addition to all your research you also co-authored a book on these learnings oh that guy that's right with Joshua Benji oh and Aaron kohrville who were my PhD coat visors we wrote the first textbook on the modern version of deep learning and that has been very popular both in the English edition and the Chinese Edition we sold about I think around 70,000 copies total between those two languages and I've had a lot of feedback from students who said that they've learned a lot from it one thing that we did a little bit differently than some