every pixel every location in the world has a depth right because then you get parallax motion so implicitly if you want to predict what the wall is going to look like when you move your head you're gonna have to learn that implicitly even if you have no idea that the world is two-dimensional that's the best way to explain how the world changes okay so that's not that's an idea that suggests how we can learn very simple concepts just by learning to predict essentially and that's going to be the general theme of this talk which