[HN Gopher] Average adult will spend 34 years of their life star...
       ___________________________________________________________________
        
       Average adult will spend 34 years of their life staring at screens
        
       Author : praveenscience
       Score  : 292 points
       Date   : 2020-05-20 15:26 UTC (7 hours ago)
        
 (HTM) web link (www.studyfinds.org)
 (TXT) w3m dump (www.studyfinds.org)
        
       | nbj914 wrote:
       | seems low
        
       | martindbp wrote:
       | Well, personally I don't sit staring at a screen, I watch movies,
       | play games, talk to people, build stuff and learn new things. You
       | wouldn't say reading a book is "staring at paper" would you?
        
         | jccc wrote:
         | This is an excellent point (sincerely), but in addition there
         | is quite a bit of difference in what is required of a reader
         | "staring at paper" vs. many of the couch potatoes staring at
         | their various screens.
         | 
         | Probably HN is packed with better than average active users of
         | screens than the general population.
        
         | throwaway_USD wrote:
         | >You wouldn't say reading a book is "staring at paper" would
         | you?
         | 
         | Actually there is a colloquialism for that since the early
         | 1900's: "Nose in a book"
         | 
         | To your point no one actually has their nose in the book.
        
         | coldtea wrote:
         | > _You wouldn 't say reading a book is "staring at paper" would
         | you?_
         | 
         | Well, ultimately, it is...
        
           | martindbp wrote:
           | Of course, but nobody ever says this. Except when reading was
           | a new thing.
        
             | coldtea wrote:
             | Mostly because nobody (statistically) spends too much time
             | reading books. And because books have (on average) more
             | substantial content than social websites and other such
             | uses of time, so that's a better tradeoff.
             | 
             | That said, some people can (and do, more so in the past)
             | over-read, to the detriment of their social life or even to
             | their health...
        
         | filoleg wrote:
         | Fully in agreement with your take on this. One small
         | clarification, however.
         | 
         | >You wouldn't say reading a book is "staring at paper" would
         | you?
         | 
         | In our day and age, you wouldn't. But this was definitely a
         | thing in 1800s (regarding books) and in early 1900s (regarding
         | newspapers). Using very similar excuses to rant about those, as
         | the excuses being used today regarding screens too.
         | 
         | And even earlier, in Ancient Greece, tons of prolific
         | philosophers were strongly opposed to writing and books as a
         | concept, as they believed that writing things down and learning
         | from that (as opposed to oral learning) was eroding abilities
         | that relied on memory (which parallels really well with people
         | currently complaining about search engines removing the hard
         | need for memorizing things).
         | 
         | However, knowing this only makes your original point stronger.
        
         | osrec wrote:
         | Funnily enough, I remember talking to a historian who said
         | centuries ago, reading a book was considered "mindless
         | entertainment", much as we think about our smartphones now.
         | Eventually, reading evolved into being considered something
         | generally "smart" people did.
        
           | rrrrrrrrrrrryan wrote:
           | I hung out with some Vietnamese Zen buddhist monks on a
           | monastery for a few days, and I was surprised to find that
           | they viewed most fictional novels as mindless entertainment
           | as well. Books with obvious educational value and religious
           | texts were fine of course, but spending a few hours reading a
           | novel would be lumped into the same general category as
           | spending a few hours binging a Netflix show, so they did it
           | sparingly.
        
           | logosmonkey wrote:
           | Many were quite opposed to books and have been throughout
           | history. This is a fun read
           | https://www.historytoday.com/archive/reading-bad-your-health
        
           | hackmiester wrote:
           | I'd also love to read more about this, similar to the sibling
           | comment from carierx1, who appears to be hellbanned.
        
             | yesenadam wrote:
             | > carierx1, who appears to be hellbanned.
             | 
             | If you read their 1 page comment history, there's dang
             | explaining "We've banned this account." and why.
        
           | carierx1 wrote:
           | I'd love to read up more on that! Any links to literature on
           | the topic?
        
         | Andhurati wrote:
         | Do books do the same damage to your eyes as screens?
        
           | pintxo wrote:
           | probably yes.
           | 
           | At least with [1] tpart of the problem is (very simplified)
           | focusing too long on objects too near (book, screen, ...)
           | 
           | [1] https://en.wikipedia.org/wiki/Near-sightedness
        
             | rrrrrrrrrrrryan wrote:
             | There's always been a strong correlation between near-
             | sightedness and reading books or looking at screens in
             | childhood and early adulthood, and it was assumed for a
             | long time that it was because of what you described
             | (focusing on objects too near), but the latest research
             | suggests something much more interesting is happening.
             | 
             | Children who spend a couple hours per day outside have
             | extremely low rates of near-sightedness, so they think
             | there's something about the eyes being exposed to direct
             | sunlight that's necessary for them to grow properly.
        
           | ModernMech wrote:
           | Does that matter? Running damages your knees. Playing tennis
           | damages your elbow. Throwing a ball damages your shoulder. I
           | do the thing I love while staring at the screen. If it
           | damages my eyes that's the price I pay. I'm not going to stop
           | doing it.
        
           | squeaky-clean wrote:
           | If you believe my parents then all the years of reading books
           | at night with almost no ambient light would have destroyed my
           | eyes.
        
           | SpicyLemonZest wrote:
           | Probably? It's not like screens shoot death rays. It seems
           | very likely that looking closely at patterns within a
           | rectangle has the same effects whether it's made of paper or
           | electronics.
        
             | ping_pong wrote:
             | CRTs used to emit X-rays, so they actually did shoot death
             | rays.
        
               | jayd16 wrote:
               | Any ray is a death ray given sufficient dosage.
        
               | SketchySeaBeast wrote:
               | And that was the day the Care Bears let their stares full
               | power be known.
        
             | outworlder wrote:
             | They are backlit though, that's a big difference. Not sure
             | if any issues would be caused by this.
        
               | sokoloff wrote:
               | Is it a big difference? If you take the reverse of ray
               | tracing, why would a light beam of given intensity and
               | wavelength act differently on my retina because it was
               | directly transmitted vs reflected?
        
               | SpicyLemonZest wrote:
               | Backlit screens are brighter than a book under typical
               | indoor lighting conditions. (Although this doesn't really
               | support the original point, because the canonical
               | alternative of going outside is much brighter than
               | anything you do indoors.)
        
             | TLightful wrote:
             | Depends which game you're playing.
        
           | sethammons wrote:
           | do screen damage your eyes?
        
           | givehimagun wrote:
           | Can you provide evidence of where screens cause damage to
           | eyes? My ophthalmologist shared with me that there is general
           | irritation but we haven't been able to prove that screen
           | times degrade eye sight over time.
        
             | snazz wrote:
             | Staring at anything too close to your eyes for a long
             | period of time isn't good for them. If you are taking
             | appropriate breaks, my understanding is that screen time is
             | harmless.
        
               | vzidex wrote:
               | I've got the same understanding - I asked my
               | ophthalmologist about it as well because my vision is
               | already quite bad and I'm a computer engineer.
               | 
               | For breaks, she recommended the "20/20/20 rule" - focus
               | your eyes on something at least 20 feet away, for 20
               | seconds, every 20 minutes of screen usage.
        
               | snazz wrote:
               | Yes, I've gotten that recommendation as well. Apparently
               | more natural light exposure may also decrease the risk
               | for nearsightedness. Having a window near my computer
               | monitor makes it easy to remember to look outside
               | whenever I'm not actively looking at the screen.
        
           | SketchySeaBeast wrote:
           | Do screens do damage to your eyes? The article lists some
           | side effects, but I wouldn't consider that any sort of eye
           | damage, and it's certainly not permanent.
        
           | thisiszilff wrote:
           | Hey, do you have specific examples of the damage you're
           | concerned about?
           | 
           | I've been reading up about this a lot as it is something that
           | concerns me, but so far most of what I've says that longterm
           | damage is mitigated by taking regular eye breaks (ie,
           | starting at something 20+ feet away every 20 minutes for 20
           | seconds) & getting enough sleep (giving the eyes time to
           | properly rest). Are these mitigation strategies insufficient?
        
             | [deleted]
        
           | geebee wrote:
           | No idea, but I'm not sure it's material to whether "staring
           | at books" is a good description of reading.
        
           | olodus wrote:
           | Is that really supported by empirical trials? A short search
           | online seems to point to that being somewhat disputed. I'm
           | all for contradictory evidence though if you have some I
           | missed.
           | 
           | Yeah sure a screen is emitting light which maybe makes it
           | worse for the eyes to look at in some ways and situations
           | than a paper page, but "looking at light" is almost an
           | oxymoron - isn't that what eyes do?
        
             | groby_b wrote:
             | Eyes usually look at diffusely reflected light, which has a
             | different impact than direct light.
             | 
             | A white reflective surface (whiteboard) in direct sunlight
             | is 1.6cd/cm^2. Consumer monitors are ~300cd/cm^2
             | 
             | (I'm not sure how much bearing this actually has on eye
             | health, this is just to illustrate how looking at a monitor
             | and at a piece of paper is _significantly_ different)
        
               | gowld wrote:
               | cd/m^2, not cd/cm^2
               | 
               | I don't understand. Monitors are intended to be set to
               | the same brightness as the ambient environment.
               | 300cd/cm^2 is max, not average.
               | 
               | Of course shining a monitor in your face at maximum
               | brightness is bad, just like staring at a light bulb all
               | day is bad.
        
               | TremendousJudge wrote:
               | >A white reflective surface (whiteboard) in direct
               | sunlight is 1.6cd/cm^2. Consumer monitors are ~300cd/cm^2
               | 
               | Why does it hurt my eyes to look outside after a while
               | looking at a screen in a well lit room? (the sun is not
               | directly visible, just buildings, trees and sky)
        
               | atomicnumber3 wrote:
               | Because the sun is an enormous sphere of hydrogen-helium
               | plasma with a core that's undergoing fusion just due to
               | gravity. Even indirect sunlight is still a very large
               | amount of light and energy.
               | 
               | I don't mean to sound flippant, but I think sometimes
               | people forget just how insanely energetic stars of all
               | sizes are.
        
               | TremendousJudge wrote:
               | But GP's point was that a screen is much brighter than a
               | sunlit surface. You can't both be right, or I'm missing
               | something.
        
               | yoz-y wrote:
               | Hm, to be honest I find reading a book is direct sunlight
               | quite more challenging than staring at a screen, because
               | the reflected light is quite unbearable.
        
