[HN Gopher] Godel, Escher, Bach: an in-depth explainer
       ___________________________________________________________________
        
       Godel, Escher, Bach: an in-depth explainer
        
       Author : behnamoh
       Score  : 158 points
       Date   : 2022-09-13 17:12 UTC (5 hours ago)
        
 (HTM) web link (www.alignmentforum.org)
 (TXT) w3m dump (www.alignmentforum.org)
        
       | adamnemecek wrote:
       | The underlying idea is the idea of fixed points (aka spectra,
       | diagonalizations, embedding, invariants, braids). By fixed point
       | I mean something like the "Lawvere's fixed point theorem".
       | https://ncatlab.org/nlab/show/Lawvere%27s+fixed+point+theore...
       | 
       | I have a linkdump on this https://github.com/adamnemecek/adjoint
       | 
       | I also have a discord https://discord.gg/mr9TAhpyBW
        
         | Workaccount2 wrote:
         | Maybe an ELI5 of "fixed points"?
        
           | Jtsummers wrote:
           | General definition (courtesy of the wiki): A fixed point
           | (sometimes shortened to fixpoint, also known as an invariant
           | point) is a value that does not change under a given
           | transformation.
           | 
           | So x is a fixed point of a function f if f(x) = x. This can
           | be generalized to various kinds of things in mathematics, but
           | as an algebraic example:                 f(x) = x^2
           | 
           | 1 and 0 are fixed points:                 f(1) = 1^2 = 1
           | f(0) = 0^2 = 0
           | 
           | https://en.wikipedia.org/wiki/Fixed_point_(mathematics)
        
           | adamnemecek wrote:
           | A solution of any computational problem.
        
       | dinobones wrote:
       | Am I the only one who did not find this book that interesting? I
       | studied CS so it just felt like reading my class textbooks again,
       | except with random trippy stories in between that try to shoehorn
       | theory into a poor metaphor.
       | 
       | The fundamentals of CS (strings, automata, graphs) are elementary
       | building blocks. This is by design. You can apply them to almost
       | anything. Almost everything "is a graph", or "recursion" if you
       | formulate them to be so.
        
         | vikingerik wrote:
         | Middle ground opinion here. I found roughly the first third of
         | GEB interesting. It's mind-expanding to think about self-
         | reference and recursive structure in the context of all the
         | other fields besides computer science, like natural language,
         | music, art. GEB is a fun exploration of that for the first few
         | chapters... but it doesn't get better after that, after a while
         | it just keeps doing the same things and repeating the same
         | stuff, and becomes a chore rather than fun to get through.
        
         | xiaolingxiao wrote:
         | I read it before studying cs and I thought it was fascinating
         | and made me want to study it. After studying it at the grad
         | school level I re read it and found the book somewhat pedantic.
         | It's a bit like the black swan in the regard: it package
         | advanced under grad level stem topics with colorful anecdotes
         | and musings.
        
         | climate-code wrote:
         | The point isn't that everything is recursive - the point is
         | that systems that are recursive / self-referential cause
         | breakdowns in logic (they are incomplete).
         | 
         | This is a deep philosophical insight - it rhymes with the
         | Buddhist idea of no-self - the problems that arise because we
         | hold onto a false sense of self.
        
         | scrame wrote:
         | It was a breakthrough tome when it came out, and covers a lot
         | more than truth tables.
         | 
         | Its as much a weird work of nerd art than a manual, like _whys
         | guide to ruby_.
        
       | davesque wrote:
       | I've read GEB over many years rather in the way someone would
       | read the Bible. I pick it up from time to time and enjoy chewing
       | on one or two chapters of material.
       | 
       | But I've yet to figure out if the book actually has a specific
       | thesis. I know it's all about the power of interpretation and the
       | way in which interpreting a formal system as self-referencing has
       | the effect of completely blowing up the intended design of that
       | system. But can someone sum up how this connects to consciousness
       | beyond the obvious way in which consciousness plays the role of
       | the interpreter? Or is that itself the thesis of the book? Or
       | maybe that consciousness is the originator of self-reference?
       | 
       | Bottom line is that I think the thesis can be summed up in a few
       | sentences, but apparently it takes a whole 800 page book to get
       | to the point. Would love other people's thoughts on what that
       | point is ultimately. By the way, as salty as I sound about it, I
       | love GEB. So don't get me wrong :).
        
