Next book is all the ways where machine learning tools, predictive algorithms have fundamentally changed our life. Some of them are obvious to me like when we sequence cancer patients DNA and we have predictions of exactly which drug it worked with that's actually a very simple algorithm. But other ones involve predicting, say, the age of blood that's left at the scene of a crime by looking at each piece of DNA for its epigenetic state. And so prediction is not just better medicine or in finance and economics. It can also be really predictive and manipulative, frankly, with what happens. So I think we're seeing more and more of these algorithms show up all over the place.