               | lukevp wrote:
               | Your units are wrong. Monitor brightness is measured in
               | square meters not square centimeters. A square centimeter
               | is 10,000 times smaller than a square meter.
        
               | greenshackle2 wrote:
               | You've got your units wrong. Very obviously so, to anyone
               | who has ever taken a laptop outside in daytime.
        
               | Cerium wrote:
               | I think there is a unit error here. I believe that
               | sunlight on white paper is about 1.6cd/cm^2, while
               | consumer monitors are about 300cd/m^2 (meter not cm).
               | Essentially, you want the brightness to match the
               | environment.
               | 
               | http://www.infocomm.org/filestore/display_specs_and_human
               | _vi...
        
               | groby_b wrote:
               | There is indeed. Oops. I'd delete - no point polluting
               | the Internet with more bad info - but time window has
               | expired.
               | 
               | Thank you for the correction!
        
               | beervirus wrote:
               | As noted, your units are wrong. A white reflective
               | surface in sunlight is FAR brighter than a computer
               | monitor.
        
           | ergocoder wrote:
           | Yes, it does, especially when reading in poor lighting and
           | poor posture.
           | 
           | It turns out the best way to not damage an organ is to not
           | use it...
        
           | jedberg wrote:
           | Screens haven't damaged your eyes for a long time. That was
           | only true on the old CRT displays, which literally shot high
           | frequency EM at your eyes.
        
         | chpmrc wrote:
         | Where were you when my parents kept telling me "get off that
         | computer"? :'(
        
         | fsociety wrote:
         | Such a good point. I had a small existential crisis watching
         | programmers on YouTube/Twitch because I was focusing on the
         | sounds of the keyboard typing and realizing that they are
         | sitting in front of a screen typing for hours on end and how
         | pointless it was.
         | 
         | The second part of my crisis was that I was no different.
         | 
         | After a few months of dealing with this I remembered that
         | actually they are engaging with an entire world, and so was I.
         | Rhetoric is so stupid sometimes.
        
           | karatestomp wrote:
           | I find seeing video of myself using a computer downright
           | horrifying. I look like that? A good chunk of every day?
           | Yikes.
           | 
           | I mean I don't stop, because money, but I'd love to be able
           | to take weeks- to months-long breaks from screens.
        
           | ironmagma wrote:
           | Never heard it put so plainly, that's awesome.
        
         | literalanyone wrote:
         | I really wish this was discussed more often. As a parent, I am
         | constantly bombarded with people telling me I should limit my
         | kids' "screen time."
         | 
         | Generational skepticism of new technology is played out. Can we
         | move on yet?
        
           | s_dev wrote:
           | Both Steve Jobs and Bill Gates limited their kids screentime.
        
             | lhorie wrote:
             | So did John Doe. Not sure I understand what the argument
             | here is.
        
             | jedberg wrote:
             | I don't think either of those people are well known for
             | their excellence in parenting.
        
           | rietta wrote:
           | I SURE am glad my parents didn't limit my screen time as a
           | kid. I taught myself how to program from age 14 spending
           | countless, countless late night hours staring at the DOS
           | computer screen programming whatever caught my fancy. My
           | career would look so much worse if my parents had forbade me
           | from using the computer.
        
             | saiya-jin wrote:
             | careers to many of us are far from being the most important
             | things in our abysmally short lives
        
               | rietta wrote:
               | I find my work to be enjoyable and am glad it supports my
               | family and my team members who work for us. It started
               | out as literally me working crazy sleepless hours coding
               | freelance using the self taught skills.
        
           | EamonnMR wrote:
           | It's much harder to articulate "limit skinner box time" or
           | "limit time spent using services that play on gambling
           | impulses and give instant gratification like endless youtube
           | playlists and mobile games."
        
           | j45 wrote:
           | I find it's more helpful to see screen time in two buckets..
           | 
           | Creating/creative/thinking time spent on a screen is very
           | different than passive consuming time.
        
           | exclusiv wrote:
           | I'm with you but I think social media should be limited when
           | they get to that point.
           | 
           | Some parents also think you should be playing with your child
           | at all times and that's absurd too. It's good for kids to
           | learn how to entertain themselves and be creative as
           | individuals. There's not much more obnoxious than kids who
           | grew up with their parents always playing with them or
           | managing their attention and the kids complain about being
           | bored.
        
             | saiya-jin wrote:
             | Most kids complaining (loudly) about being bored are from
             | my experience those that are over-saturated with TV,
             | phones, tablets etc. that are almost always around. Once
             | you remove this (ie trip to remote nature/vacation), they
             | can go slightly mental for a while.
             | 
             | It seems to me that the recipe for that ideal self-
             | sufficient-loving-smart-social-over-achieving kids that all
             | parents seem to want to have is sort of a pipe dream, and
             | it always has been, just environment changed. We all want
             | them, but few will end up being one and its often not that
             | much a fault of a parent.
             | 
             | Plenty of love, plenty of time together, some time alone,
             | some with others, well-managed discipline seems like a good
             | start. I would add some traveling and exposure to foreign,
             | exotic cultures. One can't avoid screen time these days, I
             | mean if I want to show my kid to parents during Covid, it
             | has to be via webcam. But passive aimless consumption isn't
             | one for me, and for sure it won't be for my kids. I'll
             | rather put them into rock climbing course.
             | 
             | What happened to topics about billionaires forbidding the
             | access to phones & TV to their kids before age of 7?
        
           | bityard wrote:
           | Maybe those people telling you to limit screen time have
           | different observations than you. It really depends on the
           | individual child and my wife and I have first-hand experience
           | with both ends of the spectrum.
           | 
           | One of my kids thrives on screen time because she actively
           | seeks out creative and informative non-passive activities.
           | She is in control of her technology usage rather than the
           | other way around. And even though we keep tabs on her, we
           | trust her completely to manage her own time.
           | 
           | The other gets limited screen time because if we don't put
           | strict limits on it, he has absolutely immense self-control
           | issues. He throws temper tantrums, claims to be bored all the
           | time, picks arguments with others, refuses to follow simple
           | instructions, and won't stay in bed for anything at bed time.
           | Put simply: he displays all the hallmarks of chemical
           | addiction with even a moderate amount of daily screen time.
           | All of this is greatly decreased and comes very close to
           | being a model citizen when we reduce his screen time down to
           | only that which is required for his school work.
           | 
           | And somewhere in there is the fact that human adolescent
           | brains were not designed by evolution to sit indoors all day
           | look at screens or books.
        
             | Wowfunhappy wrote:
             | > Maybe those people telling you to limit screen time have
             | different observations than you. It really depends on the
             | individual child and my wife and I have first-hand
             | experience with both ends of the spectrum.
             | 
             | But for those observations, is the problem the _screen_ or
             | what is _on the screen_? As a society, I 'd like us to
             | focus less on the former and more on the latter.
             | 
             | A screen is just a window that become anything, and I don't
             | see why it should be inherently more or less educative than
             | any other experience.
             | 
             | Let's say in the future we get perfect VR headsets that can
             | perfectly replicate every sense. Would the conversation be
             | different?
        
           | A4ET8a8uTh0 wrote:
           | Well, I agree that the issue needs careful examination. Not
           | all screen time is created equal. That said, to an average
           | person, screen time does not really equal educational
           | applications, writing code or even reading. Instead, to most,
           | it tends to mean Facebook, Netflix, Youtube, and increasingly
           | creepier games designed to suck you in and bleed you( or your
           | parents ) dry.
           | 
           | I am saying this as an expecting parent. My parents were
           | raised without TV and there is a clear difference on how they
           | processed the information presented to them. Heavens know I
           | do not process it the same way what with being basically
           | raised on internet and tv.
           | 
           | In short, I do not think we should move on. I think it is
           | worthwhile to ask more nuanced questions than 'is screen time
           | bad-discuss'.
        
           | jedberg wrote:
           | Yeah me too. Anecdotally with my two children, they make huge
           | educational jumps every time we increase their screen time.
           | 
           | Screen time for us was playing games with an educational
           | value and watching TV with at least some educational value.
           | 
           | Recently we've started letting the five year old watch TV
           | purely for entertainment, and the three year old sometimes
           | watches too, but even then, both of them suddenly got a lot
           | better at storytelling and coming up with their own original
           | stories.
           | 
           | So even "pure entertainment" seems to have educational value
           | for the kids.
           | 
           | The rule in our house is that you can't use a screen if the
           | sun is up unless it's a weekend. That seems to be a good
           | balance (although under the current conditions that's
           | flexible if the screen is for an online class).
        
             | ryandrake wrote:
             | I think it's irrational. "Screen time" is today's Dungeons
             | and Dragons and heavy metal. People are doing things
             | differently today than I did at that age, therefore it's
             | bad and needs to be limited.
        
               | rxhernandez wrote:
               | As a millennial who spent most of the past decade behind
               | a computer screen (and probably the previous decade
               | before that inside of books), I mourn the time I lost
               | that could have been spent interacting with the world.
               | 
               | Moreover, maybe both sides are right? Maybe you need
               | heavy "screen interaction" to be successful in this world
               | and maybe too much time is being consumed by screens
               | rather than physically interacting with the world. Maybe
               | there is a balance that isn't close to being struck by
               | most.
               | 
               | Maybe I would like my future children (if I have them) to
               | interpret the world largely through their own eyes rather
               | than a clickbait interpretation manufactured to get more
               | money.
        
               | noir_lord wrote:
               | I love the fact that my generation (nearly 40) and the
               | one after me both grew up playing ultra violent games and
               | listening to rap etc and yet the crime statistics for
               | violent crime are lower than they've been for about a
               | century.
               | 
               | Schadenfreude on that one.
        
             | jrochkind1 wrote:
             | You started out I was expecting you to be very liberal with
             | 'screen time', especially agreeing with the GP who seemed
             | the same. But:
             | 
             | > The rule in our house is that you can't use a screen if
             | the sun is up unless it's a weekend
             | 
             | I think that's actually limiting screentime more than most
             | US households, you aren't actually on the "no need to limit
             | screentime" side at all!
        
               | jedberg wrote:
               | It's important to note that we are night owls. The kids
               | have TV basically from 7pm (when I turn on Jeopardy
               | regardless of sunset) until they go to bed around 11pm.
               | And during the current situation, sometimes they go to
               | bed around 1-3am.
               | 
               | So they actually get a lot more screen time than most of
               | their peers.
        