         | mav88 wrote:
         | The central thesis of GEB is this: what is a self? From the
         | preface of the 20th anniversary edition:
         | 
         | "GEB is a very personal attempt to say how it is that animate
         | beings can come out of inanimate matter. What is a self, and
         | how can a self come out of stuff that is as selfless as a stone
         | or a puddle?"
        
           | mberning wrote:
           | It is interesting to me that the author would start at the
           | materialist assumption. Most people take it as a "given", but
           | I have softened to the idea that maybe it is not a correct or
           | complete way of viewing things.
        
         | MonkeyMalarky wrote:
         | Metamagical Themas is worth checking out for that style of
         | reading as it is a compilation of his essays. One can pick and
         | choose any to read but there's overarching themes that bring
         | them together too.
        
           | scrame wrote:
           | 100%, not just the collection of columns, but that he has
           | postscripts for it. He manahes to keep things accessible over
           | a few columns rather than the overly sprawling GEB (which
           | I've read a few times, and still revisit pieces) or his later
           | personal works, which involve a lot of personal grief in the
           | guise of discussions of cognitive studies.
        
         | sdwr wrote:
         | Haven't read it in a decade (and only once!), but I'd say its
         | about how self-reference, and roles + perspectives _are_
         | consciousness. The exception proves the rule, getting into the
         | mind-bending edge cases exposes the typical mental framing. A
         | bit like Leonardo exploring his eye muscles with a blunt pin.
         | 
         | Godel, quines, the phonograph ship of theseus stuff, Bach
         | harmonies, all the self-aware dialogues. He's looking for the
         | vital spark, the thing that makes us greater than the sum of
         | parts. But he can't capture the essence (who can?), and settles
         | for running around the outskirts.
        
         | Rygian wrote:
         | You may want to read I Am A Strange Loop, which clarifies the
         | main thesis in the lines that self-reference is a precursor of
         | consciousness iirc.
        
           | pfarrell wrote:
           | In the forward of which, Hofstadter says he could have called
           | the book, _" I" is a Strange Loop_ referring to the concept
           | of "I-ness", but he found it too clunky.
        
         | chromaton wrote:
         | Yes, the later editions have a foreword which explains what the
         | book is about: Hofstader's theory that consciousness arises
         | from self reference.
        
         | scrame wrote:
         | I think of it more as a survey of a bunch of disciplines, and
         | some hopeful hypothesis of future AI research. He writes in an
         | accessible way and touches DNA, poetry, fractals, video
         | feedback, topographical systems, just... a whole bunch of
         | things.
         | 
         | It is for sure reaching, but his core conceit is about pattern
         | recognition and emergent behavior and he throws everything he's
         | got at the wall there through the eyes of his interests because
         | he KNOWS there is something there, even if Godel could describe
         | it in a 19 page paper decades before.
         | 
         | That some of this is obvious in hindsight almost 50 years later
         | does not discredit the bizarrely singular nature of his effort,
         | maybe the same way Seinfeld seems corny now.
        
         | pvarangot wrote:
         | The book is about... should I call it golemization? the
         | emergence of a being from a summation of non-being things.
         | 
         | Few people get it like that and I think it's a problem with the
         | book. It's taken as more of a funny and poignant popular
         | science dive into some aspects of logic and computability.
         | Hofstadter expands on "I Am a Strange Loop" which I think you
         | should read if you are interested into what was his take with
         | GEB.
        
       | danbmil99 wrote:
       | An incredible piece of work. Shaped my life trajectory in many
       | ways. Introduced me to thinkers like Daniel Dennett and Stanislaw
       | Lem.
       | 
       | Every generation or so a book comes along that, in retrospect,
       | seems almost clairvoyant. This is one of those books.
        
         | pjmorris wrote:
         | I was introduced to both Dennett and Lem through 'The Mind's I:
         | Fantasies And Reflections On Self & Soul', an anthology edited
         | by Hofstadter and Dennett that I chanced upon in the university
         | library. I recognized Hofstadter from GEB. I found 'I' very
         | digestible, I admit that I still haven't finished GEB. It
         | beckons me from the bookshelf.
        
