built all of its understanding from scratch we finally got over the hurdle really thoroughly maybe five years ago and now we're at a point where there are so many different paths opens that someone who wants to get involved in AI may be the hardest problem they face is choosing which path they want to go down do you want to make reinforcement learning work as well as supervised learning works do you want to make unsupervised learning work as well as supervised works do you want to make sure that machine learning algorithms are fair and