
               | they are able to hold. Got it. Useful predictive
               | principle.
        
           | jameshart wrote:
           | Canada was still subject to the legal authority of the UK
           | parliament until 1982, and was certainly considered fully
           | part of the British Empire until WWI
        
             | mymythisisthis wrote:
             | Canada was essentially independent since WWI.
        
             | bee_rider wrote:
             | I think the article was discussing actual facts-on-the-
             | ground empires, rather than polite legal fictions invented
             | to spare the UK from having to face their loss of global
             | status.
        
           | [deleted]
        
           | i_love_cookies wrote:
           | wasn't the war of 1812 partly/mostly driven by a US desire to
           | annex canada?
        
             | macspoofing wrote:
             | The American state by the mid-1800s was not that same as
             | the one in the early 1800s. America grew into a major
             | economic and military power by then, the point where it was
             | untenable for Britain to maintain direct control over
             | Canada, or to even maintain a major military presence
             | there. The British were ostensibly kicked out of North
             | America by America.
        
         | meatyloafy wrote:
         | There is quite a difference between conquering (and thereby
         | assimilating) versus killing almost all natives and then
         | populating the place with your own settlers..
        
           | macspoofing wrote:
           | >versus killing almost all natives and then populating the
           | place with your own settlers..
           | 
           | The native population was not killed but rather decimated by
           | disease. Pre-colonial population of North America was on the
           | order of 60 million - there was zero chance European powers
           | being able to hold that size of population over a period of
           | time. Contrast that to Africa, which today has a minimal
           | population of European descendants ... because that native
           | population had immunity.
        
             | stjohnswarts wrote:
             | However the natives where still wiped out by European
             | diseases nonetheless, a direct result of Europeans coming
             | here, I'm sure the Europeans of the time were grateful for
             | that even if it wasn't a result of direct action on their
             | part, they would have been fine with it happening.
        
             | jameshart wrote:
             | That's a funny definition of 'not killed' you're using.
        
               | kspacewalk2 wrote:
               | They died, but they were indeed not killed. You may say
               | something flowery like "the diseases killed them", or
               | "the arrival of the Brits killed them", but the British
               | empire or its subjects did not kill the vast, vast
               | majority of Native North Americans who died as a
               | consequence of their arrival.
        
               | klibertp wrote:
               | Well, news outlets are perfectly comfortable with saying
               | that this or that COVID policy "killed" millions and will
               | kill even more... If only the British instituted
               | lockdowns, quarantine, and mass testing for diseases, the
               | Native Americans could have lived!
               | 
               | (Not saying this is the right perspective, but I
               | understand why people would argue for it, especially when
               | using ahistorical lens of today's diseases handling)
        
               | meatyloafy wrote:
               | They were killed by what the settlers brought with them.
               | No, it was not deliberate (#), but nevertheless, their
               | arrival is what killed most of the natives.
               | 
               | (#) Obviously the settlers would have preferred to keep
               | the natives alive since then they would not have needed
               | to ship vast quantities of Africans across the ocean to
               | enslave, but could have just done that with the locals.
        
               | macspoofing wrote:
               | >They were killed by what the settlers brought with them.
               | No, it was not deliberate (#), but nevertheless, their
               | arrival is what killed most of the natives.
               | 
               | That's all I meant to clarify. You'd be surprised how
               | many people today actually think that the native
               | population was wiped out through deliberate and
               | intentional action. Your wording made it seem you
               | believed that as well, but that seemed to not be the
               | case.
               | 
               | >Obviously the settlers would have preferred to keep the
               | natives alive since then they would not have needed to
               | ship vast quantities
               | 
               | That's a caricature.
        
               | ldh0011 wrote:
               | It may not be the case that deliberate and intentional
               | actions alone could have wiped out the natives but it
               | seems pretty clear that there _were_ a lot of deliberate
               | and intentional actions both to kill them and take their
               | land (Trail of Tears, Spanish conquests in South
               | America). Those actions just wouldn 't have been as
               | successful without the diseases.
        
               | 8note wrote:
               | It was intentional though. The bison didn't disappear
               | because of western disease, they were hunted out to break
               | up the natives ability to resist, so they could be killed
               | and corralled, and the land be granted to settlers.
               | 
               | Canada intentionally withheld food it owed to natives as
               | part of treaty agreements, with the understanding that if
               | a bunch of people starved to death, Canada wouldn't need
               | to send as much food.
               | 
               | Similarly, disease was spread intentionally through small
               | pox blankets, with the intention listed
        
         | bbarnett wrote:
         | And even more so, re: distance, Australia.
        
           | macspoofing wrote:
           | The article contends that the reason why the 'month rule' is
           | in play is because of the logistics of ruling over a local
           | population which will attempt to rebel.
           | 
           | So I think a mitigating factor for US, Canada, Australia was
           | that the local native population was wiped out by old-world
           | diseases, so there was minimal capability for local
           | population to rebel. This is also the major factor of why
           | those nations' population is largely made-up of the
           | descendent of the colonists. Contrast that with Africa, which
           | suffered from similar attempts at colonialism, was much
           | closer to Europe, but because its native population was not
           | susceptible to European diseases (and in fact, the colonists
           | were decimated by native diseases like malaria), Africa today
           | has a tiny number of colonial descendants (around 5 million
           | European descendants out of a population of ~1 billion)
           | 
           | The population of pre-colonized North America was on the
           | order of 60 million (European population was on the order of
           | ~70 million). Had that population been maintained (i.e. not
           | wiped out by old-world diseases), there was zero chance of
           | European powers being able to establish large colonial
           | populations. In that scenario, once the technological
           | advantage was removed (due to trade, for example), I think
           | you would have seen successful native rebellions.
           | 
           | I would say South America also follows this pattern. No
           | chance of the Spanish being able to establish large colonial
           | populations or maintain hold over native South American
           | populations had they been not wiped out by old-world
           | diseases.
        
         | mardifoufs wrote:
         | You are right of course but I think Canada is a pretty unique
         | case. Canada exists in huge part _because_ of the american
         | revolution. British-american loyalists have basically founded
         | upper Canada, which is now Ontario, so it makes sense that they
         | were particularly close to the throne and the British homeland
         | and government. French-canada was also just recently conquered
         | and placated by the Quebec Act, but still tried a couple of
         | uprisings during the Patriot wars of 1837-38.
         | 
         | I don't think Canada would've stayed british without the
         | loyalist escaping here, since they made it an inherent part of
         | their identity to _not_ revolt against the british as opposed
         | to the americans they left behind. But agreed, there are too
         | many exceptions in general to the article 's point.
        
