Mark Changizi

So it had occurred to me back then. I said, I don't think it has anything to do with stereoscopy whatsoever. And it turns out it's all about one currency. This is again to this idea of why... Why aren't there three, two or three or more equivalent kinds of functions that are all competing? And then it's just some ugly mess and it's not a good design hypothesis at all.

So it had occurred to me back then. I said, I don't think it has anything to do with stereoscopy whatsoever. And it turns out it's all about one currency. This is again to this idea of why... Why aren't there three, two or three or more equivalent kinds of functions that are all competing? And then it's just some ugly mess and it's not a good design hypothesis at all.

It's going to be sort of ugly kludge that happens to – it's almost never a kludge. And so in this case, the reason that we have forward-facing eyes and the more forward-facing they are is to see better in clutter. And so what I mean by that, animals that evolved with leaves all over the place. When there's leaves, if your eyes are more widely separated than the clutter leaves, let's say.

It's going to be sort of ugly kludge that happens to – it's almost never a kludge. And so in this case, the reason that we have forward-facing eyes and the more forward-facing they are is to see better in clutter. And so what I mean by that, animals that evolved with leaves all over the place. When there's leaves, if your eyes are more widely separated than the clutter leaves, let's say.

It's going to be sort of ugly kludge that happens to – it's almost never a kludge. And so in this case, the reason that we have forward-facing eyes and the more forward-facing they are is to see better in clutter. And so what I mean by that, animals that evolved with leaves all over the place. When there's leaves, if your eyes are more widely separated than the clutter leaves, let's say.

So, for example, if you've played this game, if I hold my finger up in front of you, it's very thin, and I look at you, but not my finger, I see two copies. Unless I've got a dominant eye, but for those of you who don't have a dominant eye, you'll see two copies of your finger, and each will be semi-transparent.

So, for example, if you've played this game, if I hold my finger up in front of you, it's very thin, and I look at you, but not my finger, I see two copies. Unless I've got a dominant eye, but for those of you who don't have a dominant eye, you'll see two copies of your finger, and each will be semi-transparent.

So, for example, if you've played this game, if I hold my finger up in front of you, it's very thin, and I look at you, but not my finger, I see two copies. Unless I've got a dominant eye, but for those of you who don't have a dominant eye, you'll see two copies of your finger, and each will be semi-transparent.

Right. Now, you can see through it. Right. So what one eye is being blocked with, the other eye is seeing the world beyond that. And so your brain has evolved to just create two copies of it. And you're not confused like, oh, my God, I've got two figures. No, you know what's going on. It's just you have this perception that combines them and creates semi-transparency so that you can see beyond it.

Right. Now, you can see through it. Right. So what one eye is being blocked with, the other eye is seeing the world beyond that. And so your brain has evolved to just create two copies of it. And you're not confused like, oh, my God, I've got two figures. No, you know what's going on. It's just you have this perception that combines them and creates semi-transparency so that you can see beyond it.

Right. Now, you can see through it. Right. So what one eye is being blocked with, the other eye is seeing the world beyond that. And so your brain has evolved to just create two copies of it. And you're not confused like, oh, my God, I've got two figures. No, you know what's going on. It's just you have this perception that combines them and creates semi-transparency so that you can see beyond it.

Now, even my whole hand, I'm almost missing nothing, even with my whole hand in front of me. There's a little bit of a core in the middle, but I'm capturing most of it.

Now, even my whole hand, I'm almost missing nothing, even with my whole hand in front of me. There's a little bit of a core in the middle, but I'm capturing most of it.

Now, even my whole hand, I'm almost missing nothing, even with my whole hand in front of me. There's a little bit of a core in the middle, but I'm capturing most of it.

So for objects that are not as big as this interpupillary distance, the separation between my eyes, then when you're an animal with those kinds of eyes in a forest with leaves that are typically smaller than that, you actually get, I call it x-ray. You actually can see, it's probabilistic summation. You actually can see much, much more of the environment beyond than when you're a cyclops.

So for objects that are not as big as this interpupillary distance, the separation between my eyes, then when you're an animal with those kinds of eyes in a forest with leaves that are typically smaller than that, you actually get, I call it x-ray. You actually can see, it's probabilistic summation. You actually can see much, much more of the environment beyond than when you're a cyclops.

So for objects that are not as big as this interpupillary distance, the separation between my eyes, then when you're an animal with those kinds of eyes in a forest with leaves that are typically smaller than that, you actually get, I call it x-ray. You actually can see, it's probabilistic summation. You actually can see much, much more of the environment beyond than when you're a cyclops.

So, and in fact, I noticed this playing video games back 20 something years ago, when I would be, you know, because you're a cyclops and you're hiding in bushes and I'd be trying to snipe people. And then when you're in a bush, you can't see anything. Of course, these are fake bushes, I get it.

So, and in fact, I noticed this playing video games back 20 something years ago, when I would be, you know, because you're a cyclops and you're hiding in bushes and I'd be trying to snipe people. And then when you're in a bush, you can't see anything. Of course, these are fake bushes, I get it.

So, and in fact, I noticed this playing video games back 20 something years ago, when I would be, you know, because you're a cyclops and you're hiding in bushes and I'd be trying to snipe people. And then when you're in a bush, you can't see anything. Of course, these are fake bushes, I get it.