The brain is like a black box in there. It doesn't know what's out here in the world. Every minute it's working, every mill second to ten millo seconds, it's working really hard to try to figure out what's out there. And sometimes that guess about what's outthere is wrong. Sometimes you see something moving and there's nothing moved at all. But when we were evolving, might have been that tiger or tiger? So i'm always very interested to talk to people like you, because i'm kind of hunting, i guess, for components to it. You did a study talking about the brain and perception that i want to have you talk a little bit