               | noir_lord wrote:
               | Yeah, we've shifted to later as well, I'm a night owl by
               | inclination, the boy seems to be as well, he'll crash
               | from 3am til 12pm then get up.
               | 
               | Given he's happy I'm not rocking that boat.
        
               | tasuki wrote:
               | Five and three year old go to bed around 1-3am? I don't
               | necessarily have an opinion on that, but it surprises me
               | :)
        
               | jedberg wrote:
               | They also wake up around 11am-1pm, so they still get 10
               | hours of sleep. :)
               | 
               | Turns out not every kid loves mornings!
        
             | eanzenberg wrote:
             | I think limiting screen time is to allow young kids to
             | concentrate on tasks for longer periods of time. This is
             | recommended by most pediatricians.
             | 
             | Our kids, who are home with us and in the same room as
             | where both me and my wife work, are able to play by
             | themselves for the most part every weekday from 9-12pm.
        
             | deeblering4 wrote:
             | My partner and I were just having a similar conversation.
             | About how we "feel bad" when our child uses their tablet a
             | lot in a day but we're not quite sure why.
             | 
             | When using the tablet they are playing educational games
             | about sorting/identifying shapes and colors, painting by
             | numbers, solving puzzles, etc.
             | 
             | Or watching/listening to songs that are teaching them
             | colors, numbers, letters, etc. And dancing around because
             | they like the music.
             | 
             | These are drilling home lessons in a fun and repetitive way
             | that we simply could not do for our child otherwise. And
             | we've seen educational jumps from it too.
             | 
             | Plus, let's be real, I make my living through a screen. So
             | why is "screen time" stigmatized as a bad thing?
             | 
             | I've come to the realization that screens are not an evil
             | thing to be minimized at all costs. They are the most
             | powerful tool of the modern age.
             | 
             | It's just important to get some exercise and fresh air too.
        
           | goostavos wrote:
           | Eh, I'm in camp "limit their screen time" if the screen time
           | is all junk food. I also don't have kids, so what do I
           | actually know? :) The only context for this opinion knowledge
           | of the army of adults whose job it is to "maximize
           | engagement" and give little dopamine hits.
           | 
           | Some apps just seem predatory.
        
             | jedberg wrote:
             | > Some apps just seem predatory.
             | 
             | Oh boy are they ever. We spend a lot of time curating the
             | kids' screen time. We try every app first.
             | 
             | Youtube Kids is banned. Youtube's AI sucks at vetting
             | content and they refuse to put humans on the job.
             | 
             | The apps from PBS are all gold. Disney+ has so for proven
             | to be good at making sure all the content is kid
             | appropriate.
        
               | falcor84 wrote:
               | YouTube Kids also lacks an option to disable Autoplay,
               | which makes it pure evil in my eyes.
        
               | jedberg wrote:
               | Amusingly PBS kids is the only streaming app I've seen
               | that doesn't ask "are you still there". We've left that
               | one running overnight by accident and it just keeps going
               | and going.
        
               | rorykoehler wrote:
               | I dunno why we can't just hand select any video from
               | youtube for youtube kids? I don't need youtube algos to
               | recommend bullshit to my kids and I don't need youtube to
               | control what i show to my kids.
        
               | jedberg wrote:
               | You can create a playlist if you want to hand curate a
               | list. But the whole reason I use streaming services is so
               | I can pay someone else to curate the content for me.
        
               | rorykoehler wrote:
               | I can't put a playlist into YouTube kids. I tried.
        
               | jedberg wrote:
               | Here's a video on how to do it:
               | 
               | https://www.youtube.com/watch?v=AjKmQwhSk1s
               | 
               | It's not exactly a playlist, but you can hand select
               | content.
        
               | rorykoehler wrote:
               | Thanks will check it out.
               | 
               | Edit: I watched the video. I'll have another look on the
               | app tomorrow but I'm pretty sure that video does what I'm
               | complaining about. The catalogue is pitiful. I just want
               | access to all of YouTube. It's not a big ask but they
               | won't make $$ off of Showing adult videos to kids so they
               | won't offer that.
        
             | sigfubar wrote:
             | It's the parents' job to teach kids how to tell junk food
             | from healthy food; predatory apps from apps which add
             | value; "you're the product" from "you're consuming the
             | product". I do this with my kid, and technology is a boon
             | for her. However, most adults aren't qualified to make the
             | distinction between good and evil, so their kids suffer
             | too.
        
               | eanzenberg wrote:
               | Lots of "teaching" is literally excluding from
               | consumption for young kids. Parents know better than
               | their kids, why entrust that kind of advanced decision
               | making within them?
        
               | filoleg wrote:
               | >Lots of "teaching" is literally excluding from
               | consumption for young kids
               | 
               | Sure, I agree with you. Limit what they have access to
               | while using the screen, but not the actual screen time.
               | 
               | Somewhat analogous to the difference between limiting
               | junk food from kids' diets vs. making them go full vegan
               | and doing intermittent fasting.
        
               | eanzenberg wrote:
               | Like most things moderation is key.
        
               | JoshTriplett wrote:
               | > why entrust that kind of advanced decision making
               | within them?
               | 
               | Because then there's a hope that they'll actually learn
               | the underlying principle and make similar decisions in
               | situations where someone else is not directly in control
               | of their behavior.
               | 
               | There are kids who don't get to eat ice cream before
               | dinner at home because that's the rule, who will happily
               | do so when over at someone else's house without their
               | parents around to enforce that rule. Then there are kids
               | who actually understand _why_ they shouldn 't eat ice
               | cream before dinner, who will decline to do so even if
               | they have the opportunity. (That doesn't mean they'll
               | exercise perfect judgment every time, but then, there's
               | also no guarantee they'll follow rules that aren't being
               | enforced.)
               | 
               | It's important to develop the critical thinking skills to
               | filter out "junk food" content.
               | 
               | (To clarify: I'm not talking about children too young to
               | understand the concept, I'm talking about children more
               | than old enough to make such decisions in an informed
               | way. Roughly speaking, think 12, not 3.)
        
               | acituan wrote:
               | > It's the parents' job to teach kids how to tell junk
               | food from healthy food
               | 
               | I agree with the sentiment, but an important point is not
               | the forget that behind the curtains there is an army of
               | product managers, AI PhDs and tons of data running a
               | version of Truman Show on each one of us. Usually "you're
               | the product" is blended with "you're consuming the
               | product that adds value". For example, you can search and
               | land to a video to watch something educational, but
               | opaque recommendation algorithms, un-turn-offable
               | autoplays, nagging notifications and whatnot will try to
               | convince you like an optimally-annoying salesman to stay
               | just a little more and pay them in attention and ad
               | revenue, or get you those dopamine hits so that you will
               | want to come back to "just check" the app in a pavlovian
               | fashion.
               | 
               | Whenever you or your kid interact with a screen, you are
               | potentially interacting not only with a machinery with
               | inherent information asymmetry but also one that we train
               | every day exactly how much abuse we are willing to take.
               | For further reading see Tristan Harris and the design
               | ethics questions he brings into light.
        
           | egman_ekki wrote:
           | There's a really interesting book called Digital Dementia
           | that describes effects of modern digital tools on our brain.
           | I'm not saying it's 100% correct, but interesting read
           | nevertheless.
        
           | eanzenberg wrote:
           | >> Generational skepticism of new technology is played out.
           | Can we move on yet?
           | 
           | Is it, though? Spending lots of time in front of a TV is
           | still considered harmful as it was half a century ago.
        
         | gfxgirl wrote:
         | I totally agree with you.
         | 
         | I also think we might want to compare. I suspect 150 years ago
         | most people stared a shovel 34 years of their life or a clothes
         | washing bowl etc..
        
         | nixpulvis wrote:
         | You can make it out to be whatever you want. But there _is_ a
         | physical difference between a screen 's light emissions and the
         | light perceived from paper. I've always been curious exactly
         | _how_ much different, but anyone claiming otherwise is suspect
         | in my eyes.
        
           | Footkerchief wrote:
           | Your intuition is correct. Even if they have the same
           | apparent color, two light sources can have drastically
           | different spectra, which is perceptible. Some info here:
           | https://en.wikipedia.org/wiki/Color_rendering_index
        
       | nsxwolf wrote:
       | Drooling too? Or just staring? How about "looking at",
       | "watching", "reading", or just "using"?
        
       | ryeguy_24 wrote:
       | Haven't we also gained 34 years in longevity in the last 100
       | years? So, net net we are good? :)
       | 
       | More seriously, what types of activities did screens replace? Was
       | it talking to other people? Physical activities/labor? Reading?
       | Nothing?
        
         | srl wrote:
         | I know your first comment is mainly in jest, but...
         | https://www.seniorliving.org/history/1900-2000-changes-life-...
         | 
         | For white folk in the US, even the life expectancy at birth
         | (arguably an inflated metric) hasn't increased by 34 years
         | since 1900. For all people in the US (basically everywhere
         | else, too, I think), that ~30-40 years is dominated by
         | infant/youth mortality getting driven hard towards 0.
        
       | jayroh wrote:
       | Ugh, I did not need to see this today :(
        
         | scollet wrote:
         | Ironic
        
       | chadlavi wrote:
       | speak for yourself, some of us are definitely above average
       | 
       | >_>
        
       | redsymbol wrote:
       | Aaaand now I feel the sudden urge to get away from this screen
       | and go walk through some trees. I'll see ya all later.
        
         | 2OEH8eoCRo0 wrote:
         | I'm an ape man i'm an ape ape man no i'm an ape man
         | 
         | https://www.youtube.com/watch?v=aRHqs8SffDo
        
       | onion2k wrote:
       | I'm happy to be above average at something at last.
        
       | austinshea wrote:
       | Staring is an embarrassing word for this person to have imposed
       | upon the actual study.
       | 
       | Science journalism is a real problem.
        
       | patrickcteng wrote:
       | So, as a child my mom always insisted on me reading with lots of
       | lights turned on. She claimed that reading the dark causes short
       | sightedness and etc.
       | 
       | Now, as an adult, I find that I have my screen's brightness
       | turned up way more than my peers. For example, although it's
       | currently very sunny right now in LA, I have my brightness turned
       | up 100% on my 16" MBP. Though, in the evenings, it's more
       | comfortable at 3 or 4 steps down from 100%.
       | 
       | I can't help but to wonder -- did she condition my eye to be less
       | sensitive to light and have thus slightly ruined my low-light
       | vision?
        
