Well, first of all, not all humans can do a backflip. You picked an interesting one because it's not even a simple thing. It's very hard. And so you need to be athletic; you need to be strong. And being athletic and strong and a robot is challenging. You know, building powerful actuators and having the right kind of batteries. Then you need to be able to kind of control your body.

Doesn't it involve a certain amount of imagining ourselves into the future?