Slashdot Mirror


The Goggles, They Do Nothing

Suchetha writes "In anticipation of a slow news day i would like to direct the Slashdot hordes to Akiyoshi Kitaoka's Optical Illusions page. The page also has explanations on why/how they occur (in icky PDF format). The page is on a .jp uni server so they SHOULD be able to handle the herd of rhinos that is ./."

321 comments

  1. Coral Cache Link! by Anonymous Coward · · Score: 5, Informative

    Use the cache so more people can see! Thanks!

    1. Re:Coral Cache Link! by deragon · · Score: 1

      That link causes Mozilla 1.6 to crash! Do more recent versions of the browser have the same bug?

      --
      Remember the year 2000? They promised us flying cars. They delivered the PT Cruiser...
    2. Re:Coral Cache Link! by Anonymous Coward · · Score: 0

      Works fine in Firefox 0.10.1.

    3. Re:Coral Cache Link! by mixmasterjake · · Score: 1

      is it just me or does nyud.net rarely work?

      either way, beware of that page - the images are really cool but after about 5 minutes i got a minor headache from looking at them.

      --
      TODO: come up with a clever sig
    4. Re:Coral Cache Link! by orkysoft · · Score: 3, Funny

      Yeah, that smoking hole in their server room doesn't look like an optical illusion...

      --

      I suffer from attention surplus disorder.
    5. Re:Coral Cache Link! by Anonymous Coward · · Score: 1, Informative

      Works fine in 1.7

    6. Re:Coral Cache Link! by Anonymous Coward · · Score: 1, Funny

      Doesn't that defeat the point of the Slashdot hordes?

    7. Re:Coral Cache Link! by PKPerson · · Score: 0

      Ovbiously /. can cary the load, so slashdot should offer to mirror web pages and images from the /.ed servers while there down.

    8. Re:Coral Cache Link! by Anonymous Coward · · Score: 1, Informative
    9. Re:Coral Cache Link! by ZB+Mowrey · · Score: 1

      So you're saying that four (4) years isn't enough time to think it through in detail and begin some kind of beta program (maybe only for slashdot subscribers, limited participation thing)?

      --

      Self-referential sigs are rarely entertaining.

    10. Re:Coral Cache Link! by G-funk · · Score: 2, Insightful

      Goddammit I wish somebody would update snpp, wolfcastle says "The goggles do nothing!", not "The goggles, they do nothing!"

      *apologies for the hj*

      --
      Send lawyers, guns, and money!
    11. Re:Coral Cache Link! by Gherald · · Score: 1

      Or perhaps a small mirror link that links to a cover page that says "last update xxx:xxx:xxx, use at your own discretion"

  2. Interesting warning on the site... by daveschroeder · · Score: 4, Informative

    Caution: This page contains some works of "anomalous motion illusion", which might make sensitive observers dizzy or sick. Should you feel dizzy, you had better leave this page immediately.

    Some of the pictures on this website can cause dizziness or might possibly epileptic seizures. The latter happens when the brain can't handle the conflicting information from your two eyes. If you start feeling unwell when using this website, immediately cover one eye with your hand and then leave the page. Do not close your eyes because that can make the attack worse.

    1. Re:Interesting warning on the site... by Gannoc · · Score: 5, Funny

      Some of the pictures on this website can cause dizziness or might possibly epileptic seizures.

      FINALLY, a web page that can kill! Its like one of those crappy movies from 1994 when the net seemed super-cool to Hollywood.

      "Slaughter.org: The Cyberkiller"

      "Jenny! Don't click on that hyperlink!"
      "Oh noze! She has been capslocked by the optical illusions! When the machine boots, it will lock down her mind forever!"
      "I can't reach the caps lock key!"
      "We'll have to hit the caps lock key... IN VIRTUAL REALITY!"

    2. Re:Interesting warning on the site... by Have+Blue · · Score: 4, Funny

      I guess this guy is rich and famous now.

    3. Re:Interesting warning on the site... by linguae · · Score: 2, Funny
      Caution: This page contains some works of "anomalous motion illusion", which might make sensitive observers dizzy or sick. Should you feel dizzy, you had better leave this page immediately.
      It must be a good thing that I didn't RTFA before reading the comments....
    4. Re:Interesting warning on the site... by Anonymous Coward · · Score: 3, Funny

      What is it with the Japanese and seizures? First it was Pokemon, now this. OK - that's only two examples, but I'm still convinced that they love their seizures.

    5. Re:Interesting warning on the site... by nxtr · · Score: 0

      "We'll have to hit the caps lock key... IN VIRTUAL REALITY!" If she was running Windows, she could've used the on-screen keyboard. I don't like this movie anymore.

    6. Re:Interesting warning on the site... by attam · · Score: 2, Interesting

      The latter happens when the brain can't handle the conflicting information from your two eyes

      I didn't realize this was the cause of seizure fears. I happen to be completely blind in one eye, does this mean I don't need to worry about getting seizures from this sort of thing? If so, that's an interesting bit of news I never heard of... perhaps even the first (only?) perk of being half blind.

    7. Re:Interesting warning on the site... by sploo22 · · Score: 0, Offtopic

      Sort of reminds me of COMP.BASILISK.

      --
      Karma: Segmentation fault (tried to dereference a null post)
    8. Re:Interesting warning on the site... by at_slashdot · · Score: 2, Funny

      I was thinking to put a huge poster like this in my room to make my guests sick, but than I realized that my room would make any "potential" guest sick anyway.

      --
      "It is our choices, Harry, that show what we truly are, far more than our abilities." -- Prof. Dumbledore
    9. Re:Interesting warning on the site... by Feztaa · · Score: 1

      Wouldn't it also mean that you can't see the "illusion" at all? I'd be interested to know if the images still appear to wobble and roll and such when you look at them.

    10. Re:Interesting warning on the site... by shnarez · · Score: 1
      FINALLY, a web page that can kill! Its like one of those crappy movies from 1994 when the net seemed super-cool to Hollywood.
      No, it's more like Snow Crash by Neal Stephenson. See also Slashdot review.
    11. Re:Interesting warning on the site... by attam · · Score: 3, Interesting

      they sure do! i didn't know if they would (i can't see those cool 3d effects with the glasses, since those require your brain to coprocess the difference between two images). apparently these illusions are based upon something different. probably just perspective.

    12. Re:Interesting warning on the site... by The+Snowman · · Score: 3, Insightful

      Wouldn't it also mean that you can't see the "illusion" at all? I'd be interested to know if the images still appear to wobble and roll and such when you look at them.

      You could always test that out by closing one of your eyes ;)

      --
      24 beers in a case, 24 hours in a day. Coincidence? I think not!
    13. Re:Interesting warning on the site... by has2k1 · · Score: 2, Funny

      Akiyoshi Kitaoka looks nerdy with those titanic size spectacles. After all that work, wouldn't it be an incredible feat if he didn't have any glasses at all.

    14. Re:Interesting warning on the site... by Short+Circuit · · Score: 4, Funny

      There was a time when I wished the FBI would go around seizing Pokémon momentos...

    15. Re:Interesting warning on the site... by chewy_2000 · · Score: 1

      I've got a poster of something very similar to Rotating Snakes. Mostly it's interesting to look at when I'm bored, but it can be nasty after a cone or two.

    16. Re:Interesting warning on the site... by Alioth · · Score: 1

      Curious question - if you play 3D games (such as Doom, UT or maybe a flight sim etc.) - do you get a very strong 3D effect? I find these games seem to have "real" 3D depth if I close one eye - sort of the 'poor man's 3D goggles'. The effect occurs not if looking at a still image, but as soon as movement occurs (it's like magic - a flat picture suddenly goes 3D when it moves, I suspect from the parallax effect)

    17. Re:Interesting warning on the site... by attam · · Score: 1

      well, i dont really have anything to compare to, right? i wouldn't really know what "strong 3D effect" entails, since i've never really experienced it. i do get a sense of depth from these games, however. it definitely "feels" 3D to me.

    18. Re:Interesting warning on the site... by orkysoft · · Score: 1

      If you were to browse at -1, you'd find lots of links to images that make you sick.

      --

      I suffer from attention surplus disorder.
    19. Re:Interesting warning on the site... by Feztaa · · Score: 1

      Didn't occur to me until after I hit submit ;)

    20. Re:Interesting warning on the site... by jonadab · · Score: 1

      > Everything is more fun naked except cooking with grease.

      For example: making snow angels. Also, installing fibreglass insulation.

      --
      Cut that out, or I will ship you to Norilsk in a box.
  3. The goggles! They do nothing! by Anonymous Coward · · Score: 0

    Shouldn't this be posted on it.slashdot.org?

  4. Heh by thewldisntenuff · · Score: 3, Funny

    The page is on a .jp uni server so they SHOULD be able to handle the herd of rhinos that is ./.

    He should have called us a "herd of nerds" :)

    -thewldisntenuff

    1. Re:Heh by Anonymous Coward · · Score: 2, Funny
      He should have called us a "herd of nerds" :)
      I think the correct term is a "hurd of gnerds."
    2. Re:Heh by Raynach · · Score: 1

      I think some nerds don't want to be associated with a herd of any kind.

      --
      - A
    3. Re:Heh by EmbeddedJanitor · · Score: 1
      True. Rhinos are notoriously thick skinned, unlike our nerdmates.

      Rhinos though are also notoriously blind so probably won't get their kicks from visual images.

      --
      Engineering is the art of compromise.
    4. Re:Heh by shadowbearer · · Score: 1


      Here I thought we were "Mongel Hordes".

      Sheesh. Rhinos, indeed.