         | kingbirdy wrote:
         | Why wouldn't you have your brightness at 100% if it was sunny?
         | You need the backlight to be bright to avoid it being washed
         | out by sunlight. It would be weird if you said you used 100%
         | brightness in the dark, but that's perfectly reasonable when
         | it's sunny.
        
       | jedberg wrote:
       | Protip for everyone, since I've done a lot of research on this:
       | 
       | If at all possible, cut the blue from your screen at all times.
       | 
       | I use flu.x [0] and even during the day I set my color temp to
       | 5800K instead of the standard 6500K. You won't notice the change
       | much, but it will make a huge difference on how tired your eyes
       | get.
       | 
       | I also go down to 1850K at night (candlelight basically) to both
       | ease strain on my eyes and not mess up my sleep. It makes a
       | noticeable difference.
       | 
       | [0] https://justgetflux.com
        
         | jabroni_salad wrote:
         | I set mine to 3800K for 24 hours a day. Even during the day
         | under florescent lights and an open window, if I have to toggle
         | it off for any reason it feels like my eyes are being stabbed
         | with tiny knives.
         | 
         | I don't know about the sleep stuff (is that hard science yet?)
         | but I personally definitely staved off eye strain and dry eye
         | issues with f.lux and no other changes.
        
           | jedberg wrote:
           | > I set mine to 3800K for 24 hours a day.
           | 
           | Sometimes when I travel to the other side of the planet but
           | don't update my laptop clock, it goes into "night mode"
           | midday. I can use it but I find it jarring with the natural
           | light.
           | 
           | > I don't know about the sleep stuff (is that hard science
           | yet?)
           | 
           | They have links to studies on the flux page [0] although I'm
           | not sure how much of that is peer reviewed or if the sample
           | sizes are big enough.
           | 
           | I know that it makes a difference for me. My sleep quality
           | went way up when I started using flux, and it goes down when
           | I look at screens without it too late at night (like my not-
           | so-smart-TV).
           | 
           | [0] https://justgetflux.com/research.html
        
         | nsilvestri wrote:
         | I've had sunset-synchronized f.lux/redshift for 7 or 8 years
         | now. Turning on redshift during work revealed I had pavlovian
         | conditioned myself into getting sleepy when the blue light goes
         | away.
        
           | jedberg wrote:
           | Hah! Never thought about that side effect. I did both at the
           | same time so never experienced that.
           | 
           | Good to know.
        
         | M5x7wI3CmbEem10 wrote:
         | any thoughts on blue light glasses? or setting your screens to
         | grayscale?
        
           | jedberg wrote:
           | > any thoughts on blue light glasses?
           | 
           | I tried them. They worked well enough, but I don't like to
           | wear glasses so I stopped. Also I didn't like how they cut
           | _all_ blue light, including the blue from the sunlight. It 's
           | important to get blue light during the day to help your body
           | regulate it's sleep hormone production.
           | 
           | > or setting your screens to grayscale?
           | 
           | That's orthogonal. The white part of the grayscale still has
           | blue light in it. Grayscale is good for helping with
           | attention issues, but not blue light issues.
        
             | M5x7wI3CmbEem10 wrote:
             | why attention?
        
               | jedberg wrote:
               | The OS likes to use color to grab your attention. Red
               | notification dots, bright orange tabs (like on HN), etc.
               | 
               | By going grayscale, it limits how much attention the OS
               | (or any other app) can grab your attention with color.
               | 
               | I tried it, it annoyed the heck out of me, so I went
               | back. But it did work -- it made me less interested in
               | using my devices.
        
       | avgDev wrote:
       | Average Adult Will Spend 60% of Their Existence With Their Eyes
       | Open.
        
       | jrochkind1 wrote:
       | Oh, I can totally beat that and do way more than 34 years.
        
       | scottLobster wrote:
       | So a few minutes ago I wrote code for a company, producing
       | economic value. Last night I kept up with family, maintaining
       | healthy personal relationships. Right now I'm engaging in
       | intellectual discussion of major issues with other people. And
       | last night I watched an episode of Mr. Robot, engaging my brain
       | with a stimulating story. And yes, sometimes I just look at
       | animal gifs on imgur.
       | 
       | I see no problem continuing any of this for 34 collective years.
        
         | gowld wrote:
         | How much of that time was caring for your eye health so you
         | don't go blind early?
        
           | sekai wrote:
           | With that logic, 10% WOW players from 2009 would be half-
           | blind, but they're not
        
           | ImprobableTruth wrote:
           | Is there anything to indicate that excessive screen usage can
           | cause blindness? Especially since LCD aren't that bad
           | concerning eye strain.
        
             | kart23 wrote:
             | I get pretty nasty headaches and my eyes start hurting
             | after looking at monitors with PWM backlights. Some of my
             | screens are fine, some begin to hurt my eyes after an hour
             | or so.
        
           | scottLobster wrote:
           | I'm 32 and needed glasses for the first time last year, just
           | mild nearsightedness which runs in my family, and I'm
           | actually doing better than most (my mom and sister both
           | needed glasses as teenager).
           | 
           | I eat healthy/exercise and use dark-mode themes where
           | available to minimize glare. That's it's for eye health. I
           | wonder if the negative association of eye health to screen
           | time is less about the screens and more about high blood
           | pressure brought on by being sedentary. High blood pressure
           | absolutely destroys the eyes over time.
        
           | carlisle_ wrote:
           | This seems quite sensationalist.
        
           | sinity wrote:
           | You don't go blind from staring at a screen. Claims otherwise
           | are the same as 5G conspiracy theories. Photons are photons.
           | 
           | You might get issues from focusing at the same distance all
           | the time. Or that theory about dopamine may be true - but if
           | anything, screens are an _improvement_ over things like paper
           | books. And it applies to adolescence anyway.
           | 
           | And nearsightedness is not anywhere near going _blind_.
        
       | stevebmark wrote:
       | Part of how myopia works: When your peripheral vision is in focus
       | too much, because something is close to your face like a screen,
       | your eye (which grows on its own, without brain involvement), is
       | told to grow longer to to help reduce the over sharpening of the
       | world it thinks it has.
       | 
       | This happens in developing humans, at some point in adulthood
       | it's suspected this stops (although some people see worsening
       | myopia past the typical age range where it stops).
        
         | M5x7wI3CmbEem10 wrote:
         | would it help to keep your phone or monitor further away?
        
           | stevebmark wrote:
           | Having less focus in your peripheral vision might help slow
           | myopia progression, so possibly. However wearing glasses and
           | contacts automatically add more focus to peripheral vision,
           | signaling the eye to grow. So moving something further away
           | from your face while wearing glasses or contacts may have
           | less of an effect. Having periods of blurry vision, like
           | looking at something far away for some time without glasses
           | or contacts, may be beneficial in that it may signal the eye
           | to become less football shaped to help correct for the
           | blurriness it now is experiencing. However I haven't seen any
           | evidence this can reverse or improve myopia, rather this just
           | seems to slow its progression.
        
             | veddox wrote:
             | > Having periods of blurry vision, like looking at
             | something far away for some time without glasses or
             | contacts, may be beneficial in that it may signal the eye
             | to become less football shaped to help correct for the
             | blurriness it now is experiencing.
             | 
             | I literally just had that yesterday, and was wondering what
             | it was. My eyes have always been very good, but I have been
             | a bit worried of late after a few such blurry episodes...
        
               | stevebmark wrote:
               | no, I mean intentionally unfocusing your eyes by looking
               | at something far away without wearing correction.
               | Involuntary blurriness or double vision is unrelated.
        
       | ttizya20 wrote:
       | phd's will spend 5 years starring at paper
        
       | GaryNumanVevo wrote:
       | Some good tips to prevent myopia:
       | 
       | - 30/30/30 rule: Every 30 minutes look at something 30 feet away
       | for 30 seconds
       | 
       | - Take regular walks outside: it will lower your blood pressure,
       | and expose your eyes to violet light
       | 
       | - ensure brightness of environment closely matches brightness of
       | screen to prevent eye strain
        
       | matthewfelgate wrote:
       | We spend 34 years of our lives staring at computer screens.
       | 
       | The rest of the time is just wasted.
        
       | fgnewsom wrote:
       | GAVIN NEWSOM NEEDS TO GOTO JAIL! FUCK HIM!
        
       | mchusma wrote:
       | Average adult will spend 34 years with a miracle portal into
       | infinite knowledge and possibility.
        
         | tbizz9000 wrote:
         | YES, it is indeed wednesday... my dude
        
         | karatestomp wrote:
         | Hardly. Scratch most topics past the surface level and _if you
         | 're lucky_ the Web can find you the book you need. Usually
         | though you'll need to find the best book the Web can find you,
         | then use that book and/or correspondence with experts to find
         | the ones you actually need.
         | 
         | The problem seems to be a mix of tons of stuff just not being
         | on the Web yet, even decades in (some of it's in ebooks,
         | though, yes, but a whole lot isn't) and Google having given up
         | on "organizing the world's knowledge" or whatever their
         | supposed mission was (now it's plainly "organize the world's
         | advertising dollars into our bank account") so it may be there
         | but good luck finding it.
        
           | akiselev wrote:
           | Thirty years ago you couldn't scratch past the surface of
           | more than a few dozen topics based on your local library's
           | availability, _if you were lucky_ to have a decent one to
           | begin with.
           | 
           | Between libgen, scihub, Google Books, Project Gutenberg,
           | torrent sites, and the rest of the internet we've got access
           | to almost all of the world's knowledge _for free_ with plenty
           | of avenues to interact with experts using a variety of
           | different channels for knowledge that hasn 't been put to
           | paper yet.
        
