numbers classifier where all the data sets are set up to make it very straightforward for you and that way you get to exercise all of the basic skills while you read the book or while you watch Coursera videos that explains the concepts to you so over the last couple years have also seen you do one will work on adversarial examples and tell us a bit about that yeah I think every searle examples are the beginning of new fields that I called machine learning security in the past we've seen computer security issues where attackers could