I really loved this book. Peter Theil’s blunt and sometimes abrasively honest concepts are very “Purple Cow” and right up my alley. E.g. make big claims from observations and work out why they are wrong or right. Although there are some things I didn’t agree with they are done so in a way that pushes me to reevaluate my reasoning. For the many things I did agree with, it is always nice to have someone better articulate concepts and back you up with some solid experience. 10X yo self.