           | jameshart wrote:
           | So... empires can't retain territory over a month away from
           | its capital, unless it's populated by people loyal to the
           | empire?
           | 
           | Isn't the point of the month rule that it's hard to maintain
           | a loyal population at that distance? So this amounts to
           | saying 'well the rule doesn't apply to Canada because the
           | rule doesn't account for Canada'.
           | 
           | Right. So it's a bit of a rubbish rule then?
        
             | mardifoufs wrote:
             | I agree that the rule is basically worthless, but my point
             | was more that Canada had an exceptionally loyal population,
             | and disproportionately so compared to what we coule expect
             | from a "normal distribution"! It can, in part, explain the
             | rift between the US and Canada :)
        
               | [deleted]
        
           | masklinn wrote:
           | > You are right of course but I think Canada is a pretty
           | unique case.
           | 
           | As opposed to Australia, New Zealand, and South Africa?
        
             | mardifoufs wrote:
             | Yes, if you read the rest of my comment I explained why.
             | Canada has had a very big (relatively speaking) influx of
             | deeply loyal british-american refugees that often directly
             | fought the revolutionaries down south.
             | 
             | That meant that the early history of english canada was
             | very deeply influenced by an almost identity defining
             | loyalism to britain, because those refugees often left
             | everything behind in the US to stay loyal the crown. In a
             | way, being british was the entire point of early
             | anglocanadian identity.
             | 
             | I think that makes it pretty different from Australia, a
             | penal colony and South Africa which was conquered more than
             | colonized (and was very hard to hold on for the british). I
             | was more trying to explain why Canada was an outlier in the
             | Americas, and how Britain managed to hold it very easily
             | for so long, even with a free population and little direct
             | military occupation.
        
           | wintogreen74 wrote:
           | I'm a 10th+ generation Canadian of German ancestry, whose
           | relatives had both an affinity for the British Empire
           | (initially fleeing persecution to England) and a practical
           | one: rich farmland in exchange for fighting with the
           | loyalists against the upstart colonists. It's hard to
           | determine which had the bigger impact.
        
           | bregma wrote:
           | The influx of loyalists was a couple of generations before
           | the 1837 rebellions in both Upper and Lower Canada. Yet
           | another generation elapsed before home rule with responsible
           | government was devolved from Westminster and a few more
           | before Canada was considered "independent" from the
           | centralized Empire by the Statute of Westminster in 1931.
           | 
           | A century is a pretty long time for your argument about the
           | beliefs of some individuals to stay valid.
        
             | mardifoufs wrote:
             | Yes that's my point though. The patriot wars happened after
             | the loyalists were well settled, and at a point when upper
             | canada in general was almost as established as lower
             | canada. French-canada was barely loyal, and would've
             | probably been a huge torn in the backside of Britain if it
             | wasn't balanced by a super loyal anglo population that
             | counterbalanced the animosity of french canada.
             | 
             | The loyalists shaped the relationship Canada had with
             | britain, and while I'd guess even their descendants were a
             | minority (relative to immigrants) by the mid 19th century,
             | it still defined Canadian identity even to this day. If
             | Canada hadn't seen that initial influx of usually rich,
             | upper class loyalists that became the founding stock of
             | upper canadian politics/elite, we might have had a very,
             | very different outcome. One that is more in line with most
             | other colonies in the New World.
        
         | tgv wrote:
         | Or Spain and South America?
        
           | frr149 wrote:
           | Evwn better, Spain and the Philipines
        
         | charlieyu1 wrote:
         | Russia to Far East?
        
           | mardifoufs wrote:
           | Almost lost it during the russo-japanese war because it was
           | way too far and very hard to deploy troops to, even with the
           | fledgling trans siberian line. Though I agree that it's a
           | good example!
        
           | idontpost wrote:
           | [dead]
        
       | adolph wrote:
       | There are some interesting ideas in there that should be more
       | fully worked out. Perhaps they have and folks could suggest
       | further reading?
       | 
       | Travel is a suitcase word in that Pueyo doesn't distinguish among
       | what is being moved: material, people, information. In the
       | earliest days maybe there was less of a difference, except for
       | the cases where there was a significant difference such as the
       | Inca chasqui which operated as a relay race.
        
       | dudeinjapan wrote:
       | Civilization the game needs to re-add travel along rivers. If I
       | remember correctly you could do it in Civ II because rivers were
       | tiles.
        
       | jkingsbery wrote:
       | If the hypothesis includes the stipulation "from the capital," it
       | would have been useful to see some commentary on what the author
       | thought about the Roman Empire moving its capital (or having
       | multiple emperors each with a capital).
        
       | 0xbadcafebee wrote:
       | Travel time is more important in wartime. It's quite hard to
       | conquer a place if your supply lines are too long. But if you do
       | conquer, you can hold it for a long time with much less effort.
       | 
       | I found this part of the article to be nonsense:
       | Alexander the Great conquered most of the "known world" of his
       | day.       But his conquests took them 10 years, and after his
       | death, the empire was split in six.       Which further proves
       | that a strong army, without proper transportation technologies,
       | can't hold an empire together.
       | 
       | Uhhh..... first of all dude, only taking 10 years to conquer the
       | entire known world (when the conqueror is _20 years old_ ) is
       | pretty fucking insane, let's give the kid some credit. But yeah,
       | his empire was split in six when he died. Why? He had no heir, he
       | was the king of the entire known world, and he died suddenly.
       | Conflict was bound to happen. This in no way provides any
       | evidence to this point that transportation is critical to keeping
       | an empire.
        
         | [deleted]
        
       | Quarrelsome wrote:
       | Excellent article generally but I don't think the point about
       | Napoleon was very strong and rather diminished the article as it
       | conflates the concept of military supply with Imperial
       | administration and I think the two subjects differ in practice.
       | 
       | (i.e. in another reality where Napoleon had superior temporarily
       | military supply in Russian held territories then he could have
       | conquered Russia. If that happened; whether he could hold the
       | territory for the years that follow would however be an argument
       | for this article).
        
       | golemotron wrote:
       | Our last planet, Neptune, fits neatly within one light-month. The
       | rest of the heliosphere does too, but not the Oort cloud.
       | 
       | Looks like empires are purely solar system affairs. Sci-fi
       | authors take note.
        
