I'm hard pressed to remember reading a book that I liked less or found less convincing, while agreeing with its core premise. This ebook is in the vein of Moneyball, Baseball Behind the Numbers, Scorecasting etc. in its heterodoxy and dissemblance of conventional wisdom. While the crux -- that teams should expand the talent pool of potential NFL coaches, use more analytics and advanced statistics to inform decision-making, and...punt less on fourth down (that one seems to crop up in every advanced football stats book), the tenor is off-putting. It comes off at times as a screed against the old guard/conventional wisdom that doesn't do much to combat the stereotypes of sabrmetricians as arrogant, outsider iconoclasts. Additionally, for a book that's main thrust is that football teams should be more analytical and data-driven, the examples seem cherry-picked, shallow, and deficient. Way too often through the book are statistical truisms thrown out with little supporting evidence. Worse, there are basic typographical and numeracy errors throughout the book that undermine the legitimacy of what claims are included, e.g., the ratio of 160,000 to 200 is 800:1, not the 8,000:1 cited in the book (loc 651). The burden of proof for an ebook is naturally lower than a full commercially-published book, but this could have used the careful eye of a proofreader/fact-checker and definitely could have used an editor.