      I feel insulted.

      SB

      --
      It's old. The more humans I meet, the more I like my cats. At least they are honest.
    5. Re:Heh by Anonymous Coward · · Score: 0

      I thought it was a gaggle of nerds...

    6. Re:Heh by xgamer04 · · Score: 1

      I don't know why I remember this, but when I was in Elementary school, a friend of mine drew a comic that included a "character" known as the Nerd Herd.

      --
      When you look at the state of the world, how can you not become a radical, liberal anarchist?
    7. Re:Heh by White+Roses · · Score: 1
      The collective for nerds should be a "calculation," as in "a calculation of nerds."

      Or possibly a "trek." I've also heard "snit."

      This one is fun, a joxquiz.

      Or perhaps we should just call ourselves "a slashdot of nerds."

      --
      Do not touch -Willie
  5. Ach my eyes! The Goggles, they do nothing! by AndyFewt · · Score: 1

    Where is fallout boy?!

    1. Re:Ach my eyes! The Goggles, they do nothing! by Anonymous Coward · · Score: 0

      Only fallout buy can save me now.....
      "uh oh"

  6. Temping fate. by DAldredge · · Score: 3, Funny

    It's nearly dead. That is what you get for tempting fate in your fscking summary. ;->

  7. irony: by Anonymous Coward · · Score: 2, Funny

    "Nothing for you to see here. Please move along."

  8. dotslashdot? by kagelump · · Score: 1, Insightful

    they SHOULD be able to handle the herd of rhinos that is ./.

    you mean /.. , right?

    1. Re:dotslashdot? by hoborocks · · Score: 1

      welll.....hit up a *nix box, ./ = /. ...so this site could really be called "dotslash.org"... which doesn't really have the same ring to it.

      --
      AccountKiller
    2. Re:dotslashdot? by ragnarok · · Score: 1

      only if the current directory is /

      Besides the site name is supposed to be a play on words, try pronouncing the url some time. It has nothing to do with directory structures.

      --
      Search first, ask questions later.
    3. Re:dotslashdot? by Anonymous Coward · · Score: 0

      Ha Ha, you g0t pwn3d by a four digit!

    4. Re:dotslashdot? by Bri3D · · Score: 0, Troll

      Unlike you, he uses this new thing called GRAMMAR, which involves placine periods at the end of sentences.

      I am not responsible for mistakes in grammar in the above post.

    5. Re:dotslashdot? by Anonymous Coward · · Score: 0

      What about spelling?

    6. Re:dotslashdot? by Kinkify · · Score: 1

      He kept ./. because ./. kind of looks like a crooked penis and crooked penises look funny. ./. See?

    7. Re:dotslashdot? by Anonymous Coward · · Score: 0

      ...///... said the server.

      (Morse code joke)

  9. Exploratorium by Jadsky · · Score: 4, Interesting

    Some of these are on display on out-of-the-way doors in the Exploratorium science museum in San Francisco. It looked like some of the staff members had printed them out and posted them there for their own personal satisfaction, but a lot of the visitors were finding themselves distracted from the bigger attractions to stare at these.

    It was trippy to have the spinning snakes one as my wallpaper for some time, but at six by four feet, it really does begin to make you a little dizzy.

  10. Stuff that matters by SoCalAndy · · Score: 0

    I thought it was News for Nerds. Stuff that matters, not Stuff to distract me on a Sunday afternoon.

  11. amazing by antani · · Score: 3, Funny

    let's try ascii art .o. o.oo .o. o.
    . o.o.. o.o .o o.

    if you shake your head you can see the dots moving!
    and no headache! w00t!

    sure, today is a slow news day, what boring. gee.

    1. Re:amazing by lordsilence · · Score: 1

      Say.. how many actually tried this (even if it's obviously silly and can hardly be called art)? ;)

    2. Re:amazing by Anonymous Coward · · Score: 1, Funny

      The one I personally love is to get your favorite vibrating instrument and place it in your mouth(personally I prefer an electric toothbrush, though others may have slightly, *cough*, different tastes), then stare at a digital LED clock face for jumping number fun.

    3. Re:amazing by Anonymous Coward · · Score: 0

      I did ;)

    4. Re:amazing by rootofevil · · Score: 1

      im not afraid to make myself look like a bigger idiot and say i did. it was pretty cool.

      --
      turn up the jukebox and tell me a lie
    5. Re:amazing by builderbob_nz · · Score: 1

      if you shake your head you can see the dots moving!

      Didn't work, my eyes keep focusing on them and holding them still. As for the headache, have special glasses for that so no real issue.

      --

      Karma? Hey I just call it as I see it.
    6. Re:amazing by Anonymous Coward · · Score: 0

      LOL!

    7. Re:amazing by irc.goatse.cx+troll · · Score: 1

      Works with eating chips also.

      --
      Pain lasts, kid. Its how you know you're alive. Sometimes I think this growing up thing is just pain management-TheMaxx
  12. Mirror by alienfluid · · Score: 5, Informative

    Here here

    1. Re:Mirror by sabNetwork · · Score: 4, Funny

      Damn.

      I read your subject and I was hoping for the optical illusion of a mirror.

      Alas, it was only a copy of the website.

      --

  13. /.ed by m_c_rose · · Score: 2, Funny

    "The page is on a .jp uni server so they SHOULD be able to handle the herd of rhinos that is ./." Or Not.

    1. Re:/.ed by Mekabyte · · Score: 1

      The website, it does nothing.

    2. Re:/.ed by arodland · · Score: 1

      Read more carefully before you make biting remarks. The comment made speculation not on the site's ability to withstand a slashdotting, but on its ability to withstand a dotslashing.

  14. sweet christ by Anonymous Coward · · Score: 5, Funny

    I'm in cafe nursing a severe hangover. That shit almost made me yak all over my laptop.

    1. Re:sweet christ by Fjornir · · Score: 1

      Don't click the goatse!

      --
      I want a new world. I think this one is broken.
    2. Re:sweet christ by Lispy · · Score: 1

      I know what you mean. My stomach is turning. I celebrated my birthday yesterday.

    3. Re:sweet christ by Anonymous Coward · · Score: 0

      Really? Because I hear Microsoft is looking for image consultants to design their next desktop layout.

  15. Dizzy by FiReaNGeL · · Score: 1

    Hmmmm new wallpaper... :) Imagine your whole house (exterior and interior!) with wallpaper like that...!

    Interesting stuff, but sadly nothing new really :( Slow news day they say?

    1. Re:Dizzy by mindriot · · Score: 1

      You mean a Beowulf cluster of optical illusions?

      Forgive me.

    2. Re:Dizzy by Anonymous Coward · · Score: 0

      It would be awesome to uniformly cover your bathroom walls (and maybe more) with those disorienting images. You would have to include the floor and ceiling as well. Imagine the fun when you or one of your house guests is not feeling so well.

      I can only imagine the nightmare that would be when you drink to much, the room is spinning, you're laying on the floor of the bathroom and cannot move, on the virge of consciousness and on the virge of death, needing to hurl. Hopefully you have a close friend to come kick you in the balls while you're laying there incapacitated. Such great experiences and memories we can build in our youth. Homework? what's that? I hate math. See you at the party.

    3. Re:Dizzy by jonadab · · Score: 1

      > Hmmmm new wallpaper

      Hmm... now I know what practical joke to play in the office on April 1.

      --
      Cut that out, or I will ship you to Norilsk in a box.
  16. Re:Heh, er... by EtherAlchemist · · Score: 0


    ... what the hell is a ".jp uni server" and why is pdf icky?

    --
    R(k)
  17. Only because its a university domain.... by imsabbel · · Score: 1

    doesnt mean its just running on some guys pentium2 in his office. /. to hell, btw.

    --
    HI O WISE PRINCE. WHT TOOK U SO DAM LONG?
    1. Re:Only because its a university domain.... by Nos. · · Score: 1, Informative

      Considering its static HTML (the main page) there's no reason an older machine can not stand up to a slashdotting. When we /. something is usually for one or two reasons, the most common being the pipe is full. The other reason is overloading the server (when we see things like too many mysql connections) . Rarely does the server itself actually die. I've had a PII 600 with about 256MB server several thousand hits per hour and never see the load average climb above .5, and this is php/mysql generated pages.

    2. Re:Only because its a university domain.... by imsabbel · · Score: 1

      The problem with that side (i have it in my bookmark for a few years already) is that its PLASTERED with high res gifs and jpeg. like 200-300k.
      IF its just on a 10Mbit line, like older offices usually are, its goint to hell...

      --
      HI O WISE PRINCE. WHT TOOK U SO DAM LONG?
    3. Re:Only because its a university domain.... by shadowbearer · · Score: 1


      It must be in the Slow Zone, automation just doesn't work so well down there... :)

      SB
      PS thanks for your suggestion DITS & FOTD, you were right.

      --
      It's old. The more humans I meet, the more I like my cats. At least they are honest.
    4. Re:Only because its a university domain.... by Anonymous Coward · · Score: 0

      Wow, that explains so well why I have trouble thinking clearly when I'm at the office. It must be a slow zone! It's so obvious now, just dumb luck that I happened to read your comment at home... The same thing could probably explain the existence of PHBs...

  18. Question by RiotXIX · · Score: 4, Interesting
    Is staring at these bad for your eyes? Ie. More than staring at a normal picture for say, one minute?


    Because I could...nay..have found myself staring at these for periods, and assummed I will get a bit of headache, of that they are bad for my vision (thus forcing myself to stop).

    --
    "You know you don't act like a scientist, you're more like a game show host." Dana Barret
    1. Re:Question by LiquidCoooled · · Score: 1

      I get similar concerns when looking at glowsticks.

