Audio Transcript Auto-generated
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Welcome to some stories issuing.
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Now you see it now you don't By Seymour Simon
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I wonder what the cover our book is telling us
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about what's inside and actually at the top, it says.
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An amazing world of optical illusions.
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Do you know what the word optical or illusions means?
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Well, if you look at the shape of our text,
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it's actually the shape of an eye.
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So optical actually means will we see with our eyes.
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An illusion is sort of a trick.
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Magicians do illusions now.
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We always with magicians.
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We think we're seeing something when in fact we're actually
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they're fooling our eyes to see something there.
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So let's look at our first optical illusion.
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There are two lines A, B and C D.
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Which one is longer?
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I think you guess CD.
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Now our brain is telling us because the way the
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positions of the lines are CD is longer, but when
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you put them up against each other, A, B and
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C D are actually the same length.
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Here's another one.
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Look at Lines A, B and B C.
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Which one is longer?
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Now My eyes are telling me eight rbc is definitely
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longer than a B.
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But let's look at him.
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They're actually the same playing amazing what our brain and
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our eyes do together.
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Now here's another optical illusion.
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Thes three telephone poles.
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Our long a stranger, which one is bigger, is the
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1st 1 in the front, smaller than the middle one,
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and the one in the back looks bigger.
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Well, again, it's an optical illusion.
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It's what our brains air telling us.
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I take away all the lines in the background.
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They are all this same size.
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It's pretty amazing now, in order to make them appear
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to be the same size, because these lines are actually
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fooling our eye to look at perception.
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What's in the back is smaller.
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What's towards us is larger.
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But if we look in real life at a line
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of telephone calls like this, we would think we would
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see that the one further away looks or appear smaller.
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So our artists would actually have to draw it smaller
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to give us the illusion of perception pretty cool what
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our brains do.
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Here's another optical illusion, depending on what you're looking at.
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If you look at the three bars that stick out
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from the base and you follow it from the end
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in you'll notice if you look almost like cover up
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the picture and half the three bars look like any
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three bars.
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But if you follow it into the base, they're not,
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and if you follow it out from the base, you'll
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see it.
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But it's pretty cool, but our brain does now in
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order to understand that a little bit.
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It's good.
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Don't understand the mechanics of her eye, and actually, it's
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pretty cool.
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We see an image like this tree, and it goes
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into our eye.
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That image comes into our eye, and it has a
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lot to do with light and other things.
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But our eyes actually flip them upside down, and our
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brain perceives it upside down.
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But we've trained it to rearrange it pretty cool if
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you have cement from their other questions.
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Still little research on how the eye works optically.
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It's Amisi.
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So let's look at some more thirties now.
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I can take an average three lines, and I know
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this is kind of not a re allowed, but this
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book is filled with optical illusions that were going toe
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talk through, and if you really want to get in
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depth. Grab the book because it's a lot more Texan
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and involved.
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No, if I take these three all the same length
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lines and I actually extend them, look what I can
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do and change how our eyes perceive it.
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By putting these little Flandy wings out further, it's almost
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down and then straight down all of a sudden are
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three lines start to appear different lengths again.
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Fooling are I.
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Now? I love this one.
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It's the straight line.
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Going through the other two lines is a a C
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or is it a B?
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Which one is your brain telling you is the straight
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line is the A C or A B?
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Well, if you guessed a B, you're actually correct.
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A. C doesn't connect at all.
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Let's see what's up next.
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There's our illustration for that.
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Now, again are straight long minds.
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They're going on a diagonal from this direction.
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Look like they're going at all kind of wavy directions
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because of all these other little tiny lines.
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But if we actually look at it, they are parallel
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with each other exactly parallel.
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But all those small waving lines are actually confusing our
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brain to see those as being all over the place.
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Another one.
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Which circle is bigger?
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It's a circle out further out, or the further one
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in which one appears to be smaller.
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But which one appears to be larger?
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Did you guess one over the other?
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Well, they're actually the same size, but our brain, because
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of this angle, is telling us they looks different.
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Size. Here's another one, but square in the body of
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sorry square in the circle or the square outside the
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circle. Which circle is bigger?
