I've heard him called the no. 1 AI guy, in the world. He's basically Google's head researcher, and used to head search quality, he's been big in NASA, worked in

I've heard him called the no. 1 AI guy, in the world. He's basically Google's head researcher, and used to head search quality, he's been big in NASA, worked in industry, and written the no. 1 AI book for students. I expect he's had to read a few books to get to where he is. Also, he probably knew 80% of the content before he read it. Most of those books will have a chapter on vectors, a chapter on probability, a chapter on information (etc), and he's mastered that years ago ...