         | cactacea wrote:
         | Article is a little light on details with regards to why the
         | author believes this effect exists. I have to imagine that
         | their thinking is that application of force is limited to the
         | distance you can travel one month instead of anything that
         | would relate to the application of soft power (e.g.
         | communication).
         | 
         | Supplying a ground based force follows more of a square-cube
         | law. You need to feed your horses to transport your food to
         | feed your soldiers. Going further means more food for the
         | horses to carry the food for the horses to carry the food for
         | the soldiers. There is an excellent post here that explains
         | this far better than I ever could:
         | https://maximumeffort.substack.com/p/the-tyranny-of-the-wago...
         | 
         | Any limitations on space based empires, while similar, are
         | going to follow somewhat different rules depending on the tech
         | involved. Unlike horses, once you launch you don't really have
         | an opportunity to resupply a space based force going a long
         | distance without inordinate energy expenditure. I'm not
         | convinced force projection over a galaxy would be a problem for
         | a civilization capable of travel at a significant fraction of
         | the speed of light. Solving one problem (travel) necessarily
         | solves the other (distribution of force).
         | 
         | I think the bigger question is more, why bother? What possible
         | reason could a civilization have to go to war at that scale?
         | Human civilization would need to change so much to get to that
         | point that I'm not certain these are questions are explorable
         | at our place in the timeline. We'd be like Romans dreaming
         | about a better abacus.
        
       | 082349872349872 wrote:
       | My understanding is that the British Raj was several months away
       | from London?
        
         | Beltalowda wrote:
         | From what I can find: In 1858 - when the British Raj was
         | established - it took about half a year since you had to go
         | around cape the good hope. After the Suez canal opened in 1869
         | it took only ~2 months. In the following two decades expansion
         | of the train network and faster steamboats further reduced it
         | to about 2 weeks.
         | 
         | So it really depends a bit on which period you're talking about
         | as there were lots of things going on during the period, but
         | for a substantial part of the British Raj's existence you could
         | get there in a month or less.
         | 
         | I expect the "law" is not as simple as "1 month travel time",
         | but rather a calculation that factors in both travel time +
         | communication time. For much of history these two value were
         | mostly identical, but this changed with the adoption of the
         | telegraph (and later, radio).
        
           | masklinn wrote:
           | > I expect the "law" is not as simple as "1 month travel
           | time"
           | 
           | Aka the article is complete bullshit.
        
             | Beltalowda wrote:
             | No, I didn't say that. It holds up for most of history,
             | except for a fairly small window of ~50 years where
             | communication was faster than travel (after that travel was
             | fast enough that almost anywhere was less than 1 month
             | away).
        
               | ComputerGuru wrote:
               | I agree. Imagine a future where we find a way to send
               | messages at/near the speed of light intergalactically but
               | can still only travel at some fraction of it.
        
               | danenania wrote:
               | We can already send messages at the speed of light. The
               | problem is that's still way too slow for intergalactic
               | communication (the nearest galaxy is 2.5 million light
               | years away).
        
           | notahacker wrote:
           | The British Raj succeeded the East India Company, a London-
           | headquartered enterprise that had effectively ruled most of
           | India for the previous 100 years, and fought numerous wars -
           | usually successfully - in India in the century before that.
           | The Raj was actually a reaction to Indian rebels _failing_ to
           | achieve independence and more power being transferred to the
           | British Crown as a result.
        
           | eesmith wrote:
           | Here's a data point for you - Galton's Isochronic Passage
           | Chart, showing the time in days to travel from London to the
           | rest of the world, in 1881. (12 years after the Suez opened,
           | and the map shows how useful that canal was.)
           | 
           | Map at https://en.wikipedia.org/wiki/Isochrone_map linking to
           | https://en.wikipedia.org/wiki/Isochrone_map#/media/File:Isoc.
           | .. .
           | 
           | Eastern Indian is 20-30 days. Batavia is about 30 days. Perth
           | and Hong Kong are in the 30-40 day range. Sydney and most of
           | the interior of Australia is in the 40+ day range, as is New
           | Zealand's South Island.
           | 
           | "It assumes that there are favourable travel conditions and
           | that travel arrangements over land have been made in advance.
           | It assumes travelling methods of the day within a reasonable
           | cost."
           | 
           | EDIT: https://archive.org/details/friendsreviewrel06lewi/page
           | /702/... from 1853 lists routes from London to Calcutta
           | ("Friends' review; a religious, literary and miscellaneous
           | journal", p702):
           | 
           | "The distance from London to Calcutta, by the Cape of Good
           | Hope, is 15,000 miles requiring 150 days. With steam say 70
           | days." ["150 days" agrees with your "about half a year."]
           | 
           | "The distance from London to Calcutta, by Cape Horn, is
           | 21,500 miles requiring 215 days. With steam say 90 days."
           | 
           | "From Liverpool to Calcutta, by Isthmus of Panama, 14,00
           | miles requiring 140 days. Steam, say 60 days."
           | 
           | "London to Calcutta, overland route, five trans-shipments,
           | 6,000 miles, 58 days"
           | 
           | "Liverpool, New York, and Railway to San Francisco, two
           | transhipments, 12,000 miles, 35 days."
           | 
           | It's from a piece arguing for the usefulness of building a
           | railway across the US (New York to San Francisco), to shorten
           | the London/Calcutta route. That last route didn't exist until
           | 1869, the same year the Suez Canal opened.
           | 
           | EDIT #2: https://archive.org/details/sim_the-
           | lancet_january-3-june-26... has someone leaving London June
           | 1817 and arriving Calcutta 2 December 1817, so about 5 1/2
           | months. (The Lancet January 3-June 26, 1852, p384,
           | "Biographical Sketch of James Ranald Martin, Esq., F.R.S.")
           | 
           | EDIT #3: The clipper ship Jane Pirie, built 1847, could do
           | the round-trip in "eight months and a half ... the ordinary
           | time occupied over the voyage being ten to eleven months."
           | https://archive.org/details/sim_illustrated-london-
           | news_1851... /mode/2up?q=%22London+to+Calcutta%22
           | ("Illustrated London News 1851-04-05: Vol 18 Iss 477"). As I
           | understand it, clipper travel would have been fast and
           | expensive.
        
         | shagmin wrote:
         | One could argue the British augmented that by creating better
         | local institutions in the far away places.
        
         | karatinversion wrote:
         | Let alone that the Portuguese were in Brazil, and the Spanish
         | in the _Philippines_, for some 300 years
        
           | jollyllama wrote:
           | There's so many exceptions. Does the article address any of
           | these?
        
           | jameshart wrote:
           | The Philippines is a great example of how to break this rule;
           | it was almost more a colony of New Spain than of Spain.
           | 
           | Basically converting the empire into a franchise operation?
           | Or maybe a pyramid scheme? To enable it to scale out beyond
           | that range?
           | 
           | The VOC played a similar role in extending the Dutch empire's
           | reach.
        
             | notch656c wrote:
             | The Philippines has never been easy to grasp though. Even
             | now the government maintains poor control of many of their
             | thousands of islands. Colonization efforts there can be
             | profitable but are also weak. To the extent the Philippines
             | has been colonized they must generally satisfy themselves
             | to control of major ports and trade routes and naval bases.
        
