empirical fact I know so you can have this model with many bad local minima do something and then SGD works so over privatization okay here's an experiment showing this this experiment is essentially replicated from this paper of living Isha Mirror and she'll have shorts so on the left hand side the data comes from a teacher network that's fairly small compact as 50 neurons on the learner side the network has doubled the number new ons there's a hundred neurons but still the data comes from a network with only 50 neurons so if you