      I am reminded of the people standing on the rooftops looking through the cracks in the cherbobyl reactor and wowing at its strange glow.

      Sends a shiver down my spine every time.

      --
      liqbase :: faster than paper
    2. Re:Question by LiquidCoooled · · Score: 1, Offtopic

      Of course, I meant Chernobyl.

      Heres a link to the motorbike girl photo set where its described.

      http://www.kiddofspeed.com/chapter19.html

      --
      liqbase :: faster than paper
    3. Re:Question by Anonymous Coward · · Score: 0

      Psst, it's a hoax.

    4. Re:Question by Anonymous Coward · · Score: 1, Interesting

      Seems unlikely it could cause any irreversible changes to your eyes, but there's no guarantee that it won't cause any changes to the way your brain processes visual information. Those images mess with pattern recognition in a "Wow, look what it does when we give it this!" kind of way.

      If you looked at the rotating snakes long enough for your brain to figure out that none of those shapes were moving after all (assuming that it eventually would) that might not be such a good thing.

    5. Re:Question by Anonymous Coward · · Score: 0

      The McCoullough effect messes with pattern recognition. It's not permanent, but it lasts quite a few hours. Give it a try, it's perfectly safe.

    6. Re:Question by Anonymous Coward · · Score: 0

      those rotating snakes makes a nifty background image !!!

  19. .jp servers... by ltwally · · Score: 0, Redundant
    The page is on a .jp uni server so they SHOULD be able to handle

    It's been posted on /. for less than 20 minutes and it's already /.'d. So much for Japanese immunity to the /. effect.

    --



    /dev/random
  20. Answer by Anonymous Coward · · Score: 3, Funny

    Yes, your eyes will shortly fall out of their sockets.

    Hopefully you're able to read this before that happens.

  21. I know a certain coworker... by Anonymous Coward · · Score: 4, Funny

    ... who is coming in to a new background image on their machine.

  22. Google Image Search has some copies by billstewart · · Score: 3, Informative

    Some of these images have been copied elsewhere. Google Image Search shows some of the pictures, such as rotsnake2.gif

    --

    Bill Stewart
    New Fast-Compression-only CPR http://preview.tinyurl.com/dy575ks
    1. Re:Google Image Search has some copies by MikeDX · · Score: 5, Funny

      Ah, so The Googles, They Do Something!

    2. Re:Google Image Search has some copies by Red+Pointy+Tail · · Score: 0, Offtopic

      Heh, that's funny. Someone mod parent up!

    3. Re:Google Image Search has some copies by billstewart · · Score: 1

      Yeah, I'm glad somebody else thought of it and posted it - I realized the joke a few minutes after my original posting, but following up my own post would have been tacky :-)

      --

      Bill Stewart
      New Fast-Compression-only CPR http://preview.tinyurl.com/dy575ks
  23. arg. should read: by imsabbel · · Score: 1

    doesnt mean it ISNT just running...

    --
    HI O WISE PRINCE. WHT TOOK U SO DAM LONG?
  24. Appropriate Penny Arcade Reference by Vaystrem · · Score: 2, Insightful

    "The page is on a .jp uni server so they SHOULD be able to handle the herd of rhinos that is ./."

    Baby vs Rhino.

    That baby... er server doesn't have a prayer.

    1. Re:Appropriate Penny Arcade Reference by Anonymous Coward · · Score: 0

      ...Once again proving that Penny Arcade is never funny.

    2. Re:Appropriate Penny Arcade Reference by ratsnapple+tea · · Score: 1

      Is that supposed to be funny? It's even worse than most Penny Arcade strips.

  25. Re:Heh, er... by ilikejam · · Score: 1

    Chairs are for sitting, PDF is for printing
    And a Japanese University server is probably quite likely to be able to handle a Slashdotting (although it looked like it was feeling the strain when I clicked through).

    --
    C-x C-s C-x k
  26. Re:Heh, er... by Schreckgestalt · · Score: 2, Funny
    ... what the hell is a ".jp uni server"

    that would be a japanese university server. you must be american.

  27. MY EYES!!!!!!!! by shockingbluerose · · Score: 1

    Yeeeeeeek the pain! It really hurts my brain to look at this stuff, but at the same time it's awesome! Thanks for shareing. It isn't as bad as the ones they have at the museaum.

    --
    My name is a variety of floral rose, and no, it's not blue :)
    1. Re:MY EYES!!!!!!!! by Anonymous Coward · · Score: 0

      I accidently clicked on one of those trick redirect links some dudes post here... man, that was like going to the nauseum!

  28. Re:Heh, er... by Fulcrum+of+Evil · · Score: 1

    what the hell is a ".jp uni server" and why is pdf icky?

    Japanese University. As for the pdf, michael has a grudge agaisnt Adobe or something. Who knows, who cares?

    --
    "We returned the General to El Salvador, or maybe Guatemala, it's difficult to tell from 10,000 feet"
  29. Slashdotted - Mirrors Here by Kinetic · · Score: 2, Informative

    As always, mirrors are here: MirrorDot.

    --
    ~Jay
    1. Re:Slashdotted - Mirrors Here by suwain_2 · · Score: 1

      The background on that site hurts my eyes more than the images on that guy's site.

      --
      ________________________________________________
      suwain_2 :: quality slashdot p
  30. Re:Heh, er... by WhiteDragon · · Score: 1

    jp uni means a university in Japan, and pdf is icky because it is a cross-platform well defined spec that produces beautifully printed output. Oh wait... :P (just don't get the adobe plugin anywhere near any of my browsers; I'll download it, and I don't even mind viewing it with Adobe Reader or Acrobat reader, but the plugins always seem to crash any browsers I use (MSIE, Firefox, Netscape, etc))

    --
    Did you mount a military-grade, variable-focus MASER on an unlicensed artificial intelligence?
  31. Re:Heh, er... by Mac+Degger · · Score: 1

    .jp means it's a japanese. A uni server means the server is part of a university, which are always connected to very high-bandwidth internet connections (the proverbial 'phat pipes'). And pdf's are icky becuase they're a closed format which take up too much space, are reader-unfriendly and are only suitable to print...and seeing as we're on the internet and like tree's, why post stuff you wanna read once and then forget in a format meant to be printed?

    --
    -- Waht? Tehr's a preveiw buottn?
  32. Once the /.ing's over by Dominic+Burns · · Score: 2, Interesting

    Check out the awesome images of Japan/Kyoto. IMNSHO, they're far more interesting than the optical illusion stuff.

    Thanks for making them available, Mr Kitaoka.

  33. In anticipation of a slow news day . . . by MinimeMongo · · Score: 2, Interesting

    I would like to Slashdot a server that hosts a large number of images. That should spice things up.

  34. Re:Heh, er... by Anonymous Coward · · Score: 0

    One clue for you.
    xpdf

  35. Beer goggles have helped me... by Anonymous Coward · · Score: 0

    Of course, I had to chew my arm off in the morning, so maybe it wasn't helped

  36. Sigh by quantaman · · Score: 1, Informative

    Only on /. does a Simpson's quote get mangled in the headling.

    For future reference,

    My Eyes! The goggles do nothing!

    --
    I stole this Sig
    1. Re:Sigh by Anonymous Coward · · Score: 2, Informative

      Actually, the quote is:
      "Ach, mein eyes! The goggles, they do nothing!"

    2. Re:Sigh by Anonymous Coward · · Score: 0

      It's that episode where Radioactive Man is tied to a pole during a movie shoot, and he get's a wave of acid on him right?

    3. Re:Sigh by Anonymous Coward · · Score: 0
    4. Re:Sigh by Anonymous Coward · · Score: 0

      Actually, the quote is:
      "Ach, mein eyes! The goggles do nothing!"


      Watch it again.

    5. Re:Sigh by Anonymous Coward · · Score: 0

      http://www.matthewbarr.co.uk/sounds/goggles_nothin g.wav

  37. Re:Slow news day? by Anonymous Coward · · Score: 0

    no he is just looking at picture 6 and assumes he can see into the future. was still workign for me by the way, slow but would have only taken 10min to load if i had not decided to use a mirror.

  38. Obligatory Simpsons Reference by qedigital · · Score: 0, Redundant

    Rainier Wolfcastle (As he is hit by a tidal wave of acid) : "My eyes...the goggles do nothing!"

    Episode: Radioactive Man (Season 7)

    --

    Rapidly approaching the Zener knee...

  39. FYI: "The goggles do nothing" by etaluclac · · Score: 0, Redundant

    The title is a classic Simpsons reference. Rainer Wolfcastle stars in a movie as radioactive man where Milhouse has to save him. As acid comes directly at him, the imitation Schwartzenegger screams, "My eyes...the goggles do nothing!" http://www.fact-index.com/m/mc/mcbain__the_simpson s_.html

    1. Re:FYI: "The goggles do nothing" by Anonymous Coward · · Score: 0

      The least you could do is link to Wikipedia instead of a mirror... http://en.wikipedia.org/wiki/McBain_(The_Simpsons)

  40. Dale Purves at the Duke Medical Center by maceo1023 · · Score: 5, Interesting

    The laboratory of Dale Purves at the Duke University Medical Center is also researching visual illusions. Check out www.purveslab.net for interactive animations (yes, it's a Flash site).

    He's also written a book entitled Why We See What We Do: An Empirical Theory of Vision.

    1. Re:Dale Purves at the Duke Medical Center by jshaw · · Score: 1

      I had to take screenshots and check the colors with The GIMP... That's unbelievable.

