I haven't read this book, but I have read a lot of posts and watched a presentation by the author, Pieter Levels. While he is a nice guy and certainly very interesting, it's my opinion that he suffers from Survivorship Bias[1]. Not saying don't buy the book; just take it with a grain of salt if you do.<p>[1] <a href="https://en.wikipedia.org/wiki/Survivorship_bias" rel="nofollow">https://en.wikipedia.org/wiki/Survivorship_bias</a>