so here we have the actual robot that's going to learn to navigate the hallways in quarry all over at the electrical engine electrical engineering building at Berkeley so we see here and actually when it's still learning has a lot of collisions but it learns to predict that it learns something say if I think if I see this take that sequence of actions I will have a collision in five time steps or my heading will change in that way and so forth and so after training its internalize a lot of how the world works