      --
      My indecisivenessism has reimpacted my career-action-path to include a short-timeness as a PHB.
  41. Re:Slow news day? by Anonymous Coward · · Score: 0

    This is a tech site. Most /. stories are about a new chip some company launched or what have you. This usually doesn't happen on Sunday.

  42. Re:Slow news day? by DarkMan · · Score: 1

    I read that as the submitter knew that the web page was not time sensitive (i.e. it will be as interesting to see for the first time next week as it is to see for the first time today).

    Therefore, it is a good one for the editors to hold in reserve, for when there are few topical stories, rather than have either few stories or some naff ones.

    It appears that the editors chose not to follow the advice, (as is thier want)

  43. Re:Slow news day? by ylikone · · Score: 1

    "Pardon me, but isn't news something that isn't known yet?"

    Umm, no, news is something that is currently happening or has already happened. Something that isn't known yet is the future, not news.

    --
    Meh.
  44. now that is crazy by Trepidity · · Score: 1

    I've never seen anything like that before. Most optical illusions involve misjudging sizes or perspective due to relative proximity to confusing cues, or flipping back and forth between two difference scenes with ambiguous figure/ground. But I've never seen one that makes static things look like they're moving. Anyone have any info on the science behind these? What makes that happen?

    1. Re:now that is crazy by kagelump · · Score: 2, Informative
    2. Re:now that is crazy by mamba-mamba · · Score: 1

      Even though the hyperlink says explanation, it isn't really an explanation.

      Here is a quote:
      "Although this study only reveals phenomenological or design rules to obtain the peripehral drift illusion with large illusion magnitude, we are seeking an explanation on the basis of motion detector models."

      In other words, there is no explanation, just a set of rules to help generate a more powerful illusion.

      MM
      --

      --
      By including this sig, the copyright holders of this work or collection unreservedly place it in the public domain.
    3. Re:now that is crazy by Anonymous Coward · · Score: 0

      Anyone have any info on the science behind these? What makes that happen?

      gee i don't know......

      maybe becouse it is you mind that sees the world and not just light hitting eyes.

      What you see in the world is not just a perfect steril blank slate...you mind is set up to accept cues for things like motion, shape, horizon, faces(ever see jesus in your carpet), dimension, etc.

      it is sort of like how most animals cannot recognize them selves in the mirror ....or watch and gain information from TV...it is not that their eyes do not see it...it is just there minds do not interpret it to any coherant image.

      that last point i am not perfetly sound with but I am sure you get the gist anyway.

      stendec@gmail.com

  45. cause and effect by Anonymous Coward · · Score: 0

    "The page is on a .jp uni server so they SHOULD be able to handle the herd of rhinos that is ./."

    Yes, but little did you know that the herd of slashdotters you redirected would lead to the undersea cables vibrating at a harmonic frequency which would then attenuate the tiny earthquake starting on a loadbearing undersea mountain chain, but I found it in the Google cache! Isn't technology wonderful?

  46. Re:Slow news day? by avalys · · Score: 0, Offtopic

    He submitted it a while ago for the Slashdot editors to hold onto and post when a slow news day (like today) comes around.

    The editors probably should've removed the first few words from the article summary, but oh well...

    --
    This space intentionally left blank.
  47. What's wrong with PDF? by Anonymous Coward · · Score: 0

    Open format, multiple open-source implementations, good featureset, good file size when used correctly, wide adoption, convenience- it may not be perfect, but what's so icky about it?

    1. Re:What's wrong with PDF? by rco3 · · Score: 1

      Thank you. I was wondering that myself.

      --

      Ce n'est pas un vrai mouvement de robot!
  48. thanks by Trepidity · · Score: 1

    I was looking at the image on a cache, so didn't see the PDF link.

  49. No vector files? by Frappuccino · · Score: 4, Informative
    The guy took off the download page for the vector files because too many people were illegally using the files. So what if I wanted to download the Adobe Illustrator file of the roating snakes to print out a giant poster on my Epson 7600?

    Archive.org to the rescue!

    http://web.archive.org/web/20031203215948/www.psy. ritsumei.ac.jp/~akitaoka/download.html/

    This will probably get slashdotted really quick because the archive.org servers are already slow. Someone make a mirror of this page quick so everyone can have a piece!

    1. Re:No vector files? by Frappuccino · · Score: 1
      Ok, this this won't let me link directly to archive.org to the wayback page. Go to archive.org and type in the address, use the Dec. 2 2003 version. The download page is on there and working.

      sorry about that!!!!!

  50. PDF doesn't suck. by 1010011010 · · Score: 2

    It's excellent for what it does, and it beats the pants off Word .doc format as a distribution format.

    --
    Napster-to-go says "Fill and refill your compatible MP3 player", which is a lie. It's not MP3. It's WMA with DRM.
    1. Re:PDF doesn't suck. by wombatmobile · · Score: 1

      PDF doesn't suck

      Are you sure?

    2. Re:PDF doesn't suck. by Dun+Malg · · Score: 1
      PDF doesn't suck. It's excellent for what it does, and it beats the pants off Word .doc format as a distribution format.

      PDF sucks for stuff nobody is going to print out, like a WEB PAGE!. Or are you one of those guys who makes his secretary print out his emails for him to read.

      --
      If a job's not worth doing, it's not worth doing right.
    3. Re:PDF doesn't suck. by CodeMunch · · Score: 1

      but in the context of a page on the net, it does suck. As would a .doc, .wpd or .sdw.

    4. Re:PDF doesn't suck. by Tarantulas · · Score: 1

      The explanation of the "rotsnake" illusion came from pages 261 and 262 of a long report. What was the guy supposed to do, retype the text and go find the original images? The PDF worked great, doing what it's supposed to do - displaying text and images in the same format as the original document no matter what platform it's viewed on.

  51. Bathroom Wallpaper by Superfreaker · · Score: 5, Funny

    I had seen this before and was looking for a custom wallpaper manufacturer to have the Rotating Snakes illusion made into wallpaper for my bathroom. Just for the entertainment of having my friends to to go to the bathroom after a long night of drinking...hilarity ensues.

    1. Re:Bathroom Wallpaper by Anonymous Coward · · Score: 1, Funny

      Hilarity Ensues...

      Famous last words of a man about to re-wall paper his bathroom--yet again.

    2. Re:Bathroom Wallpaper by advance512 · · Score: 1

      Bad planning!

      Who'll clean the bathroom? :)

    3. Re:Bathroom Wallpaper by R2.0 · · Score: 1

      The Rollers would be better - rectilinear form and (for me) more pronounced effect.

      --
      "As God is my witness, I thought turkeys could fly." A. Carlson
  52. t-shirts? by Tibe · · Score: 1

    I'd love to see these on a t-shirt. Especially the anomalous motion ones. I wonder if there is enough detail for it to work.

    1. Re:t-shirts? by InfiniteWisdom · · Score: 5, Funny

      You need to stare at it for a bit for it to work... a casual glance won't do it. Now maybe if it was on the front of a girl's tshirt...

      Actually that might be a good protection for girls that don't like guys staring at their chests :) Guy stares... 5 seconds later... epileptic seisure!

    2. Re:t-shirts? by sahonen · · Score: 1

      I would love to see this image strategically located on a girl's T-shirt.

      --
      Make me a friend and I'll mod you up
    3. Re:t-shirts? by majid_aldo · · Score: 1

      so why were the girl's chest exposed in the first place?

      --
      --- widget evolution: enhanced, plus, super, ultra, extreme, exxxtreme, ultra-extreme, ..etc.
    4. Re:t-shirts? by Anonymous Coward · · Score: 0

      Only she would have to have a perfectly flat chest for the subtle illusion to work.. Hmm, your logic seems flawed somehow:)

    5. Re:t-shirts? by subtropolis · · Score: 1

      even if he's just trying to convince himself that, yes - her boobies are WIGGLING!!

      --
      "Our interests are to see if we can't scale it up to something more exciting," he said.
  53. What the fuck is wrong with PDFs? by Anonymous Coward · · Score: 0

    It's an open standard.

  54. http://www.michaelbach.de/ot/index.html by RotJ · · Score: 1

    Michael Bach's page has most of these illusions and more in interactive flash.

  55. The goggles do nothing... by Anonymous Coward · · Score: 0

    _real_ acid?

  56. Why is PDF 'icky'? by Bob+Davis,+Retired · · Score: 0

    Would Michael prefer the documents to be in the more stable and portable Microsoft Word format?

    The editorial comments on slashdot make less and less sense with each passing week. Maybe they discovered a new way to smoke pot at the head office?

    1. Re:Why is PDF 'icky'? by Anonymous Coward · · Score: 0

      I'm guessing he wants it to be in TeX, or some other worthless deprecated format.

  57. Re:Slow news day? by Anonymous Coward · · Score: 0

    Well, you can wait until next week. This is slashdot after all, the story will be back.

  58. WARNING: Be careful! by Anonymous Coward · · Score: 0

    > Some of the pictures on this website can cause dizziness or might possibly epileptic seizures.

    This is true, folks!

    Take care!

    Specially beware of the last picture, I got nausea just from looking at it!

    My, it was horrible!

  59. Re:Heh, er... by zulux · · Score: 1, Funny

    that would be a japanese university server. you must be american.


    And you, sir, must have no 'shift' key.

    --

    Moneyed corporations, non-working 'poor' and criminal prisoners are turning productive citizens into tax-slaves.

  60. ach! by DeusExMalex · · Score: 1

    ach mein eyes! too bad there isn't a handy cyber-gates borg eye-patch to fix all that...