             | karatestomp wrote:
             | Making piracy easy _has_ been super-helpful. Libgen doesn
             | 't have (anywhere near) everything but it's great for
             | surveying a field and picking up some portion of the must-
             | have resources.
             | 
             | > access to almost all of the world's knowledge for free
             | 
             | I'd guess we've got access to ~10% of it (but it's a good
             | 10%!) for free, ~30% paid (but usually piratable!), and the
             | remainder unavailable as a paid electronic resource but
             | _maybe_ (often not) as a paid paper one and _maybe_ (often
             | not) available pirated--maybe you can at least _locate_ or
             | _learn of its existence_ with the Web, but possibly it 's
             | totally unknown to the Web outside of maybe a reference in
             | some books that happen to be digitized (this does actually
             | happen, though you do usually have to get a _little_
             | obscure before it does, but sometimes not as obscure as one
             | might think).
             | 
             | [EDIT] to be clear I think the Web is an excellent research
             | tool, _however_ an awful lot of its value in that role is
             | from piracy (saving me, say, having to inter-library-loan
             | or buy a book just to find the books that book name-drops
             | in its preface, or to read one relevant chapter, or to see
             | the book 's index so I can find out whether I need it in
             | the first place). I think its containing anything like "all
             | the world's knowledge", even for liberal values of "all",
             | is far from true, and there's a risk of thinking if
             | something exists it's _probably_ available as a digital
             | resource delivered over the Web (far from true), and if it
             | doesn 't then surely it's at least possible to find out
             | about its _existence_ on the Web (also not true), and if
             | neither of those are true it must be something of no value
             | whatsoever to anyone or wildly obscure (not true).
             | 
             | [EDIT EDIT] then even if it _is_ on the web, it can be
             | really hard to find something that 's not on one of a few
             | major sites using search. More so than it used to be. It
             | can take so damn long that pirating and reading a book on
             | the topic on Libgen can be faster than finding the same
             | info on the open web, even if it's there, which is pretty
             | damning of the state of web indexing. As I wrote in another
             | comment on this thread, it was once possible to be fairly
             | sure when one had reached the edge of Google's knowledge
             | and the thing you're looking for _was not_ in its index--
             | such certainty is now almost impossible, mostly because of
             | how Google search (and seemingly all other web search
             | tools) has changed, not because of increased total content.
        
             | asdff wrote:
             | Proportionally, it might not be much better today. Maybe
             | 1/100,000 books is exactly the piece of information you
             | need. Certainly the rest of the books aren't total crap
             | either, they at least passed that bar of getting the book
             | published and making some sense. I wouldn't be surprised if
             | the signal to noise ratio on the internet today wasn't
             | 1/billion web pages with all the automatic SEO crap and
             | misinformation out there today. The sites and resources you
             | listed are popular in tech circles, but are not mainstream
             | at all. Then again if they were, they probably wouldn't
             | exist as we know them, if at all.
        
           | castis wrote:
           | Google, for all its current problems, _has_ made organization
           | of the worlds knowledge vastly better than it was before they
           | showed up.
           | 
           | I could be wrong but just surrounding the field of software
           | development, there's probably already more relevant
           | information on the internet than I could possibly consume in
           | my life.
        
           | rfdearborn wrote:
           | Approximately once per week I observe a comment on HN saying
           | approximately "search doesn't work anymore." Why is this? Why
           | do I only observe such complaints here?
        
             | karatestomp wrote:
             | Lots of people here who were and remember being "good at
             | search" and able to make exactly the thing they're looking
             | for shoot to the top 3 spots on the results screen and
             | being able to craft a series of searches such that, if they
             | all failed, one could be _pretty damn sure_ the information
             | wasn 't online or at least was hidden from the Google bot,
             | neither of which are really possible anymore. The 100th
             | time one attempts to find something on Google that one
             | _knows_ is there but just _cannot_ get to show up no matter
             | how many rare keywords one uses, one concludes Google has
             | lost some pretty significant utility it used to have and
             | starts to wonder what one is not finding when one _doesn
             | 't_ know exactly the page one is trying to find.
             | 
             | (of course it may be better for lots of other things, but
             | for a fairly large set of "finding things on the Web" tasks
             | it's _way_ worse than it used to be, to the point of being
             | nearly useless--in part I think this is because sometime
             | around 2008-2010 they stopped trying to fight webspammers,
             | choosing instead to embrace some set of them provided they
             | play by Google 's rules, and downrank anything that wasn't
             | "well-behaved" webspam or well-known sites _hard_ )
        
               | bityard wrote:
               | I definitely remember a time when Google was much, much
               | better at returning relevant results for technical
               | content. My feeling is that there are (at least) two
               | factors at play:
               | 
               | 1) Google and other search engines revised their
               | algorithms more than a decade ago. Instead of showing you
               | results for what you searched for, they now show you what
               | they _think you meant_ based on your search history and
               | the search histories of millions of other users. This
               | means searching for uncommon topics and phrases get you
               | useless results. And you can't disable this functionality
               | because it's baked into the core of how Google indexes
               | and categories the content that it slurps up from the
               | web.
               | 
               | 2) Blogspam authors and e-commerce sites have gotten SEO
               | down to a science, to the point where searching for
               | nearly _anything_ not super specific no longer gets you
               | _information_ about that particular thing, it gets you
               | blogspam articles filled with fluff and affiliate links,
               | or half-broken e-commerce sites trying to sell you
               | something vaguely related to what you searched for. This
               | is not technically Google's fault but there is a lot they
               | could do to curb this, but all that ad revenue on those
               | sites is how they earn that sweet sweet lucre.
        
               | karatestomp wrote:
               | > This is not technically Google's fault but there is a
               | lot they could do to curb this, but all that ad revenue
               | on those sites is how they earn that sweet sweet lucre.
               | 
               | That had been going on for years, but there'd be clear
               | times when Google got ahead of it and results would get
               | much better for a while, and because search was so much
               | more precise it was possible to work around the spam.
               | That those good times stopped happening and results are
               | now a consistent and fairly high level of "spam-filled"
               | by content that's seemed pretty much the same _sort_ of
               | crap for years, leads me to conclude they stopped trying.
               | IIRC right around then they stopped the  "no no, our ads
               | our different and good, they're just text and always
               | formatted the same way so it's easy to tell what they
               | are" and became just another banner ad slinger.
               | 
               | [EDIT] just mined Slashdot for that last bit, looks like
               | that happened around the last half of '07, which roughly
               | checks out with my recollection of Google search abruptly
               | getting much worse around '08-'09 then never getting
               | better again.
        
           | joefourier wrote:
           | That's an awfully pessimistic view of things. I've studied
           | some fairly obscure corners of computer science and the
           | Internet has allowed me to get instant access to mountains of
           | scientific papers, a huge variety of books (many of which are
           | out of circulation), incredibly high-quality courses on
           | maths, DSP, algorithms and the like.
           | 
           | Previously I would have had no way of accessing any of that
           | information unless I happened to be at the right university
           | with the right department, or in some high-level research
           | institute.
        
             | karatestomp wrote:
             | Certain fields are much better off than others. One might
             | expect that CS would be among the best-represented on the
             | Web.
        
           | dplavery92 wrote:
           | I've definitely felt and experienced the situation you're
           | describing, but I think you might be painting with too broad
           | a brush.
           | 
           | Sources like ArXiv, Google Scholar, and Semantic Scholar have
           | made it really easy for me to access tons of deep,
           | academic/professional level knowledge in my field
           | instantaneously and for free. I know that Physics, Math, and
           | Computer Science are relatively uniquely privileged when it
           | comes to ArXiv, but even paywalled journals are _more_
           | accessible in the internet age than they were before. I 'm
           | even able to find public-released technical info from the DoD
           | through DTIC that I don't think I would ever know what to
           | request without having it come up through search engines.
           | 
           | Likewise, tons of undergrad classes through MIT and the Ivies
           | are available for free on Youtube; more still are available
           | with exercises and some form of certification through
           | services like Coursera, EdX, and Udacity. Some graduate and
           | professional-level courses are starting to come online
           | through these institutions as well; the Institute for
           | Advanced Study has started releasing its lectures on Youtube
           | over the past few years.
           | 
           | I can find manuals for my car, my appliances, and all my
           | electronics online. I have access to all sorts of do-it-
           | yourself how-tos on Youtube when I want to do work around the
           | house. I have StackOverflow for when I have challenges with
           | programming languages and tools that aren't clear from the
           | docs, and the rest of the StackOverflow network when I have
           | questions that are more specific to my problem domain.
           | 
           | There's more throughout all sorts of fields: instant
           | translations with Google translate and langauges lessons
           | through DuoLingo, Rosetta Stone, et al; music lessons on
           | Youtube, etc.
           | 
           | Again, I've been through the experience where some older
           | materials just aren't as available as I'd like, and where the
           | normal search tools only bring you part of the way. But I
           | think you're taking a lot for granted here.
        
           | eyko wrote:
           | It's not for us to judge what sort of information constitutes
           | knowledge.
        
           | VBprogrammer wrote:
           | I'm not sure about that. The topics I want to dig into I
           | usually find it's harder to get the level of depth I want on
           | a topic in book form than I do than to find videos on
           | YouTube.
           | 
           | Some random examples:
           | 
           | - I'm interested in turbine engines, AgentJayZ has a while
           | host of videos taking real turbine engines apart, talking
           | about obscure features like compressor variable valve vanes
           | etc.
           | 
           | - Plumbing, almost everything I've ever needed to know about
           | plumbing has been available from PlumberParts / dereton33.
           | 
           | - Woodworking, I basically learned everything I know from
           | watching people like Matthias Wandel.
           | 
           | - Recently I've been digging to electronics, I have an
           | excellent book "Practical Electronics for Inventors" but
           | every now and again I need to hear a different take on the
           | same things and invariably there is a good video or article
           | which clears it up for me.
           | 
           | What's more, to get the level of detail these guys show for
           | free in book form would mean investing in some seriously
           | expensive books, most of which hide the interesting parts
           | under a lot of uninteresting maths.
        
             | gibolt wrote:
             | What a great point. If I want to know how to do something
             | physical, or learn how a piece of hardware works, YouTube
             | is the place.
             | 
             | Since it is Google, how awesome would it be if videos also
             | had related web searches attached to them, instead of just
             | related videos. How-tos could have links to the original
             | manual, the most detailed maintenance manuals, or patents
             | and blogs detailing the physics behind how that thing
             | works. Probably not going to happen and would only be for
             | power users, but it could be so powerful.
        
