The Dot Is Tracking Your Eyes

"I'll try to just say what my view is. So here's the analogy. Suppose you go to a movie theater and you're sitting in the theater and then you look up and there's this bright fluorescent dot or, you know, ball," he says. "It's like on the top left of the screen when you notice it and you're looking at it and then you start moving your eyes and the dots moving around."