This seems to be lower in quality compared on the previous book - There seems to be a dissonance in the radical approach of the author with respect to a few chapter. Never the less I love the book. The book is better in areas where the attitude of the author matches with the theories of the chapter but this is always not the case. For some theories can't be approached with the mindset of the author i.e. incremental build up of knowledge with one math problem at a time. But it works miracles when it does work. After all these years, I remember the incredible techniques he uses to arrive at solution, Sometimes i realize the genius of the author in the fact that he uses a simple method even though the problem could be solved in a more difficult fashion using other techniques, he sticks to the techniques that work over and over in a wide scenario. I have great admiration for the author to put in the effort to create these books.