 So I've got a game for you to play over here, James. It's our last game of today, I'm afraid, and Will is going to explain to us what to do. So what we're going to ask you to do is to watch a video on the screen of a baby making movements, and we're going to get you to imitate those movements and try and copy what you can see in the picture to get you to understand just how complex some of those movements are.