  61. Mirrordot to the rescue! by nxtr · · Score: 5, Informative

    Just use this. Just saw it on Wired. They mirror every website Slashdot news includes.

    1. Re:Mirrordot to the rescue! by notanatheist · · Score: 0

      Yeah, I submitted it to Slashdot the other day because it was informative and certainly worth a few thousand geeks reading it but the Slashdot system rejected me! Slashdot is all about "in with the old and out with the new". I'm sure 6 months from now someone else will submit that same story but it'd get posted that time! Don't mind me, I'm just disgruntled.

    2. Re:Mirrordot to the rescue! by Anonymous Coward · · Score: 1, Funny

      You fool! Don't /. the mirror that helps against /.ing!

    3. Re:Mirrordot to the rescue! by 222 · · Score: 1

      The color scheme is also a bit more tolerable than some slashdot sections, which is a big plus :)

    4. Re:Mirrordot to the rescue! by kasperd · · Score: 3, Interesting

      Don't /. the mirror that helps against /.ing!

      The real funny part would be when they actually get on slashdot and start mirroring themselves.

      --

      Do you care about the security of your wireless mouse?
    5. Re:Mirrordot to the rescue! by Anonymous Coward · · Score: 0

      Lol! Thanks for that :)

  62. Re:Heh, er... by Southpaw018 · · Score: 1

    Or not...as of 8:30 eastern it's been slashdotted.

    --
    ACs are modded -6. I don't read you, I don't mod you, I don't see you. Don't like it? Don't be a coward.
  63. Re:now that is crazy TRY LSD by antani · · Score: 0

    ... maybe you should see things moving a bit

    and so much colours!

    boring day, boring day

  64. Speaking as a rhino... by Takuryu · · Score: 3, Interesting

    We prefer the term "crash" to refer to a gathering of us... herds are so... blaise.

    Congregations of other animals have different terms...

    A murder of crows
    A gaggle of geese
    A pounce of cats
    An ambush of tigers

    More can be found here.

    1. Re:Speaking as a rhino... by mamba-mamba · · Score: 1

      Hah!

      I was thinking about making a post like yours. I'm glad I read through first. No sense in getting modded down for redundancy.

      Meanwhile, I hope you get modded up as funny or interesting. ;-)

      MM
      --

      --
      By including this sig, the copyright holders of this work or collection unreservedly place it in the public domain.
    2. Re:Speaking as a rhino... by Anonymous Coward · · Score: 0

      forgot the best one :)

      An implausibility of gnus

      "becouse on the gary gnus gnews show: No gnews is good gnews for gary gnu"

      stendec@gmail.com

    3. Re:Speaking as a rhino... by StressedEd · · Score: 1

      A body of pathologists.

      --
      Be nice to people on the way up. You will meet them again on your way down!
  65. A practical use... by EmbeddedJanitor · · Score: 4, Interesting
    My son is a field hockey goalkeeper which, some while ago, lead me to think about things one could do to provide "optical diversions" to favour the goalkeeper. One of the things I considered was the use of camoflage techniques as done with navy ships of old, and soldiers through the ages, to break up the lines and confuse the oposition. Camoflage can be used to not only *hide* the person/object but can also be used to confuse the senses (eg. make it hard to tell which direction the objct is moving and what its features are) thus making it hard for someone aiming at a target. A delay of a second or so is often enough to give the edge. Anyway, back to the goalkeeper... if one could confuse the striker as to where the goalkeeper's arms etc are then it will take the striker a bit longer to get a shot off or cause them to miss their aim.

    These optical devices could potentially be quite useful... going to have a play :-).

    --
    Engineering is the art of compromise.
    1. Re:A practical use... by Anonymous Coward · · Score: 0

      I suggest you put a picture of the goatseman on his jersey, much more effective.

    2. Re:A practical use... by MaelstromX · · Score: 1
      My son is a field hockey goalkeeper which, some while ago, lead me to think about things one could do to provide "optical diversions" to favour the goalkeeper.


      Ice hockey goaltenders have this down to an art.
    3. Re:A practical use... by Lord+Ender · · Score: 2, Informative

      Citing the navy isn't the best or oldest example. Think about the Zebra (or many other African animals) /just got back from a safari

      --
      A slashdotter who didn't build his own computer is like a Jedi who didn't build his own lightsaber.
    4. Re:A practical use... by floydman · · Score: 1

      Actually this is banned in soccer. The teams uniforms have specific guidelines to follow when desiging.

      --
      The lunatic is in my head
    5. Re:A practical use... by cocotoni · · Score: 1

      But you will notice that goalies do have a different couloured uniform, usually a bright orange, silvery gray, off white, etc. That is to make the goalie stand out of the surounding hues, and (in theory) make the striker aim the goalie when shooting a penalty shot.

      In handball where the chances of blocking a penalty are even smaller, you can see this technique more clearly used.

    6. Re:A practical use... by Forbman · · Score: 1

      Perhaps having uniforms of a very rich cobalt blue with blocks of very red red (red, like International Rescue Orange is, so that it almost seems to be glowing...), the offsetting image focusings from the two intense colors might work a bit.

    7. Re:A practical use... by gilliboo · · Score: 1

      You know what else would be usefull... strap a piece of plywood to the golies back, or just give hime a shot gun! Whatever happened to plain old talent? If he's not good enough without optical illusions on his arms, he shouldn't be playing.

      --
      "Scattered showers my ass" -Noah
    8. Re:A practical use... by stephanruby · · Score: 1
      Actually this is banned in soccer.

      Not for the zebra-like referees. Now you see them. Now you don't.

    9. Re:A practical use... by freqres · · Score: 2, Interesting

      Didn't the leg pads Patrick Roy used his last couple of years have a white 'band' on the inside part of his leg so that when he went down in the butterfly position it looked like there was still an opening under his pads? Maybe it wasn't just that funny eye tick that made him such a great goaltender.

      --
      Rampant Ninja related crimes these days...Whitehouse is not the exception
    10. Re:A practical use... by TA · · Score: 1

      An interesting thing is that the "zombie", the name New Scientist used
      for the non-conscious part of you that is actually moving your tennis
      arm, walking the staircase, reaching for the glass of water and actually
      driving your car -- this part of you is _not_ fooled by most of these
      illusions. This has been shown by testing people with "blindsight", as
      well as people with normal vision. Thus, it may be that such tricks
      wouldn't work too well on the hockey field.

  66. The Professor's Curse by slumpy · · Score: 1

    "Oh sweet you can set 'em as your wall paper....Oh Shit!!!"

    *Vomit"

    --
    http://www.commaecho.com
  67. Who...? by mrdogi · · Score: 2, Funny
    the herd of rhinos that is ./."

    So, just exactly who IS "./" ?

  68. it's an illusion... by Savves · · Score: 1
    the site isn't down... now look closely... focus...

    i mean, come on, a university server in japan, slashdotted? how unlikely is that?

  69. The good doctor... by eddy · · Score: 3, Insightful

    ... should use PNG instead of GIF. First, as we all know, PNG aren't animated, so no-one will be fooled into thinking that maybe these are animated gifs ;-)

    But jesting aside; 310097 rotsnake.gif vs 262253 rotsnake.png, 46.7KB saved for that single image, or about ten seconds download time for a modem user.

    --
    Belief is the currency of delusion.
  70. re: japanese "university server" by timecop · · Score: 0

    incase the submitter didn't know,
    jap universities have some of the most horrible connectivity ever.

    incidentally, the server is now unreachable.
    thanks for fucking it up for everyone!

    you might have confused them with u.s. universities which actually have bandwidth.

  71. slashdotted already... by Anonymous Coward · · Score: 0

    what web-page? that was all an optical illusion

  72. Re:Heh, er... by MMMDI · · Score: 2, Funny

    Chairs are for sitting, PDF is for printing

    I completely agree with that, but decided to click the link anyway. Read halfway down, glanced over to the side, and what do I see?

    Free Chapter from "Son of Web Pages That Suck" (PDF from Sybex via ftp 3.25Mb)

    Thank you kind sir, for the hearty laugh.

  73. Re: The Goggles, They Do Nothing by Anonymous Coward · · Score: 0

    Speaking of Simpson's quotes, why the fsck wasn't the normal Fox line-up on tonight? Instead, I find some gay cowboy-eating-pudding movie that 98% of the free world has already seen. WTF! Fox is shit, and they've actually found a way to get worse. Did Rupert suddenly sell out to MTV?

  74. Re:Heh, er... by xouumalperxe · · Score: 1

    it's an UNIversity server in .jp (JAPAN) PDF is icky if you don't have a LaTeX distro ;)

  75. Totals by Anonymous Coward · · Score: 0

    Just for the record, the total savings are 110273 bytes for the five GIFs (~22s at 5KB/s), attempting no palette reduction.

    Unfortunately he's used JPEG on a couple of the images, for some reason.

  76. Cool illusion: motion-induced blindness by FleaPlus · · Score: 5, Interesting

    A very cool illusion is available here. Try looking inside of the triangle defined by the yellow dots, as the blue dots wander around. After a few moments, the yellow dots begin to blink in and out of your visual consciousness. It's quite a powerful effect.

    1. Re:Cool illusion: motion-induced blindness by exp(pi*sqrt(163)) · · Score: 1

      Great illusion, shame about the words. The author seems to thing this has something profound to say about the nature of consciousness. Where do these people get such grandiose ideas? All it shows is that there are some bugs in the way images are processed. Similarly the fact that the Lucas-Kanade algorithm fails to track certain types of feature correctly tells us nothing about computer consciousness.