         | ekam wrote:
         | British Raj is a great argument for the article, started in
         | 1858 and lasted less than a century, a blip in the historical
         | context, as power projection was a recurring problem.
        
         | readthenotes1 wrote:
         | were they ruling it or plundering it for most of that time, and
         | after they started ruling, how long did it last?
        
       | imbnwa wrote:
       | >This also helps explain for example why feudalism was so
       | prevalent in Europe during the Middle Ages. Without well-
       | maintained Roman roads, the time needed to go from one place to
       | another extended, which made it that much harder to control big
       | empires. Small, local warlords emerged. They were the ones with
       | enough money to afford a horse and armor
       | 
       | This point is another reminder for me that Game of Thrones'
       | Westeros, the Seven Kingdoms, should've collapsed the minute all
       | the dragons were lost in the Dance of Dragons, particularly the
       | North, where it takes months to get to Winterfell from King's
       | Landing. This writer[0] also noted how impossible Westeros as a
       | united entity should be along with other issues with GRRM's world
       | design.
       | 
       | Nevermind that the size of Westeros should have a _significant_
       | impact on its anthropology. This is a needlessly nerdy analysis,
       | and most are aware of GRRM 's well-known disclaimer about his
       | faults, but no one even comments on anyone having an accent in
       | Westeros, except for that of the Dornish (which is kinda sketch
       | IMO).
       | 
       | * The relative isolation of the North and the Iron Islands
       | would've seen them continue to speak and evolve the First Men's
       | language, though with far more Andalic influence than the
       | language spoken north of the Wall.
       | 
       | * Dorne would speak a spectrum that goes from the Andalic of the
       | Marches to the Andalic/Rhoynish patois most people would speak in
       | Sunspear
       | 
       | * The Sea Lords, much like the Channel Islands IRL, would've
       | continued to speak a dialect of High Valyrian that would've had a
       | strong Andalic influence and the Targaryens would've spoken this
       | dialect. Its a bit strange that the Targaryens basically just
       | stopped speaking Valyrian though where IRL it took the Normans,
       | also a dominant political minority, almost 400 years to start
       | speaking English conversationally. The royal court and the high
       | lords would all have learned to speak it.
       | 
       | * The Riverlands' dialect would be most related to the
       | Stormlands' dialect since the Storm King ruled there for 300
       | years.
       | 
       | * The Vale, also relatively isolated since its accessible over
       | land through a scant few mountain passes, like Portugal and Spain
       | IRL where Portuguese has more in common with vulgar Latin, would
       | speak the 'purest' dialect of Andalic that has more in common
       | with the Andalic that was spoken in Essos.
       | 
       | [0]https://medium.com/migration-issues/westeros-is-poorly-
       | desig...
        
         | nostrademons wrote:
         | Also the stability of the Kingdoms of Westeros is ridiculous
         | given their ages. Supposedly they were divided into the
         | Kingdoms of the North/Vale/Iron
         | Islands/Reach/Rock/Stormlands/Dorne in the Age of Heroes -
         | 10,000 years before the Targaryen conquest. 10,000 years is
         | twice as long as all of recorded human history. In that time on
         | earth, dozens of empires have risen and fallen. The center of
         | civilization moved from the Middle East to Egypt to Greece to
         | Rome to Byzantium & Arabia to western Europe to Britain to
         | North America. Independent civilizations with equal claims to
         | greatness sprung up elsewhere on the globe. Civilizations got
         | conquered, technology advanced, genocides and plagues and
         | famines happened, languages changed, and dynasties typically
         | lasted a couple hundred years, if that.
         | 
         | Meanwhile, over in Westeros, the same 7 kingdoms have been
         | ruled over the same geographic extent by the same 7 families at
         | roughly the same level of technological development for 10,000
         | years. It took outsiders with dragons to conquer them. No
         | explanation is given over how you could maintain what appear to
         | be feudal structures over a 3000+ mile continent with bronze
         | age technology.
        
       | ozim wrote:
       | It is something I read before in a book:
       | https://en.wikipedia.org/wiki/Empire_and_Communications
        
       | jfzoid wrote:
       | Chinese saying: "the mountains are high, and the Emperor is far
       | away" (Shan Gao Di Yuan )
        
         | thriftwy wrote:
         | Russian saying: be further from higher ups, closer to the
         | kitchen (podal'she ot nachal'stva, poblizhe k kukhne)
        
       | lkrubner wrote:
       | Portugal conquered Goa in 1510 -- that's more than a month of
       | travel.
       | 
       | The Netherlands conquering Java in 1619? A lot more than a month.
       | 
       | And these conquests lasted for centuries.
        
         | [deleted]
        
         | Quarrelsome wrote:
         | sure but I imagine the argument here is that the grip on power
         | of provinces so far away was considerably weak and likely to an
         | extent devolved to the local agents of the crown. And likely as
         | long as the ships with goods sailed limited questions were
         | asked and limited checks occurred.
         | 
         | I imagine that those who worked on the colonial extents of the
         | Empire were given the largest freedoms to be monstrous as long
         | as it benefitted the crown. I would even argue that the
         | cultural descendants of these agents are the same forces that
         | encourage ideas such as Brexit; hoping to return to times of
         | significantly less oversight from the home nation. As an
         | example of this internal discord between territories of
         | European empires and home states I think the abolition of
         | slavery in the 19th century was a scenario where the electorate
         | didn't align with these colonial interests to create an
         | internal discord. Agents then shifted to an evil interpretation
         | of contract law to replace slaves with indentured servants. I
         | appreciate that this might not seem immediately irrelevant but
         | I hope it might show how a discord between the competing
         | interests of the society at "home" and the society "abroad"
         | might slowly result in the "transport time" fractures this
         | article discusses as the interests of the two populations
         | diverge.
        
         | tarentel wrote:
         | I'm not sure capturing and holding an island would constitute
         | an empire.
        
           | alephnerd wrote:
           | Java is a pretty big island just saying.
        
           | dalbasal wrote:
           | what does and how do you measure its size, in a sense
           | pertinent to this thread?
        
           | TheRealPomax wrote:
           | History is though. That's empire. But hey, France took a
           | whole bunch of islands that to this day still speak french
           | and are literally "more France, outside of Europe", not
           | "colonies".
        
           | beebmam wrote:
           | Just want to be clear here: Are you claiming that Portugal
           | and the Netherlands were not empires during those time
           | periods?
           | 
           | Here's the definition of empire used by Wikipedia: 'An empire
           | is a "political unit" made up of several territories and
           | peoples, "usually created by conquest, and divided between a
           | dominant center and subordinate peripheries'
        
           | hammock wrote:
           | Britain? Sardinia?
           | 
           | Java is the world's most populous island, by the way, and was
           | roughly as populated as England in the 1600's
        
           | AnimalMuppet wrote:
           | Fine. How about New Spain? And the Philippines?
        