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Hate to tell you, but again, they're actually the same
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size because our brain is interpreting the information and fooling
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our eyes.
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This one super confusing.
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But it looks like there's a spiral of lines, a
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twirl almost almost like looking down into a tornado.
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The lines are swirling down to the center.
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It's actually not this circle are actually drawn in a
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complete brown circle, but the way the other graphics air
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going on in the background, it's fooling or I burn
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optical illusion.
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Here's another one.
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If we look at this, are flat line that goes
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across the horizon.
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Looks like it actually is bending because of the almost
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rainbow shapes.
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But if we draw a line under it, we will
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see it's actually a straight line optically because of those
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rainbow pieces, it's making our brain think that that bottom
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line is her same thing.
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Here you look at these, um, continuous circles, and then
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you put a shape over a square, and a rectangle
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are triangle.
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It looks like the sides actually curve in, but they
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don't. They're circular lines on the outside are making our
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brains think that their actually curving lines.
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It's amazing what little things in a line drawing can
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fool are praying it can actually change what our brain
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is perceiving.
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Here's another one.
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Here's a illustration of an open box.
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Now Is the flat coming towards us?
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Or is the flap pointing back?
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Study it for a while.
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You may not see it at first, but if you
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study at, it will actually start to go back and
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forth. I love this book.
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Here's another optical illusion.
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Do you see a base or candy bowl that we'd
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put some Candy Anderson fruit?
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Or do you see the outline of a face or
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two faces facing each other now that you see both.
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It's really hard not to see them both at the
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same time, and your brain starts to flip flop back
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and forth.
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Here's a bunch of random little spots.
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Well, if you look at it and study it for
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a while, it looks like spots.
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Or maybe a dog named spot.
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See the dog.
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It's crazy.
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Once you see it, it makes it really hard to
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not see it.
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Here's another one.
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Are the white lines on a black background or the
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black lines on a white background?
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This one almost vibrates.
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Do you see it?
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It's crazy.
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Our eyes have a really hard time focusing on shapes
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like that.
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Here is a tricky one.
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It's a lot like our spot.
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What's a little dots?
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But do you see a knight on a horse?
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Stare at it for a while.
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Sometimes squint your eyes and look at it.
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But once you see it and you can see the
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front leg of the horse right there, sticking up the
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horse years and over here in the center is the
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head of the night.
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Here's some optical illusions with color.
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Now we have a checkerboard in the background.
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That's green with a red kind of checkerboard going diagonally
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through it.
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Now, on the other direction, what appears to be a
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darker green and darker red, squiggly line.
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But guess what?
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They're all the same color green and red.
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Hard to believe.
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I had to, like, actually zoom it in and really
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look at it.
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But that green is all the same, and that red
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is all the same.
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Now, this is a really cold trick.
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This if you actually got to see hello, Red Fox.
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The book that I read about optical illusions with color
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kind of works in the same way.
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Stare at one of the birds either the grain or
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the red count to 10.
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Really focus on it on it.
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And don't move your eyes.
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Then look into the center of the cage.
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Encounter three.
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One bird's gonna appear red and one bird is going
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to appear Green.
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Wonder which one is.
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Here's another look at this.
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I was very hard for you to look at, but
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it almost looks like this illustration is a guilty.
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Oh, I love chimes.
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It seems like it's actually moving.
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Who? I want to go back.
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Sorry. There.
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There we go.
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especially once you move it around.
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It looks like there's a lot of movement, but it
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is all straight lines fixed, drawing there.
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It's not a video.
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This is very similar to the other, drawing that we
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saw just the black line drawings.
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But again, if you look at the lines inside there,
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actually completely parallel.
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But our brain thinks these air going in all kinds
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of different directions.
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Here's another version of the one with the circles that
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look like they're swirling to the center.
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If we look at it again, you'll notice that that
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circle does not swirl to the center.
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It is completely round, but our brain on this one
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is telling us otherwise.
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It's really cool how sometimes our brain and our eyes
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don't work great together.
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Now I love these optical illusions, especially when it starts
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to come in with art.
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This staircase actually looks like if you just look at
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the background, it looks like a flat background.