      --
      Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    2. Re:Cool illusion: motion-induced blindness by FleaPlus · · Score: 1

      Consciousness is a very vague word which is used to describe a great many things. Visual consciousness (the sense of awareness that a particular object is in our visual field) is one thing that falls under this wide umbrella. Self-consciousness (which you're probably thinking of) is another.

  77. Re:Heh, er... by ilikejam · · Score: 1

    Ha ha ha ha.
    Outstanding. I never noticed that.

    --
    C-x C-s C-x k
  78. Re:Heh, er... by Anonymous Coward · · Score: 0

    PDF is bad, bad, and bad for websites, but even worse are links to MS Word doc format. They truly suck ass.

  79. mod this up! by Anonymous Coward · · Score: 1, Informative

    why isnt this on the slashdot frontpage?

    1. Re:mod this up! by Anonymous Coward · · Score: 1, Informative

      it's all about money. The /. editors won't cache stories themselves, because it would take eyeballs away from advertisers on the quoted pages. They probably feel the same way about some other cache site... they don't want to give it the light of day.

    2. Re:mod this up! by qzulla · · Score: 1

      I submitted it last Friday.

      Q

  80. Re:Heh, er... by Chrispy1000000+the+2 · · Score: 0

    Bah, ''Shift'' keys are overrated. Real men use caps lock to get them uppercase letters.

    --
    Sig
  81. I find it more fun to entertain teh kids with by WormholeFiend · · Score: 1
  82. mod down retarded by Anonymous Coward · · Score: 0

    you are the one who is wrong, sir.

    1. Re:mod down retarded by Anonymous Coward · · Score: 1, Informative

      Read the script! -- You, sir, are the one who is wrong.

  83. PDF rocks by Anonymous Coward · · Score: 0

    PDF rocks, moron.

    Thank god they didn't use a Microsoft format.

  84. Nope by loid_void · · Score: 1

    the rhinos trampled it

    --
    Anyone seen my jagged little pill?
  85. My favorite optical illusion by TrentL · · Score: 5, Interesting

    Check out this image. The squares marked "A" and "B" are the same shade of grey. If you don't believe me, open the page in a paint program and check out the colors.

    1. Re:My favorite optical illusion by Dalcius · · Score: 4, Funny

      How many people actually opened this up in Gimp?

      How many of you swore that each checkerbox was different and got thoroughly pissed off when you checked the hex value with the dropper and they were the same?

      How many of you physically cut and moved one box next to its partner and back again over and over, screaming in mental anguish as one moment they're obviously the same and the next they're two different colors?

      Count me in. This illusion pisses me off. :)

      --
      ~Dalcius
      Rome wasn't burnt in a day.
    2. Re:My favorite optical illusion by TechniMyoko · · Score: 1

      I did that. I still dont beleive it. It pisses me right off

    3. Re:My favorite optical illusion by Wannabe+Code+Monkey · · Score: 0

      I don't believe this, I did the exact same thing. Open in gimp, use the dropper and then move one square next to the other. That's weird.

      --
      We always knew Comcast was corrupt, here's the proof: http://tech.slashdot.org/comments.pl?sid=1909890&cid=34545432
    4. Re:My favorite optical illusion by harlows_monkeys · · Score: 3, Informative
      I did that. I still dont beleive it. It pisses me right off

      What's interesting is that I blocked out the rest of the picture by covering it with other windows, leaving just parts of those two squares visible...and they STILL look like different shades.

    5. Re:My favorite optical illusion by cyfer2000 · · Score: 2, Funny

      I wasn't, I rushed to the bathroom and began to vomit.

      --
      There is a spark in every single flame bait point.
    6. Re:My favorite optical illusion by jtriska · · Score: 4, Informative

      Its actually a pretty simple illusion thats both a problem to artists as well as a useful tool.

      Basically, colors always effect other colors. For example, if a gray square is surrounded by black squares, the gray square will seem much brighter than it would sitting next to other tones of gray.

      If you surround the gray square with white squares, the gray square will seem much darker.

      I guess you could call it the color theory of relativity.

      This works with colors, not just with shades of gray. Surround a medium gray square by orange squares, and the gray square will take on a cool blueish hue (blue is complementary/opposite of orange), even if its rgb is 128,128,128.

      In this optical illusion, the shadow cast from the cylinder onto the 'A' squares is affecting the appearance of the 'B' square. Its only the shadow thats causing the illusion.

    7. Re:My favorite optical illusion by memco · · Score: 1

      At first it was hard, but after some comparison in PS and some squinting and tilting of the head, I am able to see it now without doing any of those.

      --
      Get me a meat pie floater!
    8. Re:My favorite optical illusion by Myrmi · · Score: 1

      If you cover everything up - which I doubt you did, given that you did it with windows and the squares appear as parallelograms - it doesn't. I cut a template out of paper to do it.

      --
      "I think everyone is an agnostic but just doesn't know" - Frazz
    9. Re:My favorite optical illusion by achurch · · Score: 2, Informative

      What's interesting is that I blocked out the rest of the picture by covering it with other windows, leaving just parts of those two squares visible...and they STILL look like different shades.

      Make sure you cover up the letters, too, or the contrast (one letter is light, the other dark) will trick your brain just like the surrounding squares. I was able to see through the illusion by covering up everything but the corners of both squares.

    10. Re:My favorite optical illusion by secretsquirel · · Score: 1, Funny

      Surley this has got to be a flaw inthe matrix.

    11. Re:My favorite optical illusion by Anonymous Coward · · Score: 0

      To see another example of this, think about the following: how does a projector project black?

    12. Re:My favorite optical illusion by Captain+DaFt · · Score: 1

      Geez, just call me low tech. I just poked two holes in an index card and held it over the screen so just the two squares showed. };-) (Darn good illusion, though!)

      --
      The U.S. really needs an English to Wisdom dictionary.
    13. Re:My favorite optical illusion by Spoing · · Score: 1
      1. How many people actually opened this up in Gimp?

      I would never open that with the Gimp!

      I used Cinepaint...a fork of the Gimp.

      --
      A firewall can not protect you from yourself. Turn off what you do not need. Do not use the firewall to do your work.
    14. Re:My favorite optical illusion by kwoff · · Score: 1
      This illusion pisses me off. :)
      I like optical illusions because they highlight how very difficult it is to tell what really is out there because our brains munge the input.
    15. Re:My favorite optical illusion by Catheryne · · Score: 1

      Ah I am beyond questioning this. I am awed.

    16. Re:My favorite optical illusion by Anonymous Coward · · Score: 1, Funny

      http://www.harmonmiller.com/funnies/illusion.jpgTh is is another rather stunning optical illusion.

    17. Re:My favorite optical illusion by rjamestaylor · · Score: 1

      So why when I physically block all other squares on the page do the A and B squares appear different?

      --
      -- @rjamestaylor on Ello
    18. Re:My favorite optical illusion by Zusstin · · Score: 1

      Damn! Damn!! Damn!!!

      I did everything I could. I took a printout , I swear A and B looked different. I started cutting the printout, they were still different. Finally, when I had only A and B in my hand - in front of my *now* not so reliable eyes - then I saw that they were of the same grey shade. I had so much faith in my eye-sight, its all been shattered now.

    19. Re:My favorite optical illusion by Neoncow · · Score: 1

      It's actually worse than that. Your eyesight is fine. It's your brain that's misinterpreting it all.

      The only cure is...

    20. Re:My favorite optical illusion by gopher_hunt · · Score: 4, Informative

      Here is the original link, along with an explanation of why this illusion works.

      Link

    21. Re:My favorite optical illusion by Zusstin · · Score: 1

      Come on ,,, '...' wont make sense to me because you have made it clear that its my brain which is misinterpreting it all. This just could be another mis-interpretation.

    22. Re:My favorite optical illusion by Pieroxy · · Score: 1

      I did that in the same order, and the same anguish. Pisses me off too. Damn it!

    23. Re:My favorite optical illusion by rev063 · · Score: 1

      Here's a page with the A and B squares cut out in detail side-by-side: Outside the context of the checkerboard it's much easier to see they are the same color. Interestingly, even the color of the letters A and B looks different out of context.

    24. Re:My favorite optical illusion by gnu-sucks · · Score: 1

      I had to open it up too. But, after thinking about it, imagine if you DIDN'T need to. Imagine if it was clear as day that those two squares were the same color.

    25. Re:My favorite optical illusion by jonadab · · Score: 1

      > How many people actually opened this up in Gimp?

      Check.

      > How many of you swore that each checkerbox was different and got
      > thoroughly pissed off when you checked the hex value with the dropper
      > and they were the same?

      No. I wasn't sure at first (they _looked_ different, but there were different
      colors around them, which makes it hard to tell). So I zoomed in and panned
      back and forth, and then I was able to tell for sure they both had the same
      base shade for the bulk of their area.

      But what pissed me off about the image was how uglifically horrible the
      Evil Satanic JPEG Compression made it look. When I see an image like that,
      I want to physically harm the cretinous losers who developed JPEG compression.

      --
      Cut that out, or I will ship you to Norilsk in a box.
  86. Can you undo the illusion? by TrentL · · Score: 2, Interesting

    I've always wondered about this. We know about those grid illusions where the intersections appear to be darker than they are, or the "rotation" illusion in the article. But can you undo the illusion? Can you offset the color and remove the "dark intersection" problem? Can you curve shapes the opposite way and undo illusions of curve?

    1. Re:Can you undo the illusion? by Anonymous Coward · · Score: 0

      Yes.

  87. tech kid fun by loid_void · · Score: 1

    Yes, hours upon hours of fun... and keeping idle hands from doing the devils work... for a while.

