only the parts of scene that matter and in the end like in the in the Berkley way that kind of one of the most powerful ways to do that is to think about the sort of action space like what are the parts of the scene that actually matter for making a decision rather than doing it allocating your error metric by pixel values which is totally simple to think about but but pretty meaningless okay so since then we've made it a lot faster and a lot better and it's also changed in many many ways but basically we are flying deep networks that produce