             | karatestomp wrote:
             | Oh yeah, for the subset of content that is "watch an expert
             | do a thing" the Web has become _extremely_ good. Nothing
             | before touches it. In part I think it 's remained so
             | because almost all the content is on one site--there's no
             | web search involved in finding it at all, you just search
             | Youtube (which is owned by the main company that might help
             | you find videos on other sites). If Google'd found a way to
             | reward putting academic & deep cultural-knowledge material
             | on a platform they owned such that they had a near-
             | monopoly, perhaps that site would be good. The web at-large
             | might remain basically useless for it (or, probably, even
             | worse, as everyone went to that single platform) such that
             | it depends on one's perspective whether it's the _Web_
             | delivering value or just _Google 's platform_ that could be
             | served just about any damn way at this point (if they
             | decided to transition over to a new non-Web protocol _just_
             | for Youtube and put it in Chrome they might well succeed in
             | forcing everyone else to adopt it)
        
           | pharke wrote:
           | Due to the changing nature of the web I'd even say that the
           | sum total of useful information is actually decreasing year
           | over year. I believe we hit an inflection point a decade or
           | more ago when the number of people with specialized knowledge
           | and skills who were publishing information about their domain
           | online was surpassed by the new "content creators" whose
           | primary goal was to optimize for clicks and ad revenue. This
           | is unevenly applied across different areas of knowledge, the
           | amount of information about computer and media related topics
           | has increased but other areas seem to have realized a sharp
           | decrease. I don't have any hard numbers to support this, only
           | the feeling of it becoming increasingly difficult to find
           | expert information in many areas. More and more I have to
           | resort to public domain books as the only substantive source.
           | There's just a general sense of something deeply wrong with
           | the current state of the web.
        
             | nbardy wrote:
             | Even if the content creators overwhelm the rest of the
             | crowd now, you can still find experts and their content
             | continues to pile up. For example, iq of internet graphics
             | is still adding incredible content to his site 10 years
             | later. https://iquilezles.org/. He's not the only example
             | of this. There may be a higher noise to quality ratio, but
             | the quality content is still growing, you just have to get
             | better at tuning out the noise.
        
               | asdff wrote:
               | Discoverability is still hard when noise increases by the
               | day, and search engines have become useless to find
               | anything meaningful that isn't playing the SEO game.
        
           | SubiculumCode wrote:
           | This might be field dependent. All my research is based on
           | scientific journal articles and reviews, which are
           | electronically available, and books are more vanity affairs
        
             | youareostriches wrote:
             | Surely you started with textbooks.
        
               | SubiculumCode wrote:
               | College textbooks in cognitive sciences are the epitome
               | of "scratching the surface"
        
           | marcosdumay wrote:
           | "A screen" is not "the web".
           | 
           | That book will probably be in a screen too, since it's way
           | too hard to carry it around on paper.
           | 
           | Even "correspondence with experts" will be on a screen.
        
         | JSavageOne wrote:
         | Realistically the majority of that time is spent working for
         | some company, writing mundane CRUD applications and gluing APIs
         | together
        
         | SketchySeaBeast wrote:
         | And will use that infinite potential to binge watch Friends for
         | the 11th time.
        
           | dvtrn wrote:
           | I'll have you know this is a Star Trek: Deep Space Nine
           | household, and we are on our _12th_ rewatch of the Dominion
           | War, tyvm.
        
             | pintxo wrote:
             | If Netflix ever adds Spin City to their catalogue I will be
             | in trouble.
        
               | sergiotapia wrote:
               | watching newsradio here, with rpcs3 classics on the
               | second monitor
        
               | dvtrn wrote:
               | Let me tell you how much productivity I got back when
               | they took Frasier off last year.
        
               | Apocryphon wrote:
               | Newsradio for this guy
        
               | cableshaft wrote:
               | I have a folder of the entire series of Newsradio that's
               | been played in the background (while I do other things, I
               | don't even watch it, just listen)... sooo many times.
               | Corner Gas is the only other show I've played as often.
        
             | matwood wrote:
             | I'm going through TNG right now, and the stories still hold
             | up very well. There are a lot more useful lessons in them
             | than I remember when watching as a kid. I really do like
             | the humankind aspirational nature of the show also.
        
               | SketchySeaBeast wrote:
               | I went through TNG again a while ago and I was struck by
               | how much I'd forgotten, and how I'd kind of lost my way
               | in terms of my beliefs. I grew up wanting to be like
               | Picard, and watching them again reminded me of that.
        
               | bityard wrote:
               | I grew up on TNG and I'm now re-watching it all with my
               | daughter. The first season is just as rough as I remember
               | it, but I love how much of the core themes and character
               | of TNG they got absolutely right from the very first
               | episode.
               | 
               | One thing about the show that struck me is that I'm
               | amazed at how inter-personal communication has changed
               | over the decades. I thought I remembered everyone being a
               | lot more easy-going when I was a kid and then decided
               | that I must have imagined it. But no, sure enough, right
               | there on Star Trek you see the characters poking light
               | fun at each other not long after they first met, even in
               | a military setting.
               | 
               | Today people seem to take themselves much more seriously.
               | You have to be a lot more guarded and diplomatic,
               | sometimes even with people you know very well, otherwise
               | you risk alienation or embarrassment. I know TV is not
               | reality, yadda yadda, but there's a kernel of truth in
               | there somewhere.
        
               | SketchySeaBeast wrote:
               | It might be part of the TV era, but I imagine having
               | people who aren't constantly on the defensive would fit
               | into Gene's vision of a better tomorrow. If you can
               | assume that everyone in the room is on the same team and
               | wants the best for everyone, you probably would feel less
               | offended by gentle jabs.
        
             | smegger001 wrote:
             | only your 12... i may have problem.
        
             | Skunkleton wrote:
             | Deep Space Nine is probably my favorite TV series of all
             | time. I've only watched it twice though. Probably gotta
             | step it up if I am going to hang with this crowd.
        
           | gfxgirl wrote:
           | I have a large collection of movies and ripped them all to
           | Kodi. I was going though marking a bunch as watched and I
           | started to get slightly upset at myself as I marked each one
           | and thought "watched that one 8-10 times, watched that one
           | 5-6 times, watched that one 3-4 times, watched that one 5-6
           | times, etc etc. for many many movies. And there are TV series
           | I've watch multiple times as well. So much time. Sure I
           | enjoyed it but counting it all up is still shocking what else
           | that time might have been used for.
        
             | SketchySeaBeast wrote:
             | If you assume that rest time had no value, possibly, yeah,
             | but we have fun for a reason. Productivity can't be the
             | only thing in our lives.
        
       | volune wrote:
       | The medieval peasant spent how much time staring at dirt?
        
         | groby_b wrote:
         | Few of them stared at brightly glowing dirt, though. And few of
         | them continually stared at dirt a foot or two in front of their
         | faces.
         | 
         | There's debate how much damage that difference causes, but
         | pretending there's no difference is an unhelpful approach.
        
           | throwaway8941 wrote:
           | Tone down your brightness then? I use heavily customized dark
           | themes absolutely everywhere, and my screen is hardly
           | brighter than dirt. I have no problem looking at it for 30+
           | hours straight (though I don't do this anymore for other
           | reasons.)
        
         | acituan wrote:
         | Hominids spent 7 million years evolving on that "dirt" they
         | stared at.
        
       | aupchurch wrote:
       | These stats always freak me out when you extrapolate it over the
       | long term. The average adult will also spend 2 years commuting or
       | an entire year of their life sitting on the toilet.
       | 
       | Lot's of wasted time here people. I think this also shows the
       | power of what we can accomplish by spending 10 minutes a day
       | doing something.
        
         | woobar wrote:
         | If they sit on the toilet while staring at the screen, what
         | bucket these years are assigned to? I.e. these extrapolations
         | could result in multiples of your lifespan.
        
         | maerF0x0 wrote:
         | It can be quite difficult to convert random time savings into
         | valuable time.
         | 
         | 1) Is marginal free time actually converted to value (eg,
         | Quality study time vs TikTok infinite scrolling)
         | 
         | 2) Can Marginal free time be chained into valuable blocks
         | (saving 1 minute commuting such that you're 2 more minute earl
         | y for 30 appointments, you cannot chain that into a 1 hour
         | study block.
         | 
         | Edit: I will say Ankidroid has helped me get some value out of
         | random deadspace though.
        
         | kazen44 wrote:
         | why would spending time on the toilet be wasted time?
         | 
         | actually, sometimes, doing practically nothing is very valuable
         | for one's state of mind.
        
       | jliptzin wrote:
       | This was already true for people I know who were watching TV all
       | day since the 70s
        
       | napster4lyfe wrote:
       | time well spent, imo
        
       | nemo wrote:
       | I used to spend a lot of time in book/magazine/paper reading. Now
       | I read off screens mostly. 34 years of my life spent reading
       | would be time well spent regardless of the medium.
        
       | sunstone wrote:
       | Formerly the average adult spent 34 years staring at text on the
       | printed page.
        
       | derekp7 wrote:
       | This article is about the effects of eye strain, not the overall
       | mental health of looking at content on a screen.
       | 
       | With that in mind, what is it about a screen (emitted light) that
       | is worse than outdoors reflect light? One item I can think of, is
       | that looking at something with reflected natural light, the iris
       | contracts based on the total amount of light hitting it. Whereas
       | a screen may be brighter than the ambient light in the room,
       | causing more of a point source of light to hit the retinas that
       | would normally happen (which is why I've always found it more
       | comfortable to watch TV with some other light on in the room vs.
       | the room in total darkness).
        
         | volkk wrote:
         | i dont know whether this is accurate, but i've found lighter
         | color schemes for coding muuuch more pleasing on my eyes than
         | extremely dark/contrast-y ones
        
         | ishjoh wrote:
         | My optometrist mentioned that one big problem with being in
         | front of a screen is that the focal depth is close and
         | constant, and that can cause headaches and other issues. She
         | recommended I stare out a window or make a conscious effort to
         | look into the distance for 10 minutes every hour.
        
           | nerdponx wrote:
           | This is what I've always heard as well. Your eye muscles end
           | up "fixed" in a small range of positions, whereas with
           | looking at stuff off-screen (and especially outdoors) your
           | eye muscles do a wider variety of movements.
        
         | manmal wrote:
         | Screens are optimized for energy efficiency, so their emissions
         | are restricted to a narrow range of visible frequencies. They
         | don't even really cover the whole range of colors, but mix them
         | by combining RGB, which isn't the real thing. Eg you can make
         | something looking like violet light by mixing blue and red, but
         | it's not the same thing as the ,,real" violet.
         | 
         | Sunlight, however, is a wild mix of broadband EM emissions
         | across basically the whole spectrum, as you'd expect from a
         | glowing ball of plasma (halogen bulbs are actually similar in
         | that regard, they need and do have a UV filter). About a third
         | of the sun's emitted energy hits the earth's surface as near
         | infrared light, and then there is UV etc.
         | 
         | Near infrared light is very beneficial, the mitochondria in our
         | cells can increase their energy output as a direct consequence
         | of receiving photons in that frequency range. There are lots of
         | studies that showed improvement of many health conditions
         | following near infrared or red light therapy. I wouldn't be
         | surprised if NIR light helped prevent myopia too.
        