    --
    Anyone seen my jagged little pill?
  88. Everybody loves the Hypno-Toad by Guillermito · · Score: 1

    Obligatory Futurama quote

  89. Re:Slow news day? by Anonymous Coward · · Score: 0

    >isn't known yet is the future

    Hmmm, is not known yet does not necessary mean it will happen? Well no good is my English so am I who to talk?

    As for news? what is news? I thought I now what reality is. Then I saw a few reality television show and now I feel I am trap in some anti-reality...I needs some news...but what is news...er...I see my future and isn't known...or is it? Got to go.

  90. Thank you Slashdot by ribo-bailey · · Score: 2, Funny

    Now I have a headache.

  91. Another Simpsons ref... by Anonymous Coward · · Score: 0

    We now return to Battling Seizure Robots!

  92. Herd of Nerds by EverStoned · · Score: 1

    There's already a HerdofNerds!

    It's the indie slashdot for the right brained types.

    1. Re:Herd of Nerds by fuzzix · · Score: 1
      There's already a HerdofNerds!
      It's the indie slashdot for the right brained types.

      I'm sure freshlegs will appreciate the slashdotting :)
  93. Sad.. by Anonymous Coward · · Score: 0

    That Userfriendly outscoops Slashdot!
    http://userfriendly.org/lotd

  94. Re:Heh, er... by bnenning · · Score: 1

    pdf is icky because it is a cross-platform well defined spec that produces beautifully printed output.

    And is obnoxious for reading on-screen.

    --
    How to solve most of our problems: 1.Lots of nuclear plants. 2.Cure aging.
  95. The War on Terror by ImTwoSlick · · Score: 1

    I just figured out how to make ANYBODY spill the beans. Just put terrorists in a room painted entirely in this .

  96. So What would happen? by Sark666 · · Score: 1

    If you made one of these your wallpaper? :)

    1. Re:So What would happen? by bot24 · · Score: 1

      Your wallpaper appears to boil, and you can't read the names of your icons. I made that rotsnake thing into a tile with the GIMP. I should find some way to unleash it on unsuspecting victims. Unfortunately, the effect seems diminished by way it is cut off on the ends.

    2. Re:So What would happen? by Vo0k · · Score: 1

      Drempels - a really psychedelic "wallpaper" ('doze only, sorry).
      Nope, not optical illusion. Just LSD effects fully animated.

      --
      Anagram("United States of America") == "Dine out, taste a Mac, fries"
  97. Lies! by Anonymous Coward · · Score: 1, Funny

    Square A has an RGB value of 107,107,107 while square B has an RGB value of 109,109,109!!!

    1. Re:Lies! by TrentL · · Score: 3, Informative

      lol. But sriously, the JPEG artifacts cause the values to be *slightly* off on some pixels. But I encourage you to cut out the A square and drag it next to the B square. When they're next to each other, they look exactly the same.

    2. Re:Lies! by sonicattack · · Score: 4, Funny

      That has to be the nicest color illusion I've seen. I believe that the illusion is so good, that the only reason the dropper shows both squares being (170, 170,170) is that even the GIMP was fooled by the shadow.

    3. Re:Lies! by benjj · · Score: 1

      Try cutting out a section of the A square and dragging it in and out of the shadow. It gets lighter and darker! I swear! :-)

    4. Re:Lies! by SamSim · · Score: 1

      What's better is that the bit you cut out appears to change colour as you drag it.

  98. Re:Heh, er... by NanoGator · · Score: 4, Funny

    "that would be a japanese university server. you must be american."

    Look! Mozira!! RUN!!!

    --
    "Derp de derp."
  99. Re:Heh, er... by jrockway · · Score: 2, Interesting

    PDF is an open standard.

    --
    My other car is first.
  100. In anticipation of a slow news day . . .PORN! by Anonymous Coward · · Score: 0

    "I would like to Slashdot a server that hosts a large number of images. That should spice things up."

    Post a link to a porn site.

  101. Re:Heh, er... by Anonymous Coward · · Score: 0

    is it an open standard (ie: can changes be submitted) or just open spec (able to be re-implemented freely)

  102. Warning for migraine sufferers..... by kill_-9 · · Score: 1

    There should be a warning for migraine sufferers :-)
    I had to come in to work, just recovering from a migraine headache early this morning. Not being able to give up on a /. 'dare', I loaded up the page and whoaa..migraine headache came back. The rotating snake thing is like...oh shit, I think I am going to barf on the keybo

    1. Re:Warning for migraine sufferers..... by Forbman · · Score: 1

      Another fun one is to get a fine grid, like chicken wire or hardware cloth. I think that there is a distance from your eyes where focusing on a particular part of the grid just about matches the same view you would get if you were looking through it, in that the images from each eye get overlapped the same in your brain for either situation, so your brain is flipping between the two modes... Talk about a brain cramp after messing with that for a couple of minutes.

      I've always had an interesting effect when viewing a bunch of regularly spaced vertical lines, like vertical blinds. If I'm at the right distance, the vertical lines will jiggle back and forth.

  103. that's true by Trepidity · · Score: 1

    Clearly the interpretation step is what causes this optical illusion, along with all other optical illustions. What I'd like to know is what in particular about this image makes it look moving when it's not.

  104. feel sick by Anonymous Coward · · Score: 0

    I'm looking at those spirals, man I'm feeling sick can't even type feel like im going to pass ouss.dak;1234l;199851q3t q3j q
    314905ua;klsd....

  105. Re:Heh, er... by Dun+Malg · · Score: 1
    pdf is icky because it is a cross-platform well defined spec that produces beautifully printed output.

    And that is a bad thing if you're trying to read it on a computer screen rather than printing it out. .pdf is a great format for things that will end up printed, like forms, or brochures; .pdf sucks for reading on computers because it does not adapt to local screen geometry.

    --
    If a job's not worth doing, it's not worth doing right.
  106. Here's the direct link. by veg_all · · Score: 2, Informative
    --
    grammar-lesson free since 1999. (rescinded - 2005)
  107. Re:Heh, er... by arodland · · Score: 1

    But then again, So is .ps.gz

  108. "A bulge" - minor issues by Sigma+7 · · Score: 1

    The image "A Bulge" suffers from minor imperfections - for example, the cell farthest down initiating the illusion is black with two white squares at the top. The center of the small right-hand square has a grayscale value of 254 rather than 255. Other imperfections exist elsewhere.

    While this doesn't impact the illusion directly, I know something that does. CRT monitors have been known to have minor convergence issues that generally mess around with how an image should look. As a result, it's best to print it out on paper to view the result.

  109. musical illusions by Anonymous Coward · · Score: 0

    Anyone seen any more of these musical illusions before?

    http://www.exploratorium.edu/exhibits/highest_no te /fr.discrete.html

  110. Weird observation by FredFnord · · Score: 1

    If you hold your hand in front of your face and wave it back and forth really quickly, so that your fingers intermittently interrupt the image, I find that it gets rid of all of the illusory movement in all of the images.

    Looking at the top image and blinking my eyes really fast is *very* strange. It turns it greyscale, sorta.

    -fred

    --
    Sign #11 of Slashdot overdose: You see the phrase 'moderate Republican' and you wonder if that would be a +1 or a -1.
  111. you're just trolling right? by Nf1nk · · Score: 1

    Notheingis wrong with pdf as a data format. where it sucks is as a method of giving information that could just as easily been in html, pdf's have their uses if you want to make a form that someone prints fills out and signs before mailing it to you they work great. If exact printing is crucial to you then a PDF is perfect. What sucks is when I am looking for a chunk of info and I have to open yet another program to read just some text. This is the case here. Oh yeah and I hate that the stupid adobe reader checks for updates every damn time I open it.

    --
    I used to have a cool sig, back when I cared
    1. Re:you're just trolling right? by Captain+DaFt · · Score: 1

      Do what I did. Just set the firewall to quietly block it.

      --
      The U.S. really needs an English to Wisdom dictionary.
    2. Re:you're just trolling right? by kliment · · Score: 1

      In this case, it seems to be convenience. As you can see, the pdf consists of two pages out of another paper, and it would have been more effort to convert them. The author just took two pages (using a pdf printer, no doubt) from the original document and posted them.

  112. Computer Room Wallpaper by Webmoth · · Score: 3, Interesting

    One of my customers had the computer sitting in the corner, so as you face the computer, you're also facing the corner.

    The trouble was, the wallpaper was vertical blue and white stripes, each about 1 inch (2,5 cm) wide, covering both walls.

    Sitting at the computer, seeing the striped wallpaper in your peripheral vision, you would get the unnerving feeling the monitor was attacking you, slowly approaching you, menacingly. (It didn't help that the monitor was on an elevated platform, so you actually had to look up at it.)

    After a few years, they covered the wallpaper with wood paneling.

    --
    Give me my freedom, and I'll take care of my own security, thank you.
  113. you mean.. by Anonymous Coward · · Score: 0

    Ruku! Mojira!! RAN!!!

    1. Re:you mean.. by Anonymous Coward · · Score: 0

      You actually mean:

      Rukku! Mojira!! RAN!!! (Hepburn romanization)

      Or...

      Rukku! Mozira!! Ran!! (Kunrei-shiki romanization)

      But since you're supposed to romanize foreign words into its original spelling, more "correct" romanizations are:

      ** Look! Mojira! Run! (Hepburn romanization)
      ** Look! Mozira! Run! (Kunrei-shiki romanization)
      ** Look! Mozilla! Run! (Mojira spelled as it is done in English)

  114. Title translation: Uzumaki Anpan by mattr · · Score: 2, Interesting

    There is a black and white round one called "Uzumaki Anpan". Uzumaki means whirlpool, coil, eddy or vortex. Something spinning around (uzu means swirl, maki means wrap as in wrapped sushi). As for the second term, An is sweet black miso paste, and pan is a loan word from the Portuguese for bread. Anpan is a hugely popular round puffy donut with the sweet paste inside. So the title roughly means, Vortex Jelly Donut. Rudy Rucker probably has some good words for it, I'll borrow one: Yarrr!