       | svat wrote:
       | IMO, to read GEB for its content would be missing the point: what
       | I think is the greatest thing about the book is that it's simply,
       | purely, Hofstadter having _fun_. The linked post says  "GEB is
       | _really_ idiosyncratic in a way no one can imitate ", but I'd put
       | it as: it's a deeply personal book. The author's personality
       | shines through in a way I had not encountered before in a
       | mathematics text, and so the book was a revelation for me.
       | 
       | Hofstadter's actual thesis/intent with the book, and what he has
       | to say about Godel numbering (note: the book goes over Godel's
       | theorem and some implications, but Hofstadter's real interest is
       | less in Godel's theorem than in the proof technique--Godel
       | numbering--that Godel used, because he is tickled by the self-
       | reference), or Escher or Bach for that matter, are not really
       | what make the book most worthwhile. What matters is the marriage
       | of form and content, the perfect puns that seem to be set up
       | several hundred pages apart, the way you'd be reading another
       | dialogue before suddenly realizing that the lines are spelling
       | out an acrostic, the satisfaction of things working themselves
       | out perfectly (even the puns) (a feeling similar to the
       | satisfying tying-together of the plots of certain novels, some of
       | Wodehouse's included), and so on.
       | 
       | Very few authors can write about technical topics in a way their
       | personality shines through. (Knuth is another IMO, except with
       | the personality staying in second place to the technical content,
       | while with Hofstadter it's the other way around!)
       | 
       | (Or non-technical writing: did you know about Hofstadter's
       | translation of _Eugene Onegin_? He learnt Russian just to be able
       | to read and translate that poem (see
       | https://archive.nytimes.com/www.nytimes.com/books/97/07/20/r...
       | https://www.tralalit.de/en/2018/07/25/a-tale-of-two-or-so-tr...
       | https://www.york.ac.uk/depts/maths/histstat/pml1/onegin/ for the
       | story, and
       | https://archive.nytimes.com/www.nytimes.com/books/99/09/12/r...
       | for the very negative NYT review) and the result is amazing for
       | exactly the reasons the reviewer complains about: yes it can't
       | stand alone and it's best read alongside a "real" translation say
       | Falen's, but throughout you can see Hofstadter having fun with
       | his word games, and somehow his personality shines through even
       | in just the way he's choosing to translate Pushkin; it's so
       | amazing how he manages to have so many things just work out.
       | "Till his creditors cast their nyet's")
        
         | jll29 wrote:
         | Well said.
         | 
         | The original review post focuses on Godel, but you cannot truly
         | review GEB without Escher and Bach. Yes, self-referentiality is
         | a key theme of Hofstadter, but also recursion, symmetry and the
         | foreground/background ambiguity in visual arts and music, after
         | all the whole book is essentially a recursive, self-similiar
         | poem (alternating chapters with prose and dialogues, one
         | dialogue has palindrome form).
         | 
         | Despite that I disagree about his fundamental view of AI,
         | namely that AI is an emergent epiphenomenon, it is still the
         | most-read and most-appreciated book ever for me. I read it
         | first in German and then in English, and given the playfulness
         | with form versus function/content, it is also the best-
         | translated work that I have ever encountered. I'm grateful that
         | I bought it when I was sixteen, simply because it was mentioned
         | in a computer magazine and in a completely different context,
         | so I got curious. I know many people that deeply appreciate it,
         | or that went into AI careers because of it.
        
         | patcon wrote:
         | I've never read it, but I can tell it has something deep to
         | say, due to have channeling the knowledge learnings into the
         | production of the knowledge object has brought so much joy and
         | intrigue and life-changing epiphanies to readers. I mean, there
         | must be some deep truth to the content, if the execution of
         | said content (in the form of the book) is so touching to so
         | many people... :)
        
       | craggyjaggy wrote:
       | Maybe one day I'll try reading it again and actually finish it,
       | but so far I couldn't do it. Everything is fascinating and mind
       | blowing don't get me wrong, but I feel like there is always this
       | weird pretentious atmosphere going on. I don't know how to
       | describe it, but by the end of the first half reading GEB was not
       | fun anymore.
        
         | mejutoco wrote:
         | You can skip the alternating socratic parts and it is much
         | lighter :P I think Zen and the art of motorcycle repair has a
         | similar structure with Socratic dialogs interspersed.
        