           | mattkrause wrote:
           | As far as your visual system is concerned, "real" violet
           | (e.g., from a tunable laser) and the "fake" RGB violet are
           | pretty much the same--it's coded as the relative amounts of
           | red/green or blue/yellow almost immediately after the cones.
        
             | bdamm wrote:
             | Not necessarily. There is a lot of analog in the eyes
             | beyond the nerves, and we don't know all the effects of
             | ambient light on the entire eye structure. Even if the
             | neural impulses end up being similar (and I doubt that) the
             | eye as a whole organ may not respond the same way. Maybe
             | that heat energy triggers something in the cornea? We don't
             | know.
        
               | heavenlyblue wrote:
               | We also can't prove the absence the magical wardrobe with
               | an entrance to Narnia from our universe, yet many people
               | would say you are insane if you think it's true.
        
               | mattkrause wrote:
               | I don't disagree that UV and IR exposure may be
               | important. Variations in UV exposure are thought to
               | account for changing rates of myopia, for example. There
               | may be non-image-forming receptors with different
               | spectral sensitivities for circadian rhythms.
               | 
               | However, the structure and function of circuits involved
               | in color representations has been studied to death, and
               | it overwhelmingly points to a tristimulus model where the
               | activation of the S/M/L cones matters, rather than the
               | complete power spectrum of the illuminant. The
               | sensitivity of rods and cones has measured measured with
               | exquisite sensitivity, both behaviorally and by directly
               | recording their electrical activity. Many downstream
               | neurons in visual cortex get their input from individual
               | L/M cones (parvocellular pathway). The others (magno,
               | konio) have a fairly simple mix of inputs from a simple,
               | spatially organized combination of the cones. In some
               | cases (especially within the retina), the individual
               | fibers have been traced and mapped.
               | 
               | There is a hell of a lot we don't know about the brain,
               | but the very early representation of color isn't one of
               | them. If you've got sources saying otherwise, I'd love to
               | see them.
        
               | mattkrause wrote:
               | (This may come off a bit harsher than I meant. It's just
               | that I'm surprised to hear someone doubt what I thought
               | was a well-established principle with lots of data behind
               | it. If you do have anything suggesting otherwise, I'd
               | legitimately love to read it.
               | 
               | If not, WebVision is an excellent resource with a long
               | chapter about color.
               | https://webvision.med.utah.edu/book/part-vii-color-
               | vision/co...
               | 
               | The Visual Neurosciences is a behemoth too, if you can
               | find a copy.
        
           | M5x7wI3CmbEem10 wrote:
           | would it help to set your screens to a grayscale setting?
        
         | 1e-9 wrote:
         | It appears that the lack of violet light contributes to
         | myopia[1]. There is abundant violet light outdoors.
         | 
         | [1] https://www.nature.com/articles/s41598-017-09388-7
        
       | rafaele wrote:
       | I wonder if they count staring at "n" screens for 1 hour as "n"
       | hours.
        
       | econcon wrote:
       | Important thing is, people don't just stare at screen. Many of
       | them achieve smth else too.
       | 
       | For example, last week I've probably spent 50 hours with people
       | front different parts of the word on screen.
       | 
       | Helping them turn waste plastic into 3D printing filament:
       | 
       | https://medium.com/endless-filament/make-your-filament-at-ho...
        
         | acituan wrote:
         | > last week I've probably spent 50 hours with people front
         | different parts of the word on screen
         | 
         | You've spent time with a _simulation_ of those people, their
         | voices lossily compressed with a biased frequency response,
         | their images projected through a non-eye lens on a 2D surface,
         | their heads bigger and closer than you would have in real life,
         | while rest of their bodies hidden, with hundreds of
         | milliseconds delay between interactions. Don 't get me wrong,
         | it is a very convincing and useful simulation for many
         | purposes, but it is a simulation nonetheless.
         | 
         | We might have overlooked this previously, but we will slowly be
         | gaining an understanding of the effects of sole social
         | interaction coming through videochat. I know for some, no
         | matter how many zoom calls they do a day, it doesn't come close
         | to creating the same relational satiety.
        
           | malwrar wrote:
           | Speaking personally, most of my good friendships growing up
           | (and even now) were with people online and they feel
           | perfectly fulfilling and real to me. I've been really
           | surprised to hear people (who seem to have been forced into
           | interacting with folks online because of covid) start popping
           | up claiming that online interactions aren't real and are
           | somehow invalid or inferior, as your post seems to imply. I
           | would have thought the presumably largely computer geek HN
           | crowd would be full of folks with similar experience.
        
             | acituan wrote:
             | > they feel perfectly fulfilling and real to me
             | 
             | That is the whole point of a simulation. Hyper-palatable
             | food, cocaine, porn etc. they also feel good and even
             | hyper-real in our nervous systems in the short term, but
             | that's not a good way to judge if they pose long term
             | complications. Though, I'm not saying video chat is
             | necessarily a hyperstimulus, we don't know yet.
             | 
             | > claiming that online interactions aren't real and are
             | somehow wrong
             | 
             | I'm not saying it is wrong, and in the absence of real
             | thing it is the rational thing to do. But thinking that it
             | is the real thing is kidding ourselves and to the extent it
             | replaces real life interactions, it could have long term
             | harm. I know this is not an exact comparison, but we have
             | already seen this with uni-directional audio-visual
             | entertainment replacing real relationship time. We feel
             | like our favorite youtubers, podcasters, netflix
             | protagonists etc are our friends, or at least relationally
             | worth investing time in (otherwise we wouldn't consume
             | them). Same might go with the 50 people around the world we
             | videochat.
        
               | quacked wrote:
               | If you've been reading Baudrillard, you might like the
               | blog The Last Psychiatrist, which is a less-rigorous,
               | more ironic take on a lot of similar ideas about
               | hyperreality.
        
               | acituan wrote:
               | I read both! Thanks! It's a shame The Last Psychiatrist
               | doesn't update anymore.
        
       | ngcc_hk wrote:
       | Collecting info, react to info, organise info, communicate info
       | etc.
       | 
       | Otherwise might as well say we look for our life. It is not
       | staring at. It is something else.
        
       | JSavageOne wrote:
       | Eye strain is a serious problem and actually becoming a
       | bottleneck for my productivity. Flux and dark-mode everything are
       | mandatory, and I recently bought blue-light filter glasses and
       | can't stare at a computer screen without them anymore. I had been
       | reading ebooks on my phone out of convenience, but I stopped due
       | to the eye strain and will revert back to using the Kindle.
       | 
       | If you spend the majority of your life staring at a screen, don't
       | take your eyesight for granted. As you age, it will deteriorate,
       | and it's really not fun, especially when your career/livelihood
       | depends on you being in front of a screen.
        
         | hrktb wrote:
         | I think we are all in the same boat. For me switching from
         | reading to hearing wherever the option makes sense helped a
         | lot.
         | 
         | Basic news coverage is fine in podcast form, audiobooks work
         | fine for non fiction (going at 2x or 3x speed doesn't kill the
         | atmosphere) and it makes a good excuse to exercise while
         | listening.
        
       | abstractbarista wrote:
       | Good thing I started out super far-sighted. If anything, my
       | vision has improved with time focusing on close screens. :P
        
       | mattlondon wrote:
       | 13 hours a day on average?
       | 
       | That seems quite high to me.
       | 
       | Assuming you sleep 8 hours, that only leaves 16 other hours for
       | potential screen time of which 13 we are apparently looking at a
       | screen. Lets assume another 30 minutes a day for getting washed &
       | dressed, bio-breaks, brushing teeth, preparing food + drink etc
       | (30 mins seems low, but I'm being generous), so 15.5 hours left.
       | 
       | So of all of our waking hours, we spend 13/15.5 = 84% of every
       | minute we are awake looking at a screen? 50 seconds of every 60
       | seconds staring at a screen?
       | 
       | Seems high to me.
        
         | MrZander wrote:
         | I can easily see myself hitting 12+ hours a day. 8 hours every
         | day at work, then an hour of TV, then a few hours on my PC at
         | home doing whatever. Plus, using my phone probably adds up to a
         | decent little chunk.
         | 
         | Weekends might drag the average down a bit though, spend much
         | less time in front of a screen on Saturday/Sunday.
        
         | karatestomp wrote:
         | I bet I'm around 12-13 hours more days than not. Maybe higher.
         | And my phone addiction/dependence is moderate compared to some
         | so it probably comes in a distant 3rd after laptop (easily #1)
         | and TV (all movies, shows, and video games combined)
         | 
         | > Lets assume another 30 minutes a day for getting washed &
         | dressed, bio-breaks, brushing teeth, preparing food + drink etc
         | (30 mins seems low, but I'm being generous), so 15.5 hours
         | left.
         | 
         | Laptop on the dresser/counter playing Youtube. Phones are
         | waterproof--read news or catch up on morning messages in the
         | shower. Laptops that aren't giant bricks and have battery life
         | good enough that you aren't constantly hunting for an outlet
         | and towing your power supply around, plus (even more so)
         | smartphones, have changed everything.
         | 
         | Also depends on how they're counting screen time. Kinda like
         | TV-watching stats. My parents leave their living room TV on
         | probably 15+ hours a day. Does that mean they're "watching TV"
         | if they're making lunch (good view of the TV from the kitchen)
         | but half paying attention to the TV? Or I've come over and
         | we're talking but the TV's on and you (or at least I) can't
         | _entirely_ ignore it?
        
         | PragmaticPulp wrote:
         | I agree. I track my screen time on my computer and mobile
         | phone. I feel like I have too much screen time, but there's no
         | way I could consistently hit 13 hours of screen time per day,
         | unless maybe I put TVs around my house to use as background
         | viewing while I do other work.
         | 
         | Even if I spend 10 hours at the office, it's a challenge to get
         | over 7 hours of screen time logged unless I actively avoid all
         | discussions, meetings, and eat lunch at my desk.
        
       | [deleted]
        
       | qubex wrote:
       | _The Onion_ was way ahead (as usual):
       | https://www.theonion.com/report-90-of-waking-hours-spent-sta...
        
       | Ididntdothis wrote:
       | Just my personal experience: i definitely notice my eyesight
       | getting worse and my eyes getting tired when I look at screens
       | for a while. Worst are phones , then iPad , then laptop. TV
       | causes me the least strain. I think it may have to do with the
       | viewing distance or the background light.
       | 
       | When I don't look at a screen for a few days while on vacation my
       | eyesight gets much better.
        