  115. Interestingly enough... by joranbelar · · Score: 1

    commonchaos beat Suchetha to it, by over a year it looks like ;)

  116. Cover the letters by ReKleSS · · Score: 1

    The fact that the letter A is light and the letter B is dark contributes to the illusion. Try covering them up as well - then you'll see that they're the same.
    -ReK

    --
    md5sum -c reality.md5
    reality: FAILED
    md5sum: WARNING: 1 of 1 computed checksum did NOT match
  117. BAD ADVICE! by Anonymous Coward · · Score: 0

    FYI, looking with two eyes, the snakes rotated, but I didn't feel sick.

    Closing one eye just to see... the snakes STILL rotated a bit, but I very quickly (almost immediately) felt powerfully sick. I'm not joking. It freaked me out. I'm not going back to that page...

    So that bit about "when the brain can't handle conflicting information from your two eyes" has to be crap. And closing one eye can make things much worse.

  118. The only kind of goggles I use... by Anonymous Coward · · Score: 0

    ... is WebGoggles. Not safe for work

  119. Re:Heh, er... by arose · · Score: 1

    So is HTML, it is also suited for on screen reading.

    --
    Analogies don't equal equalities, they are merely somewhat analogous.
  120. it WAS mongol horde by Suchetha · · Score: 1

    just FYI.. when i submitted this it was

    "In anticipation of a slow news day i would like to direct the Mongol Tartars at Akiyoshi Kitaoka's Optical Illusions page at http://www.ritsumei.ac.jp/~akitaoka/index-e.html The page also also has explanations on why/how they occur (in icky-poo PDF format).

    the page is on a .jp uni server so they SHOULD be able to handle the herd of rhinos that is ./"

    it was obviously edited for clarity and content

    mosty of teh changes are good, but i wish they had left the Mongol Tartar comment in though

    Suchetha

    --

    learn from yesterday, plan for tomorrow, party tonight
    or one out of three ain't bad
  121. http://www.sandlotscience.com/ by Mugros · · Score: 1

    Visit also http://www.sandlotscience.com/ a google search for "optical illusions" brings up many more pages

  122. Re:Slow news day? by Suchetha · · Score: 1

    hmm looks i'm going to be defending michael and the editors on this one..

    the article text was mainly ME.. it was edited for content, and clarity, but mainly me.

    i posted this for sunday just because (after being in the media for a while) i know very little happens on sundays. and so if you're going to put in something that is only marginally interesting compared to AMD launching its new 128bit chip or whatever, you have a better chance of getting it posted if you submit it for sunday.

    atb

    Suchetha

    --

    learn from yesterday, plan for tomorrow, party tonight
    or one out of three ain't bad
  123. Re:Heh, er... by Anonymous Coward · · Score: 0

    PDF is icky for various reasons:

    On Windows: The Adobe Acrobat plugin for browsers takes forever to load plugins you're not gonna be using, and it can freeze up your browser for awhile doing so.

    On Linux: The Linux OS you just installed doesn't like PDF, and you have to convert it to PS before you can do anything with it.

    On Mac OS X: PDF is not icky here, but you aren't currently using a mac. Boo hoo.

  124. Re:Epilepsy by Anonymous Coward · · Score: 0

    Seriously? thought you get epileptic seizures from rapid bright flashing images, not slow to still moving images. How can an epileptic ride a bus?

  125. I smell BS by Anonymous Coward · · Score: 0

    People with photosensitive epilepsy have seizures that are triggered by flickering light. Nice trolling + Pokemon reference.

  126. Re:Heh, er... by morie · · Score: 1

    indicated it was a pdf, indicated size, probably meant for printing... What is the issue? He does exactly as he advertises

    --
    Sig (appended to the end of comments I post, 54 chars)
  127. Mirrordot/microdot by Anonymous Coward · · Score: 1, Funny

    At first I thought the parent said "microdot to the rescue" - that would certainly explain why these images seem to move.

  128. ha! possesed brains by Anonymous Coward · · Score: 0

    these-a illusion just proof one thing:
    we're not who we think to be. looking at the
    illusion generates a core-crash of the artificial
    intelligence that is implanted in all human brains.
    it proofs that WE ARE POSSESED!
    just like in neuromancer a virus slowly drills its
    way into the black ice of the A.I. looking at these
    pictures confuses the "free-will-I-am-free"
    collective entity that lives in all our minds!
    if you look at the pictures and see no illusion,
    then you are one of very few people who have not
    been infected by the "collective-entity".
    think of this "collective-entity" as a Virtual
    machine running onthe brainw wet-ware and our
    personality and concience running in untop of it.
    we THINK we are in control, but we are just
    emulated personalities

  129. Visual Intelligence by Incadenza · · Score: 2, Interesting

    If you like this stuff, and especially if you like it explained, be sure to pick up a copy of Visual Intelligence by Donald Hoffman. By far the most interesting scientific prose I've read in years.

  130. Crash by Anonymous Coward · · Score: 0

    A grouping of rhino is not a herd.

  131. Take it to 3D by Blowfishie · · Score: 1

    Right, cross your eyes while keeping them focussed on the pictures. Some of them can be viewed stereoscopically. Bleh, yak! (passes out)

  132. Ob. Simpsons Quote by mrmagos · · Score: 1
    Is there any way to apply my mod points to a story title?

    While the title may be -1, Offtopic (or +5, Funny, depending on your current state of mind), the optical illusions are very cool. Very vertigo-inducing, however.

    --
    Never start vast projects with half-vast ideas.
  133. Cause of Seizures by SeanDuggan · · Score: 2, Interesting
    I am not a doctor, although I have played one on stage. According to my psychology books (admittedly about 20 years old, as I picked them up in a yard sale), seizures are caused by a feedback loop between the two hemispheres of the brain, generally from a lesion on one hemisphere. This is why butting the corpus callosum (the tissue that connects the two hemispheres and allows them to communicate) was an effective way of ending seizures at one time. Now admittedly, it also caused you to develop a literal split personality where your non-dominant arm would act on it's own when you weren't thinking about it, but eh...

    That said, any brain stimulus that involves coordinating the hemispheres could trigger a seizure if it's in the damaged area. And at that, last I looked at current research, they're saying that the right hemisphere controls the left field of vision on both sides and vice versa for the right, entirely contrary to the earlier theory that the each hemisphere of the brain controlled one eye. *wry grin* Where it gets really weird was that it was proven in experiments that each hemisphere handled the input from one eye and now they've proven it the other way. It really makes you wonder how much of our brain's deelopment may rely on how we believe it should work.

    --
    This sig has absolutely no significance and serves only to take up screen space and waste the time of the reader.
  134. Incorrectly quoted by John+Siracusa · · Score: 1

    The correct line is: "The goggles do nothing!"

  135. "Now remember people, thats REAL acid" by hardharry716 · · Score: 1

    "The goggles- they do nothing" - Rainer Wolfcastle, as Radioactive Man, while filming a stunt involving acid and is only given a pair of safety goggles, from an episode of The Simpsons

  136. Re:Heh, er... by jrockway · · Score: 1

    Actually postscript is encumbered, with patents I think.

    --
    My other car is first.
  137. Re:Heh, er... by WhiteDragon · · Score: 1

    well, it basically has to do with font and resolution matching. Some PDFs look very nice on screen, not just on paper.

    --
    Did you mount a military-grade, variable-focus MASER on an unlicensed artificial intelligence?
  138. Re:Heh, er... by MMMDI · · Score: 1

    Maybe I'm the odd one, but if I was reading a sample chapter from a book (as I do often on amazon), I wouldn't feel the need to print it. I'd either buy / borrow the book after reading the samples, or have no interest in it and move on to the next.

    If this goes through twice, I blame Thunderbird.

  139. i get eye strain from staring at monitors all day by Anonymous Coward · · Score: 0

    I noticed that for me the illusions seem to appear very vibrantly and active. While a coworker who doesn't suffer from eyestrain doesn't see hardly any moment. interesting...

  140. Even stranger than direct hex value comparison - by Blue+Mushroom · · Score: 1

    To witness what the picture is doing to your brain even more directly than cutting/pasting squares or looking at color hex values or blocking off with windows, physically use a piece of paper with small holes cut in it held against the screen.

    Now arrange the holes so that one hole shows only the B square color (no edges, no letter B). Then slowly slide the other hole from showing no A square edge to the A square edge dividing the hole in half. If you do it right, it looks like the colors are actually darkening and lightening as you slide the paper and the ratio of area of A square/adjacent square changes within the hole.

    Bear witness to the mechanisms of visual perception in real time! Small patches of color constitute a sizable percentage of your consciousness! This is a small peek behind the scenes of existence. You might call this picture an "optical illusion" but this picture is merely an extreme contrived example that calls attention to the kind of perceptual interpretation that your visual cortex is performing on a moment-to-moment basis.

    The act of being, the act of existing for a conscious entity, it is the act of unconsciously reinterpreting our perceptions so we can make sense of them, and we usually don't get to see the first drafts.

    Insert further life-is-an-illusion observations here for those of you who are more buddhistically inclined.

    --

    "Humanity lives and dies by its capabilities of communication, or lack thereof."