         | scrame wrote:
         | It is for sure pretentious, he's a cloistered academic classic
         | music nerd that appreciates art exclusively through rigid
         | structure. He's also aware of that and tries to explore that.
         | 
         | The second half is weird too, because it describes the academic
         | work he does in the future, but is a stab in the dark compared
         | to the documentarian aspect of the first half.
         | 
         | Think of it like forming a hypothesis:
         | 
         | GEB: This is what we can see.
         | 
         | EGB: This is what I think it means.
        
         | andybak wrote:
         | I've never understood why people think it's pretentious. It
         | joyous and innocent. It's someone laying out the shiny baubles
         | they love and inviting anyone passing to take a look.
        
       | fredgrott wrote:
       | The real neat thing is if you compare the full series from the
       | author of GEB to the famous math person named Penrose as they
       | both cover different sides of the same argument and at times
       | beautiful math as well.
       | 
       | Short take...our reality is a mesh between two different math
       | desc, one is micro and one is not. The only problem is we still
       | have no idea how nature bridges between those two different
       | mathematic systems and that leads us down some very interesting
       | rabbit holes:
       | 
       | 1. String Theory and multiple worlds, except they are on micro
       | basis, i.e. you cannot see them even with an electron microscope.
       | 
       | 2. Tim travel at electron part level but not atom level.
       | 
       | among other interesting things.
        
       | spindle wrote:
       | There was a very good (charitable) takedown of some of the
       | content of GEB referenced on Hacker News a few months ago, but I
       | can't find it :-( Can anyone help please?
        
       | jstanley wrote:
       | > Godel's Incompleteness Theorem: any sufficiently rich formal
       | system, together with an interpretation, has strings which are
       | true but unprovable.
       | 
       | This is only half of it!
       | 
       | Godel's Incompleteness Theorem states that any sufficiently rich
       | formal system, together with an interpretation, _either_ has
       | strings which are true but unprovable _or_ has strings which are
       | provable but untrue. Either is possible! In practice people
       | prefer to have true things that can 't be proven rather than
       | provable things that are untrue. But either is possible.
        
         | slowhand09 wrote:
         | Careful lest you be shot with a crab cannon.
        
         | SkyBelow wrote:
         | Is there a distinction between saying a system has something
         | that is provable and untrue and saying the system is self
         | contradictory (and the more generalized layman interpretation
         | that the system is wrong).
        
           | layer8 wrote:
           | See https://en.wikipedia.org/wiki/Consistency. Under the
           | syntactic definition of consistency, a self-contradiction
           | simply means that a particular statement and its logical
           | negation can both be proved in the system. That doesn't say
           | anything about the truth of the statement.
        
         | red_trumpet wrote:
         | How can a statement that is unprovable be true?
         | 
         | I always had the impression that unprovable means you could add
         | either the statement or its negation as an axiom, and both
         | resulting systems are as consistent as the system you started
         | with
        
           | gerdesj wrote:
           | "This statement is false".
           | 
           | GEB is a marvellous work that is accessible to anyone with
           | reasonably good school grade maths. I chanced upon it by
           | accident in the school library one day and was hooked after a
           | few pages.
           | 
           | Anyway the crux of the matter is that you can very carefully
           | construct a statement about a system that can't be either
           | proven or disproven by that system! I don't have anything
           | like the formal knowledge to really get to grips with it and
           | the discussions on infinities and so on are pretty mind
           | blowing. However, you feel that DH is imparting glimpses into
           | the sheer beauty of the ideas he covers.
           | 
           | Wait 'til you discover what ricercar and quining is all about
           | - bloody lovely. Just read it but take your time. There is
           | something in there for everyone. You often get told by clever
           | people about the links between maths, music and art. Mr H
           | easily gives the best argument I've ever seen that attests to
           | that being true, whilst giving your brain a right good
           | kicking.
           | 
           | There was a Dutchman, a German and an Austrian who walked
           | into a book ...
        
             | alimov wrote:
             | Read it over the course of a couple months during my
             | commute, my back hurt but as you said it was marvelous.
        