         | alephnerd wrote:
         | To be fair, Dutch control of Java was more on paper than it was
         | in reality. Most governance was devolved to local Rajahs who
         | paid tribute to the VOC. Actual guns on the ground control
         | across Java and most of what became Indonesia didn't really
         | happen until the late 19th century
         | 
         | Also, Goa's existence was because it was so marginal. The
         | Mughals, Marathas, and various regional kingdoms didn't care
         | enough about the Portuguese, and also it was de facto treated
         | as a factory (a free trade zone) - just like Surat was for the
         | English
        
           | FlyingSnake wrote:
           | > The Mughals, Marathas, and various regional kingdoms didn't
           | care enough about the Portuguese
           | 
           | Sorry to be that guy, but Marathas cared deeply about Goa and
           | they constantly waged wars against them and liberated most of
           | the territory by 1739. Except tiny enclaves like Daman, Diu
           | and Velha Goa most of the _Provincia do Norte_ including the
           | crown jewel of Bacaim (Vasai) was lost. Velha Goa, Anjidiva
           | etc were saved by a stroke of luck due to the arrival of
           | fresh Portuguese Armada with a new Viceroy.
           | 
           | The current boundaries of Goa were only extended later when
           | the Rajas agreed to merge with Portuguese during Maratha
           | civil war period on 1790s, however the Hindu elites retained
           | most of the autonomy like the Visconde of Pernem.
        
             | [deleted]
        
         | rsynnott wrote:
         | > The Netherlands conquering Java in 1619? A lot more than a
         | month.
         | 
         | For practical purposes this was more the VOC than the
         | Netherlands. Similar situation with British India until they
         | killed off the British East India Company; before that, well,
         | you could call it an empire, but it was really more a separate
         | country ruled by a _company_.
         | 
         | Goa is probably a better counterexample, granted.
        
           | FlyingSnake wrote:
           | > Goa is probably a better counterexample, granted.
           | 
           | Velha Goa, the territory that was with Portuguese was really
           | tiny and just contained Salsette, Tiswadi and Bardez
           | concelhos. It is not a big feat to hold on to these coastal
           | holdings given the total domination of Armadas.
        
       | somenameforme wrote:
       | It seems to me that distance would just be a correlation to the
       | real variable. If a government could keep a people 5,000 miles,
       | or even 50 million miles, away content enough to not undermine
       | them, then obviously that government could continue to rule this
       | group of people indefinitely.
       | 
       | So it seems that the real variable here is contentedness, which
       | distance correlates strongly against. The further someone is away
       | from their government, the less likely they are to feel that it's
       | "their" government or have any sort of shared "camaraderie" for
       | lack of a better word.
       | 
       | There are plenty of examples of empires having at least tentacles
       | stretched well beyond 3000 miles sustainably, even at the
       | beckoning of the colonies, as in the case of e.g. Anguilla with
       | the Brits. Yet no empire can maintain stability, regardless of
       | their size, in the face of rising discontent.
        
         | wintogreen74 wrote:
         | Discontent seems (to me) implicit in foreign rule though, the
         | degree just being a matter of with what and for how much the
         | local population is being bought off.
         | 
         | Are there any examples where an empire doesn't treat it's outer
         | reaches as second-class citizens and survives?
        
           | somenameforme wrote:
           | I'd say that discontent is implicit in _any_ sort of rule.
           | The smallest of villages will have discontent, and at
           | extremes may even splinter - a collapse of an  "empire" on
           | the micro scale. It's all a matter of _how_ discontent people
           | become. Basically I 'm arguing a tautology: when people
           | become discontent enough to fight against their rulers, they
           | will do so.
        
           | complex_exp wrote:
           | Russia. All the asian russians are very much treated as
           | second class citizens, from the top (deciding where to draft
           | mobiks from) to the bottom (a much worse case of what
           | americans today would call police brutality / bias). We have
           | to see if it survives though.
        
       | cs702 wrote:
       | The logic seems sound to me, with a few obvious caveats:
       | 
       | * The number of samples is small. There aren't a lot of empires
       | throughout history.
       | 
       | * The definition of "empire" is somewhat subjective, because
       | empire sizes exhibit a Zipf distribution, and the cutoff is
       | arbitrary.
       | 
       | * Surely there have been other factors at play besides time to
       | travel from the capital.
       | 
       | One implication is that empires that span the globe are much more
       | feasible today, thanks to modern travel, communications, and
       | surveillance technologies.
        
         | masklinn wrote:
         | > The logic seems sound to me
         | 
         | It seems less than unsound. It's barely a just-so story.
        
         | notahacker wrote:
         | The logic is fine, it's just massively overstated with the
         | clickbait headline, and travel time in a region is an
         | _endogenous_ factor which depends on where the boundaries of
         | the empire are drawn, because empires build roads, chop down
         | forests, drain swamps and make rivers navigable.
         | 
         | As the article acknowledges, travel times within the Roman
         | Empire tended to be less than a month. But they conquered land
         | regions (where possible) before they built the roads that let
         | them supply them that fast. Certainly there's nothing about
         | lowland Germany that should make it more difficult to reach
         | than Hadrian's Wall, but they effectively subdued the British
         | tribes and built roads all over that particular faraway island,
         | and didn't have as much success against the Germanic tribes who
         | inhabited desirable land closer to their capital that could
         | have been reached in a shorter time with a nice lowland road
         | from Gaul, if they'd ever been able to build it.
        
         | humanistbot wrote:
         | The "logic" or lack thereof is in trying to find a universal
         | "hidden rule" in large-scale human behavior across literally
         | all of recorded history. This is pure physics envy, and it
         | never ends well.
        
         | tgv wrote:
         | But for future interplanetary colonization, the rule would
         | become one light month. Not very far. But imagine any form of
         | communication taking years to bounce back and forth. That could
         | not be centrally governed. It might not just be travel time,
         | but it probably does correlate.
        
           | tablespoon wrote:
           | > But for future interplanetary colonization, the rule would
           | become one light month. Not very far. But imagine any form of
           | communication taking years to bounce back and forth. That
           | could not be centrally governed. It might not just be travel
           | time, but it probably does correlate.
           | 
           | The rule seems too simplistic. What's so special about 1
           | month? Is the significant value time to communicate, time to
           | move military forces, or something else?
           | 
           | For instance, for your hypothetical interplanetary empire:
           | How could a capital, with a military that can move at 1%
           | light speed, effectively rule over a colony one light month
           | away if the worst it could do for ten years is send a nasty
           | letters over radio? Having local forces isn't a good answer,
           | because one of the easier paths to rebellion is for the
           | leader(s) _those forces_ to declare independence and make
           | themselves kings.
        