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But then, if we tried to use the steps, is
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it actually physically possible for that staircase to exist?
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What do you think?
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No. Optical illusions and art have been around for a
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very long time, this one looks like almost the front
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of the buildings.
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Falling off is becoming fabric and is draped on the
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side of the building.
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Or this one I love.
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Is it a rabbit or is it a duck?
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Which one do you see?
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Is this bills of a duck or is it the
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rabbit ears of a rabbit?
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These kind of optical illusions have been around way longer
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than a lot of us have been alive, almost back
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to my grandparent's generations.
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And before, this was a very famous one around the
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time of my grandparent's.
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Now you either see a very fashionable young lady whose
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heads turned and you just see the side of her
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face, her hair and a feather, or you see the
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large nose of an older woman and her chin down.
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Now, on the younger woman, it appears to be a
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necklace choker.
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And on the older woman, it's her lips.
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You see him?
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Actually, let's go back.
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It's really kind of cool.
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Now, this one, if you look at it, it looks
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like the two figures are actually appearing in different directions.
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But if you stare at one long enough, they will
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start to appear that they're looking in the same direction.
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Tryto, again with color are actually contrast in black and
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white Now, which square the black and white appears to
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be bigger.
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A lot of people say that the White Square looks
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bigger than the Black Square, but they're actually the same
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size. It's the way that our eyes see light and
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dark. Same thing with our circles.
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Which circle seems to be bigger dot the black doc
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or the white dot?
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A lot of people say that the blacked out appears
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to be larger because of the white background again, optical
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illusions. Same thing here on our first illustration.
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Which gray pointer is darker?
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It seems like the gray on the black background looks
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lighter than the gray on the white background.
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Again, it's just how our eye perceives all of this
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information. Now I said that in art, optical illusions have
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been around a long time.
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They've actually been around since the days of the Renaissance,
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a long hundreds and hundreds of years ago, artists used
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to paint very flat with very much, very little depth,
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and during the Renaissance, the age of enlightment, we started
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to get perception.
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Artist started to draw so that you could almost look
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into a painting.
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Here's a great example of how perception works.
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Notice that the doorways were drawn smaller, just like our
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telephone poles were to make it appear like there's depth,
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like you could almost walk into this painting again, another
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painting from around the same time where the artist used
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different angles to give them the fooling, the opt allusion
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that there is depth, perspective and are drawing it looks
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like you could almost walk across that bridge into the
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other section.
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Now here's a painter or an artist that I want
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pressure. He was a master of fooling the eye.
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This is a city scape, or is this a flock
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of geese flying?
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Which one do you see?
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And which way does this painting actually go?
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If you look into the back window and you see
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the birds sitting there, it looks like a box that
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you're looking into.
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But then you notice the other windows, and it really
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challenges us to figure out which way this painting is
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supposed to go.
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I don't think there's any good way.
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What do you think?
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And he loved to do the staircase.
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Now remember the other illustration when we had the flat
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background and the two sets of stairs?
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Look at this building.
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Do you think that you'd be able to use the
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staircase and go all the way around?
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I would be kind of hard.
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I love his work.
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Actually, let's zoom it in.
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I think it's pretty amazing.
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Another version of his steps idea.
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But if you follow the ramp all the way up,
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see if you could actually walk that ramp and get
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to where you think you're going, I don't think it
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will work.
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Contemporary Modern are.
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Here's Bridget Riley and look at these waves.
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This painting are drawing Actually looks like it's moving.
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It looks like a video it's not.
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It's a fixed, flat drawing.
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You can go see this in the Museum of Modern
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Art in New York City.
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I hope that you really enjoyed.
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Now you see it now you don't and I will
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tell you a little thing that I learned about optical
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illusions in areas of the world where they don't have
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this idea of seeing fixed pictures like this when they're
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shown some of these optical illusions, they don't see what
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we see our brain has been trained over the years.
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It's to understand or challenge this percent idea of perception
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of movement.
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And we see things very differently.
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You're interested You should take a moment and do a
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little research on how different parts of the world see
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optical illusions different.
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I wonder, Could you draw an optical illusion?
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I hope you enjoyed.
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Now you see it now you don't I see more?