             | Kranar wrote:
             | >"This statement is false".
             | 
             | Close but not quite as that's an inconsistent statement.
             | 
             | "This statement is unprovable." is the approach Godel takes
             | and eliminates the inconsistency. Either that statement is
             | true, in which case it's unprovable, or it's false in which
             | case there exists a proof of a false statement.
        
           | scrame wrote:
           | The caveat is that it's a rule of _formal systems_. Any
           | formal system that can represent multiplication can be shown
           | to have unreachable truths or provable falsities.
        
           | Twisol wrote:
           | Good question! In this context, we're relating a system of
           | proofs to the properties of a desired model. If you start
           | from a sufficiently expressive model and try to design a
           | proof system where valid proofs correspond to true
           | properties, then you will either miss some properties (an
           | unproveable truth) or you will have too many proofs
           | (proveable falsehoods).
           | 
           | Without biasing for a particular model, we could simply say
           | that every sufficiently expressive proof system admits either
           | zero models or more than one model.
        
           | fao_ wrote:
           | Without a telescope I can't prove to you that andromeda is a
           | galaxy, but it is.
        
           | pvarangot wrote:
           | So "famous" undecidable statements, which is what you
           | mention, are an example of statements that strongly
           | opinionated people believe enough that are probably true but
           | unprovable. You are probably familiar with the Continuum
           | Hypothesis or the Axiom of Choice, the latter being so
           | "probably true" in the model that the axioms for set theory
           | try to capture that it's usually added as another axiom.
           | 
           | Kruskal's tree theorem is a more interesting example, you
           | should look into that. You can prove it undecidable, so you
           | can add either it or it's negation like you say, in Peano's
           | arithmetic, but you can prove it ZFC or I think even less
           | expressive axiomatic systems for set theory.
        
           | shagie wrote:
           | Veritasium - Math's Fundamental Flaw
           | https://youtu.be/HeQX2HjkcNo
           | 
           | At 13:46 it gets into the "is there a way to prove every
           | complete statement?" and furthermore goes into the Godel math
           | for "there is no proof for the statement with Godel number g"
           | where that statement itself has a number "g".
           | 
           | The entire video is a good watch though.
           | 
           | And the related problem is that with Godel we don't know if
           | math is consistent either.
        
           | mreid wrote:
           | It might be easiest to give a sense of what "unprovable but
           | true" means by way of an imagined example.
           | 
           | Goldbach's conjecture is that "every even number bigger than
           | 2 is the sum of exactly two prime numbers", so 4 = 2 + 2, 6 =
           | 3 + 3, 8 = 5 + 3, etc.
           | 
           | For this statement to be *true* it just means that every even
           | number there must exist two primes that add to that number.
           | This is a statement about infinitely many integers.
           | 
           | A *proof* of Goldbach's conjecture consists of a finite
           | number of formal reasoning steps that start with some axioms
           | and end up at the statement of the result.
           | 
           | To this day, it seems as though Goldbach's conjecture is
           | true. It holds for every number we've been able to test.
           | However, no one has proved it is true or false yet (or proved
           | that it is unprovable).
           | 
           | The proof of Godel's result's involves very carefully
           | formalizing what statements and proofs mean so that they can
           | be encoded as statements about arithmetic. He then shows
           | there is a statement with encoding G that says "The statement
           | with encoding G cannot be proved" - if it is true, then it
           | cannot be proved.
           | 
           | It's kind of confusing at first, but there is an easier way
           | to get an intuition why there might be true statements that
           | cannot be proved. Think of each statement about the natural
           | numbers as a subset where each number in the subset makes the
           | statement true. There are uncountably many subsets of the
           | natural numbers (by Cantor's diagonalization argument).
           | Proofs are finite chains of finite statements so there are
           | only countably infinitely many of these. Therefore there must
           | be subsets/statements that are true that do not have a
           | matching proof.
           | 
           | The approach that Godel's proof takes is not too different to
           | the above argument - it is essentially a diagonalization
           | argument - the complexity is in making the encoding of
           | statements are numbers very precise.
        
           | bedman12345 wrote:
           | True, but if you add too many axioms, the resulting set of
           | axioms will not be computable anymore. If you allow your set
           | of axioms to not be computable you can of course just use the
           | set of statements that are true for whatever model of the
           | natural numbers you have in mind. The whole point is that
           | it's not possible to write down any sensible definition of
           | what natural numbers are supposed to be.
        
