PositiveThe Boston GlobeThis is an unauthorized biography ... So instead of 457 pages of hero-worship puffery, we get a fascinating, unvarnished history of what made Belichick the coach he is today. You’re not going to find out why Malcolm Butler didn’t play in the Super Bowl, but if you want to know why Bill is the way he is, this is the book for you ... we’re particularly interested in named sources providing examples of young Bill Belichick bending the rules to gain a competitive edge — including doctoring a college teammate’s lacrosse stick to gain an advantage while avoiding detection from officials. It’s Spygate/Deflategate 101 ... My personal favorite story in the book comes from an anonymous assistant who worked for Belichick when the Hoodie coached the Browns from 1991-95. Belichick likes to test his assistants and can be downright diabolical.