       | TheRealDunkirk wrote:
       | Pfft. Amateurs.
        
       | varshithr wrote:
       | If you are in IT, or any knowledge worker for that matter, do we
       | even have a choice?
        
         | M5x7wI3CmbEem10 wrote:
         | e-ink monitors?
        
       | mr_berna wrote:
       | Does staring at two screens at the same time count double? At
       | work as an iOS developer I look at two computer monitors, an iPad
       | screen and a phone screen. When I watch TV at night I'll look at
       | the TV and my phone. I'm sure I can get my count really high.
        
       | throwawaysea wrote:
       | Can we quantify the "net screen time" once we subtract away from
       | activities that took up time but have since been
       | replaced/optimized by automation?
       | 
       | But leaving that aside, the 34 years figure is understating the
       | true time spent. That figure is referring to 34 years of 24-hour
       | days. If we subtract 8 hours a day for sleep, it is actually 52
       | years of our waking hours.
        
       | ipnon wrote:
       | "If children get outside enough, it doesn't matter how much they
       | study they do. They don't become myopic," said Ian Morgan,
       | researcher at Australian National University.[0]
       | 
       | "Researchers say kids and teens need to get sunlight during the
       | critical years of their development while their eyeballs are
       | still growing.
       | 
       | "The mechanics of how sunlight protects their eyes are not
       | clearly understood. One theory suggests that sunlight triggers
       | the release of dopamine in the retina; another speculates that
       | blue light from the sun protects from the condition.
       | 
       | "The solution is simple. Have kids "spend more time outside, have
       | less demands (from) the schools and relax a bit," said Seang Mei
       | Saw, professor of epidemiology at the National University of
       | Singapore."
       | 
       | [0] https://www.cnn.com/2015/04/05/asia/myopia-east-
       | asia/index.h...
       | 
       | edit: quotation marks
        
         | saalweachter wrote:
         | I'm sure there is a correlation, maybe even a strong one, but I
         | have quite a bit of anecdata to suggest it is not true in all
         | cases.
         | 
         | (I grew up on a farm, and spent a helluva lot of time outside,
         | and needed glasses long before my family had a computer; my
         | father would have spent even more time outside than I did, and
         | likewise is pretty nearsighted.)
        
           | chansiky wrote:
           | What did you spend your time doing though? Did you read a
           | lot? Did you draw? Did you spend a lot of time working on
           | things within arms reach? Or did you spend your time staring
           | off into the far yonder? Isn't there a case to be made that
           | sunlight is more of a signal used to help the eyes learn to
           | focus and that by staring at something a foot away with low
           | signal strength the eyes never got the feedback necessary to
           | shape itself to the environment that it needs to work in?
        
             | saalweachter wrote:
             | Climbing trees, chasing livestock, running through fields,
             | catching frogs, rolling down hills, digging holes... ?
             | 
             | I was _outside_. If what a small child running around on a
             | farm for hours and hours every day, rain or shine, doesn 't
             | count as "being outside more", we need to start using a
             | different word to refer to that.
        
           | ipnon wrote:
           | The link references the rate of myopia in South Korea
           | increasing from 18% in 1955 to 96% in 2011. This suggests 2
           | things:
           | 
           | 1. Myopia is not entirely genetic, because genes for myopia
           | could not have spread to almost all Koreans from almost no
           | Koreans in the span of 56 years.
           | 
           | 2. Myopia is somewhat genetic, because myopia existed in a
           | significant proportion of the pre-industrial population.
        
             | javitury wrote:
             | > Myopia is somewhat genetic
             | 
             | That conclusion is can't be supported from the above fact
             | alone.
             | 
             | It could be a development disorder with a certain
             | probability of occurrence given other non-genetic factors.
             | 
             | Perhaps some pre-industrial people didn't get enough sun
             | time, because they spent too time at home reading. Others
             | had physical eye damage from work activities, etc.
        
             | saalweachter wrote:
             | Prefixing this with an acknowledgement that I totally
             | believe there was a change in the prevalence of myopia due
             | to changes in environmental conditions (amount of sunlight,
             | artificial lighting, etc etc)...
             | 
             | I _am_ curious whether 18% was the _diagnosed_ rate of
             | myopia in South Korea in 1955 or the _actual_ rate of
             | myopia in 1955.
             | 
             | In 1955 South Korea was a poor country; now it is one of
             | the wealthier countries (per capita) in the world. On the
             | one hand, it is entirely believable to me that access to
             | eye correction is radically greater than ~70 years ago, and
             | there was a lot of undiagnosed vision problems in 1955. On
             | the other hand, it's also entirely believable to me that
             | literally every 20 year old (male) was given a vision test
             | in 1955 in South Korea, because of the War. On the third
             | hand, it's _also_ entirely believable to me that the vision
             | test given was fairly easy to  "pass", and that a many of
             | the people who passed it would have a level of myopia that
             | we would now prescribe glasses for, because hey, better
             | vision is better.
        
           | filoleg wrote:
           | Had the inverse situation observed too. One of my friends has
           | been writing code intensely since at least the age of 11,
           | still spending tons of time in front of the screen. Never
           | needed glasses in his entire life. And then there is me, who
           | had very limited access to screen time as a kid, and I still
           | ended up needing glasses around the age of 15 (despite none
           | of my parents needing glasses, which goes to show that
           | "genetic" doesn't necessarily mean something as simple as
           | "your parents are this way, so you are bound to be the same
           | way").
           | 
           | I am not a doctor, but imo it is similar to a lot of other
           | health concerns. Predominantly genetic, but you can still
           | affect the outcome in slight ways and improve your chances a
           | bit.
           | 
           | Personal example: my grandfather who has been smoking at
           | least a pack a day since the age of 9, and he is still doing
           | way better in his 80s than majority of people his age.
           | Working in the garden (even physically demanding stuff, like
           | preparing the soil for potatoes every summer), fully mentally
           | sound, etc. On another hand, you have plenty of young people
           | who do everything right (no smoking, healthy diet, regular
           | proper exercise, etc.) falling due to random health ailments.
           | Which goes to show that while taking care of yourself is
           | important and beneficial, the luck of hand you got can
           | override it all in either direction at any moment.
        
           | pram wrote:
           | I agree. This is the first time I've heard of it. Literally
           | everyone in my family wears glasses, including my deceased
           | grandfather who lived into his 90s. He grew up in rural
           | Mexico without electricity so it absolutely couldn't have
           | been caused by TV or Computers
        
         | karatestomp wrote:
         | Meanwhile we put 5-6 year olds in kindergarten classrooms with
         | UV-blocking windows all day, for about 9 months during the part
         | of the year with the least sunlight available, and we've cut
         | recess time down to almost nothing, and schools increasingly
         | don't send kids outside if the weather's anything other than
         | perfect. At my kids' school they don't even have indoor recess
         | if they keep them in! They just watch a damn movie. WTF. Of
         | course there was some stupid educational fad that led them to
         | remove all the toys from lower-grade classrooms to make room
         | for "learning centers" (I gather this has happened more or less
         | state-wide), so I guess if the gym's not available they can't
         | really do indoor recess anyway, not that it helps their
         | eyesight either way. And this is a very highly-ranked school
         | for our state.
         | 
         | 1.5 hours of recess daily _minimum_ or bust for 3rd grade and
         | under, I say, and I think that 's not quite enough, really.
         | Screw this 30 minutes crap. Know how I can guarantee my kids
         | have behavior problems at home? Coop them up inside all day.
         | Know how I make a day run smoothly? Make sure they're outside
         | running around at least a couple hours while the sun's up. Then
         | consider that they're giving a bunch of them nearsightedness on
         | top of _definitely_ creating behavioral and learning problems.
         | It 's crazy.
        
           | ajmurmann wrote:
           | I think it's all a side effect of the treadmill that society
           | is putting everyone on. Between globalization and automation
           | there are fewer good jobs that more people are competing for.
           | Either you end up with what used to be a lot of money or way
           | too little. Till you "made it" you are constantly at risk at
           | slipping off the treadmill and into the "way too little"
           | group. Especially in the US.
           | 
           | May this be reality or not, it's the experienced reality for
           | many. We feel so much pressure to give our kids a head start
           | which results in this rat race starting earlier and harder. I
           | think this is just collateral damage from that shit going
           | wrong. I'm so glad I was a kid in the 80s when playing
           | outside was still normal.
        
             | karatestomp wrote:
             | We let ours play outside plenty, and there are quite a few
             | other kids out. Does seem to be neighborhood-dependent,
             | though, all kinda have their own culture. Our current one's
             | less free-range than the last, which had big ol' gangs of
             | kids with large age-ranges roaming around, and was great.
             | 
             | We _are_ fairly worried about 1) eventually having some
             | kind of encounter with child protective services--which
             | will likely end up fine, if it happens, but will also
             | probably be really inconvenient and stressful--and 2)
             | injuries that end up giving us yet another opportunity to
             | play everyone 's favorite game, Medical Billing Roulette,
             | especially now that they're riding bikes. Multiple kids,
             | just a matter of time until one of them get a hospital trip
             | out of a bad fall. Odds very low they'll all make it to 18
             | without at least one broken bone.
             | 
             | God damn do I wish we'd fix healthcare in the US. It's
             | crazy how much background stress & anxiety that causes
             | across just about all activities and choices. And that's
             | _with_ insurance.
             | 
             | [EDIT] although I'm pretty sure the "playing outside" thing
             | tapers off around tween/teen ages in a way it didn't for
             | us, when they all start living on social media. :-/
        
         | jayd16 wrote:
         | Nah, just Flux in more blue light during the day. /s
        
         | dannyw wrote:
         | Does anyone know if this also applies for people in their early
         | 20s? Of course more sunlight and exercise never hurts, but I'd
         | be more compelled if there's scientific evidence that it stops
         | myopia progression.
        
           | 1e-9 wrote:
           | Yes[1].
           | 
           | [1] https://www.nature.com/articles/s41598-017-09388-7
        
           | jeffreyrogers wrote:
           | Anecdotally I had great vision (20/15) before starting
           | college. Before I went to college the eye doctor said not to
           | bother coming back until I got married. After 3 years of
           | looking at a screen in the dark I needed glasses.
        
       | ashleshbiradar wrote:
       | "screen time" is too broad a term and is too often described as
       | something bad. But we need to understand screens are more like
       | papers, and what we consume off the paper is what matters.
        
       ___________________________________________________________________
       (page generated 2020-05-20 23:00 UTC)