             | brians wrote:
             | Well, yes. There are plenty of takes on this. The
             | "Traveller" RPG has a nice one: distributed feudal
             | confederation. There's a nominal emperor, but it's hugely
             | important that he never do _almost anything_ , because
             | "his" empire is a lifetime across.
             | 
             | Nearly the only law is that you don't impede the mail
             | system, and that you pay a small tax to support the fleet
             | that will hammer you into the ground if you impede the
             | mail.
        
             | kqr wrote:
             | You can hypothetically keep 120 military ships en route to
             | the colony at all times so that a forceful response is
             | always at most one month away.
        
           | meatyloafy wrote:
           | Anybody dreaming of Mars colonies should keep that in mind.
           | As long as the Mars colony will be dependent on supplies from
           | Earth, they will do what Earth wants. Once they are self
           | sufficient, this will change.
           | 
           | C.f. the immigration-friendly early U.S. and its "close
           | borders" and PR lottery approaches of today.
        
           | shaoonb wrote:
           | Have you read much Le Guin by any chance? This is a theme
           | I've seen in her work.
        
             | nindalf wrote:
             | Could you mention some books?
        
               | lantry wrote:
               | It's a big part of "the word for world is forest". A
               | colony on one planet has essentially become self
               | governing, until one day a ship delivers an instantaneous
               | communication device, at which point the planet is back
               | under imperial control. There's more to the story than
               | that ofc
               | 
               | There's also "The Dispossessed", where an anarchist
               | movement travels to a distant planet in order to set up
               | their own government.
        
               | ldh0011 wrote:
               | > anarchist movement > set up their own government
               | 
               | I'm pretty sure I get what you mean but I found that
               | funny.
        
         | mymythisisthis wrote:
         | It's really about trading routes. Today different regions of
         | the world specialize in different industries. You get
         | competition between people vying in the same industry and
         | between trading partners. Communication really doesn't help
         | when it comes to corporate/national power struggles. This is
         | also why so many 'brother' countries tend to fight; Ukraine and
         | Russia, Yeman and Saudi Arabia, Eritrea and Ethiopia.
        
         | pifm_guy wrote:
         | > empires that span the globe are much more feasible today
         | 
         | A lot of people would argue that ~half the world is part of the
         | US empire today...
         | 
         | In that the US has power to strongly influence/make decisions
         | in about half the world, extradite people from about half the
         | world, and enforce IP/anti drug/monetary controls in about half
         | the world.
         | 
         | And by some definitions, it might be 80% of the world.
        
       | arthurofbabylon wrote:
       | I'm wondering how to apply this in my life.
       | 
       | People -> Should the contracted teams I work with have more
       | frequent or deeper touch points? Can I make it even easier for
       | customers and strangers to contact me? Do I generally signal that
       | I'm open and willing to listen to the people in my life?
       | 
       | Places -> Is there a convenient way to get around town that I'm
       | neglecting?
       | 
       | Ideas -> How can I create rapid channels of info from more
       | distant communities or corners of the internet? What newsletters
       | should I subscribe to?
       | 
       | The idea here is that we need to manage our space - geographic,
       | social, conceptual - and that it may serve us to expand our zone
       | of access.
        
         | [deleted]
        
       | logifail wrote:
       | This is another click-baity title submission which doesn't
       | remotely match the title of the source ("How Transportation
       | Technologies Shaped Empires") :(
        
         | [deleted]
        
       | xrd wrote:
       | Interesting how geography limited empires before the advent of
       | instant communication.
       | 
       | It would be fascinating to see a comparison of the impact on
       | empires when instant communication is possible.
       | 
       | What kind of regime change is possible when you can instantly
       | spread propaganda and no longer need Paul Revere riding around
       | telling everyone the British are coming.
        
         | rcarr wrote:
         | Communication obviously plays a big part but I think time to
         | action is probably the better metric. You need to be able to
         | act quicker than your opponent, and if you can't, you need to
         | be able to absorb the damage they can inflict in the mean time
         | whilst still having enough resources to inflict more damage
         | than you sustained when you can eventually act.
        
         | krisoft wrote:
         | > before the advent of instant communication.
         | 
         | But! Instant communication is not possible. :) This sounds like
         | a nitpicking but this might become important if we spread out
         | in space: We still have the light speed limit on communication.
         | 
         | Which of course means that our communication is practically
         | instantaneous around all of earth. (at least when measured
         | against human reaction times.) But if we would spread ourselves
         | to let's say the Oort cloud you would see very serious lag in
         | communication. Not just between Earth and the cloud, but
         | between points on the Oort cloud.
         | 
         | Could the whole cloud ever be controlled by a single empire? Or
         | would it break into a Voronoi diagram of "1 light month" large
         | cells around points of interest?
        
           | swagasaurus-rex wrote:
           | Is there enough matter for a serious political faction to
           | subsist off of?
           | 
           | The total mass of the asteroid belt is calculated to be 3%
           | that of the Moon [1]
           | https://en.wikipedia.org/wiki/Asteroid_belt
           | 
           | We only use a small fraction of matter on the Earth, so maybe
           | a good sized comet can host habitation. But the solid planets
           | and moons are where humanity could thrive. The gas giants
           | have too a gravity well, we'd need some seriously advanced
           | propulsion to make it off, but there's 317x more matter on
           | Jupiter than Earth.
        
       | irrational wrote:
       | What about the sun never setting on the British Empire? Wouldn't
       | that mean the British empire was larger than 1 month of travel
       | from the capital?
        
         | jameshart wrote:
         | Why, I'd wager that, with modern Victorian transportation, a
         | man could travel all the way around the world in less than
         | eighty days. Meet me on the steps of the Reform club!
         | 
         | Phileas Fogg's example Suggests that at the height of the 'sun
         | never sets' era, nowhere should have been more than _40_ days
         | away from London. And with a significant chunk of that time
         | stuck transiting the pacific, brings the majority of the world
         | into the 30 day window for a single month.
        
           | JustLurking2022 wrote:
           | No, it suggests that there was an optimal path around the
           | world in 80 days. The geography of many regions would have
           | made them more remote than the optimal path.
        
             | PeterisP wrote:
             | The geography of those many remote regions (e.g. the
             | interior of Africa or Australia or parts of Asia) meant
             | that they were not really governed by the empires - it's
             | just that they were linked to the wider world through
             | various port cities, and _those_ were generally governed by
             | some empire and within a month of its capital, so the value
             | of their trade was captured tehre.
        