           | black_knight wrote:
           | > How can a statement that is unprovable be true?
           | 
           | If you are a platonist and believe in some preferred model
           | where every statement is decided this makes perfect sense.
           | For the rest of us, this just means that in a sufficiently
           | complex system there will be undecided statements. Which is
           | not such a big surprise - but a rather awesome technical
           | exercise!
        
           | x3n0ph3n3 wrote:
           | Because as soon as you have a system that includes that new
           | axiom, _new_ true statements can be created that are not
           | provable. It's true for every formal system with any finite
           | number of axioms.
        
       | mtreis86 wrote:
       | I wonder how experienced the author of GEB is with psychedelics,
       | that book always felt fairly trippy to me.
        
         | mistrial9 wrote:
         | commitment to the material in that depth is not the product of
         | drugs
        
           | widowlark wrote:
           | Thank you so much for saying this, I find this misconception
           | deeply insulting
        
             | mxkopy wrote:
             | It's not an insult. Psychedelics can profoundly change how
             | someone perceives things. GEB has that sort profound shift
             | in POV that many would associate with psychedelics.
        
               | widowlark wrote:
               | The insult is the implication that thinking like this is
               | somehow due to use of and exposure to psychedelics. Maybe
               | some people need assistance in thinking deeply,
               | Hofstadter certainly is not one of them.
        
               | mxkopy wrote:
               | Do you think that you feel better than others for not
               | taking drugs, and that this superiority is assailed when
               | people who take drugs find common ground with one of your
               | favorite thinkers? Because that's the only explanation I
               | can think of for this blatant assholeishness and
               | gatekeeping.
               | 
               | Hofstadter doesn't own thinking about consciousness,
               | thinking deeply, or thinking philosophically. As a matter
               | of fact these sorts of things, to many people - many more
               | than who have even heard of Hofstadter - associate them
               | with psychedelics. So it's not unreasonable, it's not an
               | insult, to think Hofstadter going pretty deeply into
               | questions of meaning, putting mind-bending Escher works
               | in his book, referring to the person that wrote GEB as
               | different from Hofstadter himself, etc... is psychedelic.
               | These are things that most people find eccentric, and
               | what psychedelic users find psychedelic.
               | 
               | The only way I could find insult in such comparisons is
               | if I felt psychedelics themselves were morally inferior
               | or insulting. I would examine that.
        
               | widowlark wrote:
               | Oh, to be clear it has nothing to do with morality.
               | Similar to someone elses comment above, having the
               | experience of thinking you can salsa dance while drunk
               | and actually being able to salsa dance are very
               | different. In the same way, Someone might gain some
               | understanding of H's thinking by taking psychedelics, but
               | that does not lead to the same understanding as actually
               | processing, imagining and writing the material does. I
               | also think you might be devolving a little into flamebait
               | here, as it seems you have taken my statements personally
               | but they were not directed in any way at you.
        
               | Brusco_RF wrote:
               | Getting hit in the head can also change how someone
               | perceives things. I think the above commenter was
               | expressing frustration with the popular notion that
               | taking drugs is some sort of shortcut to understanding
               | consciousness, dynamic systems, etc
        
               | andybak wrote:
               | "Shortcut" is overstating it. It can steer one's thinking
               | in a direction that makes those topics seem more relevant
               | or interesting. This in itself can be very valuable.
               | 
               | > Getting hit on the head
               | 
               | Well - there _are_ recorded cases of brain damage
               | unlocking abilities and aptitudes (albeit with great
               | rarity). So probably not recommended.
               | 
               | But rest assured, psychedelics are less painful, cause
               | less damage and have a higher probability of beneficial
               | effects.
        
               | mxkopy wrote:
               | Note that I said "profound change" not "arbitrary
               | change". What a faithful argument you've blessed us with.
               | 
               | If you think drinking alcohol or taking cocaine has the
               | same mental effects as psychedelics, then, I guess all I
               | can say is don't talk about what you don't know.
        
