We're going to talk — my — a new lecture, just for TED — and I'm going show you some illusions that we've created for TED, and I'm going to try to relate this to happiness. What I was thinking about with happiness is, what gives happiness — or happiness, which I equate with joy in my particular area, and I think there's something very fundamental. And I was thinking about this. And it's in terms of both illusions and movies that we go see and jokes and magic shows is that there's something about these things where our expectations are violated in some sort of pleasing