             | jameshart wrote:
             | In seriousness, the article's final thesis is literally
             | that steamships and trains and telegraphs broke the 'month'
             | rule by bringing essentially the whole world inside the one
             | month range, which is what enabled a 'sun never sets'
             | empire and then broke empires in general.
             | 
             | Around the World in 80 days is set almost exactly at that
             | inflection point.
        
         | GalenErso wrote:
         | "The regional governors now have direct control over their
         | territories. Fear will keep the local systems in line."
         | 
         | Delegation of authority seems to partially help solve the
         | problem.
        
       | soundmasterj wrote:
       | They're saying we can have the moon.
        
       | belter wrote:
       | Let me introduce the Treaty of Tordesillas...
       | 
       | https://en.wikipedia.org/wiki/Treaty_of_Tordesillas
        
       | wintogreen74 wrote:
       | A lot of counter-cases are conflating specific conquests with the
       | the overall empire. There will be exceptions (in both directions
       | of closer & further) but I think what the author is trying to do
       | is set the radius of the empire, relative to a one or a few
       | epicenters. I don't think the exact value is that important vs.
       | the logistical impacts of distance and their influence on all
       | aspects of controlling a geopolitical entity.
        
         | kgeist wrote:
         | If you take Russian Empire/USSR for example, most of the
         | territories which have been lost are much closer to Moscow
         | (Ukraine, Poland, Finland, Belarus, Georgia etc.) than the
         | territories still under Moscow control (Siberia), so at least
         | in the Russia's case, it's not about transportation at all.
        
           | swagasaurus-rex wrote:
           | Canada de facto owns a huge amount of territory. Nobody else
           | wants it.
           | 
           | Vladivostok is desireable to many powers in the region, but
           | it's also changed hands many times in recent history.
        
             | notch656c wrote:
             | What lands are de facto Canada but not de jure Canada's?
        
           | ComputerGuru wrote:
           | Siberia is kind of its own exception, though. I'd say they
           | managed to keep Siberia - for reasons solely to do with
           | Siberia - despite how bad they were at keeping the empire
           | together, relatively speaking.
        
             | thriftwy wrote:
             | It's just that Siberia is predominantly populated by ethnic
             | Russians and USSR did not succeed in growing any regional
             | identity there.
        
       | hprotagonist wrote:
       | This neatly explains Afghanistan, i think. Fundamentally
       | unnavigable for the entirety of written history!
        
         | ARandomerDude wrote:
         | The interior of Africa, too.
        
         | FlyingSnake wrote:
         | Afghanistan was part of large empires like Kushans, Graeco-
         | Bactrians, Achaemeniens, Mauryas, Mughals, etc for long
         | periods. It was also a part of the Silk Route to India through
         | Khyber pass and was the epicenter of Graeco-Buddhist art
         | centers like Bamyan and Mes Aynak. It was not un-navigable.
        
           | hprotagonist wrote:
           | Babur was probably the last man to hold the mountains with
           | any seriousness, and he only held on for about a generation.
           | 
           | My general feeling is that "We control Afghanistan" is more
           | honestly something closer to "I am the mayor of Kabul!"
        
       | charliea0 wrote:
       | I think there's an xkcd on modeling complex systems with a single
       | parameter: https://xkcd.com/793/.
       | 
       | More seriously, I think the predictive power of this hypothesis
       | is low. Clearly travel time is important to maintaining a
       | connected empire but it's probably not the limiting factor.
        
       | paxys wrote:
       | The rise and fall of empires is a _way_ more complex topic than
       | the author paints it to be in this post. Yes distance to the
       | outer reaches is an important factor, but so are a hundred
       | others. Economics, religion, trade, climate, technological
       | progress, and above all leadership - all play an important role
       | in the shaping of civilization.
        
       | badrabbit wrote:
       | This was true before the 20th century but my opinion is that
       | instant communication, payment and relatively fast weapons
       | delivery meant for over a century now this rule is no longer
       | valid. Your empire can be as big as you want it to, even expand
       | to the moon but probably not beyond. The limiting factor now is
       | the appetite for war and conquest by a population that can
       | communicate and organize efficiently to overthrow or change
       | rulers as well as interference from global nuclear powers.
        
       | miovoid wrote:
       | Does this rule works for information signal speed in general?
       | Does empire in space cannot be large than 1 month light in
       | radius?
        
         | drexlspivey wrote:
         | You can get around that by turning the empire into a federation
         | which is the case in most sci-fi novels
        
       | perihelions wrote:
       | The article mentions but doesn't discuss Mesoamerican empires. I
       | think those should have some interesting idiosyncracies. There
       | was a total absence of horses/oxes/draft animals before the
       | Columbian exchange, so transportation and notions of geographic
       | distance might have been very different.
        
       | mymythisisthis wrote:
       | I don't see this as a case of 'information speed'.
       | 
       | It's more like, who wants to wait more than 30 days for a package
       | to get delivered. Each yearly task takes specific tools and
       | ingredients, that you can't wait for.
       | 
       | There is a certain yearly rhythm, so people are on 30 day
       | schedules. 1 month of harvest in the fall (October) 1 month of
       | processing the food (November) 1 month of swapping and trading
       | food (December) 1 month of keeping animals alive in winter
       | (January) 1 month of animal husbandry (February) 1 month of
       | winter planting (March) 1 month of birthing new animals (April) 1
       | month of spring plating (May) 1 month of early harvests (June) 1
       | month of tending to planted crops (July) 1 month of travel
       | (August) 1 month of making clothing and other things (September)
        
       | dalbasal wrote:
       | I feel like there's some cherry picking going on. I mean, issues
       | with germanic tribes and inland conquests did play a role but...
       | what about upper egypt, paetrea, britannia, etc. The edge of the
       | empire was the edge of the empire... with frontier problems. Why
       | did germania fail, but not those other ones.
       | 
       | I mean size is an issue. Travel & messaging are issues. Empires
       | are very much defined by these things, etc. I just don't see
       | where the clear watershed is.
       | 
       | Early modern european empires colonized the americas, SE Asia,
       | the african coast... Those were months of treacherous sailing.
       | "Empire" in those cases meant something totally different than
       | for Rome. Rome marched in with troops and took political control.
       | Portugal & the Dutch, England and such established small colonies
       | that grew in power until they were hegemons. Sometimes just a
       | small port or town.
       | 
       | Anyway... I think Rome's limiting factor in germania and the
       | european frontier was barbarism. NW europeans didn't have
       | civilization: states, monarchies, temples, senates, roads,
       | nations. The germans didn't even know they were germans until
       | Romans told them. Rome's empire was based on assuming political
       | control over existing political institutions. It's economy was
       | dependant on this approach. Rome's African and Asian territories
       | had been civilized for Millenia. Jerusalem, Carthage, Luxor, etc.
       | Europe had no cities. How do you tax?
       | 
       | In northern europe, arabia and such Rome's empire looked like the
       | early days of early modern colonialism. Slave export & frontier
       | plantations supporting a Roman villa lifestyle for a small number
       | of colonists. Most of the natives didn't pay tax, or participate
       | in Roman life.
       | 
       | Egypt, under rome, shipped grain to the capital and enriched
       | Roman officials. In "the colonies," it worked in reverse. Rome
       | had to ship _them_ soldiers and money to keep the colony going.
        