             | patcon wrote:
             | (upvoted!) can you say more about this sensibility of
             | yours? I'm genuinely intrigued, as I haven't heard a take
             | like that before :)
             | 
             | At risk of asking a leading question: is it some idea that
             | deep truth should come from reason rather than the noise
             | and chaos of psychedelics? (I don't do them myself, but
             | hold them in very high regard as a force in the world)
        
               | widowlark wrote:
               | I have no problems with psychedelics or their use. I took
               | issue with the implication that they are needed in order
               | to think in the way Hofstadter does - it's kind of like
               | asking what flippers Michael Phelps uses when he swims in
               | the olympics.
        
               | mtreis86 wrote:
               | I didn't mean to imply that and certainly don't think it
               | is required. My question had little to do with the
               | content and much more to do with the style, and the
               | author's intended effects upon the reader.
        
               | widowlark wrote:
               | Thanks for clarifying!
        
               | Brusco_RF wrote:
               | Your question is loaded in a different way than you might
               | have anticipated, it presupposes that truth DOES come
               | from psychedelics as well as from reason.
               | 
               | It's true that many people feel a deep connection to and
               | understanding of consciousness during a psychedelics
               | trip. Did they actually gain any knowledge about how
               | their own brains work in the same way that a
               | neuroscientist or ML expert might understand it? I
               | contend that they did not, even if they feel that they
               | did.
               | 
               | In a similar way a drunk might suddenly feel that he has
               | the ability to dance. That's hardly a replacement for
               | salsa classes.
               | 
               | Of course there are exceptions. Many brilliant people
               | take psychedelics and credit them with breakthroughs in
               | their fields, that can't be ignored. But you'll notice
               | that its always _in their field_, ie they were already
               | thinking about a problem and psychedelics offered them a
               | new perspective.
        
           | ozay wrote:
           | He doesn't say it was written while high. He is wondering if
           | H knew the effects of psychedelics and maybe tried to
           | replicate the feeling in the reader.
        
           | Judgmentality wrote:
           | https://www.smbc-comics.com/index.php?db=comics&id=2245
           | 
           | There are several famous mathematicians known for their avid
           | use of amphetamines.
        
             | chrisweekly wrote:
             | Not to mention the profound impact of LSD on the founders
             | of modern computing.
        
             | ozay wrote:
             | Amphetamines aren't psychedelics. Like nicotine or caffeine
             | they increase performance.
        
             | cdot2 wrote:
             | And there are many who arent. I doubt there's a statistical
             | corollation.
        
               | Judgmentality wrote:
               | It just shows you can be an avid drug user and still make
               | enormous contributions to STEM. It only takes n=1 to
               | provide a counterexample to an absolute like "drugs never
               | produce anything substantial."
        
               | Brusco_RF wrote:
               | That's quite the strawman, I don't know anyone who says
               | that. And if they did I would ask them if they drank
               | coffee or if they were aware that a good chunk of young
               | professionals are on ADHD medication
        
               | Judgmentality wrote:
               | > commitment to the material in that depth is not the
               | product of drugs
               | 
               | You think this is saying drugs sometimes lead to
               | commitment? It sure reads like an absolute statement to
               | me.
        
               | Brusco_RF wrote:
               | Yes that is an absolute statement (and maybe an incorrect
               | one!) but it's scope is psychedelics in relation to GEB,
               | not all possible drugs in all possible situations
        
       | thanatos519 wrote:
       | Why read this when GEB is its own in-depth explainer?
        
         | quickthrower2 wrote:
         | So is XKCD but it has the explainer site / wiki.
        
         | karaterobot wrote:
         | For one thing, I read GEB and found it difficult to follow. No
         | doubt there is more in GEB than in this article, but without
         | this less lengthy summary I couldn't get at it, life and
         | attention being what they are. If I returned to the book now, I
         | bet I'd understand more of what was already in it.
        
         | scrame wrote:
         | One word: double-acrostic.
        
       | kenjackson wrote:
       | Is there a good book that is similar in spirit, but doesn't
       | require the maturity of GEB? I know an 8th grader that would be a
       | great target, but I don't know if they have the
       | mathematical/logical maturity to get through it.
        
         | pseudosudoer wrote:
         | While I'm not sure it requires "less maturity", DH released a
         | subsequent book titled "I am a strange loop" which is an
         | attempt to condense his ideas from GEB.
        
