The things I liked in this book were (1) the idea of looking at your trading strategy as a function of the risk and the opportunity to trade, and (2) the snow fight metaphor for easy understanding of the key concepts in trading, such as win rate, position sizing, etc.
However, I had problems with pretty much everything else in the book, e.g.:
- there was not a single one commentary on the trading style of the author which leads me to believe that this is yet another case of an author of a trading book who is not a trader himself
- at times there was incomplete or wrong mathematics, such as what mean is
- each and every one of the concepts presented in the book were repeated at least 10 times (I don't need to hear 10 times about how important position sizing is, I'm sure that even a kid would have gotten it after the 3rd time)
- too much examples of how bad traders other people are, which didn't achieve anything remarkable, and just looked like casually putting other people down