         | [deleted]
        
         | vondur wrote:
         | Barbarism is certainly a factor in the Roman expansion into
         | Germania, but if you look at how the Romans were able to
         | colonize Gaul completely. I think originally they thought they
         | could follow the same playbook into both Germania and Britain.
         | Britain was never full pacified and required a large occupation
         | force to keep the province under control. After the defeat of
         | Varus during the reign of Augustus, I think Roman leadership
         | looked at the area using a cost/benefit analysis and decided it
         | wasn't worth the amount of money that would be needed to fully
         | pacifiy the region. The Romans should have pulled out of
         | Britain after Claudius, the invasion was a vanity project and
         | had no real value as a province.
        
           | dalbasal wrote:
           | Idk...
           | 
           | Lots of conquests were hard, but time did them. Then they put
           | down rebellions as necessary.
           | 
           | I think the difference was that there was no way for time to
           | "win" as they we used to. No palace to install governors in.
           | No temple to place Roman statues in.
           | 
           | How do twin? What do you win when you win? Rome wasn't after
           | a tax base or plantations for cash crops. They were after a
           | tax base. Most of their empire consisted of territories that
           | had all these things for yonks. They had been conquered by
           | many empires and knew the drill. Britannia and Germania did
           | not.
        
             | mjcohen wrote:
             | This is not written in English. Maybe AI?
        
           | btilly wrote:
           | "Pacified" is a bloodless word to hide a bloody reality.
           | 
           | According to Julius Caesar's own figures, when he conquered
           | Gaul he killed roughly a third, enslaved a third, and left
           | the last third under Roman rule. Thus did the future dictator
           | create the power base with which he overthrew the Republic.
           | (Though it took his nephew Octavian, better known as
           | Augustus, to make that stick.)
           | 
           | Even in modern times, autocrats seek to glorify their power
           | with titles that derive from his name. Titles like "king",
           | "kaiser" and "tsar".
           | 
           | Calgacus, as quoted by Tacitus, purportedly said of the Roman
           | Empire, "They make a desert, and call it peace." The
           | authenticity of the quote is questioned, but the description
           | is historical fact. And so I prefer calling a spade a spade,
           | and replacing "pacification" with the more accurate",
           | "conquest, genocide and oppression".
        
         | ClumsyPilot wrote:
         | you are all wrong people,
         | 
         | Roman legions were co posed of Roman citizens, they had to
         | procure their own sword and shield, and could be called up to
         | serve.
         | 
         | As the Roman empire grew, they captured many slaves and
         | territory. Wealthy romans could buy up slaves and land. They
         | accumulated large holsings farmed by slaves and could
         | outcompete ordinary romans in agricultural production.
         | 
         | This was a problem because they were bacrupting the very same
         | people who formed the legions. All the legionairs would recoeve
         | for their military success, was increasing poverty.
         | 
         | This led to decreasing quality of troops and political
         | instability
        
         | notahacker wrote:
         | > Anyway... I think Rome's limiting factor in germania and the
         | european frontier was barbarism. NW europeans didn't have
         | civilization: states, monarchies, temples, senates, roads,
         | nations. The germans didn't even know they were germans until
         | Romans told them. Rome's empire was based on assuming political
         | control over existing political institutions.
         | 
         | I think you could get a job writing excuses for Roman emperors
         | ;)
         | 
         | The Romans might have assimilated _some_ sophisticated
         | civilizations like Greece and Carthage, but outposts like
         | Britannia were nothing like that, and Romans built their own
         | roads and cities and villas to extract wealth from the land and
         | set up their own institutions everywhere they went. Germany had
         | no shortage of potential as a source of agricultural produce
         | and slaves, but what made it uneconomical compared with other
         | fringe parts is the pesky Germans kept fighting back, and in
         | particular wiped out the three remaining legions in Germania
         | after eight others sent there to pacify it had been withdrawn
         | to stave off rebellions elsewhere. (They lost a legion to
         | Boudica in Britain too, but they 'd built roads and cities
         | there by that time and had a different emperor calling the
         | shots).
        
       | amelius wrote:
       | Human travel? Or information travel?
        
         | sbaiddn wrote:
         | That's a fascinating question. I guess the answer is both. Fast
         | info gives you extra time since you don't suffer the latency to
         | send the shock troops.
        
           | kcb wrote:
           | I think it's further than that. If the drones, satellites and
           | if necessary the humans with guns that get their paycheck
           | wired from earth are already prepositioned then the latency
           | becomes minutes.
        
       | AntiRemoteWork wrote:
       | [dead]
        
       | hammock wrote:
       | The article's conclusion is validated by the deployment times of
       | US aircraft carrier groups around the world... To deploy from the
       | Pacific to the Persian Gulf is approximately one month.
       | 
       | Historical data backing that up:
       | https://qph.cf2.quoracdn.net/main-qimg-7633a527c8e2a2228fcdd...
        
       | ErikCorry wrote:
       | Interesting, but almost all the examples are from before the
       | invention of the telegraph.
        
       | blululu wrote:
       | This is taken from Caesar Marchetti's work on the invariance of
       | certain parameter, related is his work on city size:
       | 
       | http://www.cesaremarchetti.org/archive/electronic/basic_inst...
        
         | diordiderot wrote:
         | Very entertaining read
        
       | haunter wrote:
       | Case in point: Crusader Kings 2/3. Both games are insane and if
       | you say start with the Holy Roman Empire you can see how things
       | can fall apart quickly when you want to extend beyond the already
       | enourmous territory.
        
       | nathias wrote:
       | it probably depends on the tickrate of the governance
        
       | maw wrote:
       | Unrelated to the article's thesis: the use of both colors and
       | numbers in the static map of the Roman Empire is very clever and
       | I wish this technique were used more often.
       | 
       | I don't in general have trouble distinguishing colored areas when
       | they're adjacent to each other. But when they're separated from
       | each other -- as is often the case with a map and its legend --
       | it becomes a lot more difficult.
       | 
       | Using colors to show extent and numbers to match up with the
       | legend is a great solution to this problem. Take note!
        
       | uwagar wrote:
       | who wants to know this? and why?
        
       | jonplackett wrote:
       | There goes intergalactic empires then...
        
       ___________________________________________________________________
       (page generated 2023-01-06 23:00 UTC)