when we attribute sensory experiences to 00:06:39 ourselves for instance like the experience of red or the experience of seeing blue the model is external properties and we think of there as being inner properties just like those external properties that somehow we are 00:06:52 um we are seeing immediately

I want to start with a game. Okay? And to win this game, all you have to do is see the reality that's in front of you as it really is, all right? So we have two panels here, of colored dots. And one of those dots is the same in the two panels. And you have to tell me which one. Now, I narrowed it down to the gray one, the green one, and, say, the orange one. 00:00:41 So by a show of hands, we'll start with the easiest one. Show of hands: how many people think it's the gray one? Really? Okay. How many people think it's the green one? And how many people think it's the orange one? Pretty even split. Let's find out what the reality is. Here is the orange one. (Laughter) Here is the green one. And here is the gray one. 00:01:16 (Laughter) So for all of you who saw that, you're complete realists. All right? (Laughter) So this is pretty amazing, isn't it? Because nearly every living system has evolved the ability to detect light in one way or another. So for us, seeing color is one of the simplest things the brain does. And yet, even at this most fundamental level, 00:01:40 context is everything. What I'm going to talk about is not that context is everything, but why context is everything. Because it's answering that question that tells us not only why we see what we do, but who we are as individuals, and who we are as a society.

so here's a straightforward question what color are the strawberries in this photograph the red right wrong those strawberries are gray if you don't 00:00:12 believe me we look for one of the reddest looking patches on this image cut it out now what color is that it's great right but when you put it back on 00:00:25 the image it's red again it's weird right this illusion was created by a Japanese researcher named Akiyoshi Kitaoka and it hinges on something called color constancy it's an incredible visual 00:00:39 phenomenon by which the color of an object appears to stay more or less the same regardless of the lighting conditions under which you see it or the lighting conditions under which your brain thinks you're seeing it