Good read.
In the book one interesting part is how in 2006, despite all his team scouts strongly objecting to it, Belichick and Pioli went with Laurence Maroney and Chad Jackson because Josh McDaniels pushed for it (McDaniels' brother was an assistant coach on Maroney's team). It explained to me why the 2006-2008 Patriot drafts were so terrible. McDaniels' ineptness at personnel management and talent evaluation was confirmed for me when one looks at how he completely decimated the Denver Broncos after (even trading a 4th to us for Laurence Maroney), and now with the Rams who are dead last in points per game, total yards, and 3rd down despite having Sam Bradford and Steven Jackson.