         | abecedarius wrote:
         | Try Raymond Smullyan. He has books at a range of levels of
         | accessibility; I'm not sure if there's anything great for your
         | 8th grader, but I remember first getting into _The Lady or the
         | Tiger?_ as a teen.
        
         | Sharlin wrote:
         | _Sophie 's World_, which is about the history of Western
         | philosophy (well, at least on one level. On another level, it's
         | a story about a girl who starts to receive mysterious letters).
        
         | squeaky-clean wrote:
         | It depends on what you mean by "a similar spirit" I suppose.
         | One thing Hofstadter didn't like about GEB was he felt too many
         | people didn't see his central theme among the many other ideas
         | there.
         | 
         | His 2007 book, "I Am A Strange Loop" is a bit of an answer to
         | this. It's mostly the same ideas in GEB about the self and
         | strange loops, but without all the meandering and interludes.
         | It's been a while but I remember it being less logic/mathy than
         | GEB. I did enjoy it.
         | 
         | But the meandering and the interludes are part of the enjoyment
         | of GEB. So if you're looking for another book to capture that
         | spirit of GEB, I'm drawing a blank, hopefully someone else
         | knows one.
         | 
         | Barely related recommendation, but I remember reading "A Brief
         | History of Time" around that age. Very doable for a young teen
         | if they have a passion for that sort of topic.
        
         | gsliepen wrote:
         | I read the book for the first time at that age, and I
         | definitely enjoyed it. While I knew some things were over my
         | head, a lot of concepts are actually explained well enough that
         | a 14 year old can grasp it, and the dialogues are a lot of fun.
        
         | stinkytaco wrote:
         | Zen and the Art of Motorcycle Maintenance comes to mind
         | immediately. It works on several levels and is very accessible
         | as a result. If you wanted to stray from the spirit of GEB into
         | narrative prose, there are a number of books I could recommend,
         | especially in science fiction.
        
           | Workaccount2 wrote:
           | ZMM is a great philosophy intro book. It's captivating and
           | will get you in that "deep thinking mode" while never getting
           | too overly dense. The actual core philosophy is a bit meh,
           | but it really doesn't matter since the book is loaded with
           | general good insight.
           | 
           | +1
        
             | phist_mcgee wrote:
             | I liked the book, but didn't like Pirsig in it. I felt
             | sorry for him for sure, but i'm not sure I could understand
             | him and his reasoning for things.
        
         | hypertexthero wrote:
         | Think on These Things by Jiddu Krishnamurti
        
       | JasonFruit wrote:
       | Every socially awkward person who obsesses about their intellect
       | is an in-depth explainer of Goedel, Escher, Bach. It's a fun
       | read, and clever enough, but the relation between the work of the
       | three is pretty shallow, and if you understand only what the book
       | contains, you haven't gotten very deep into their valuable work.
       | The book is more an act of self-indulgence on the author's part,
       | or at best a tribute to the brilliance of his subjects, than a
       | profound intellectual achievement in itself.
        
       | 2-718-281-828 wrote:
       | is here somebody who also got the impression that the book is
       | somewhat overrated?
        
       | tootallgavin wrote:
       | G.E.B is hegelian philosophy without one mention to Hegel and
       | more mechanic than organic
       | 
       | Anyone read the Phenomenology of Spirit and notice the same
       | ideas?
        
         | scrame wrote:
         | I love this comment.
        
         | svnt wrote:
         | The ideas and what a modern reading brings to them can be
         | difficult to disentangle. A more charitable take might be that
         | because emergence is fractal that there are uncountable ways
         | not involving Hegel to arrive at and express a similar
         | underlying idea.
        
       | nathias wrote:
       | GEB is one of the best works of modern philosophy, I don't think
       | the reviewer gets the point, the story of formal systems and the
       | structures that determine them are used as an analog for other
       | systems that aren't formal to try and shed light on the process
       | of ontological emergence of intelligence. If you are at least a
       | bit interested in philosophy and computation, you should read GEB
       | at least once.
        
       | KhoomeiK wrote:
       | I almost upvoted and then noticed it links to the AI Alignment
       | Forum. Even a broken clock...
        
       | Lwepz wrote:
       | For those interested, here is a talk by Gemma De La Cuevas that
       | tackles those fascinating tangled hierarchies:
       | https://www.youtube.com/watch?v=0Q2gF1PImZw
        
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