Anyone who has had the great fortune to pick up Michael Lewis' "Moneyball" knows about how Billy Beane and his merry men have revolutionized how we think about baseball. Through his obsession with statistics and a constant emphasis on finding "undervalued" players, Beane has engineered a low-budget team that (most seasons) is able to compete with the big-market clubs who can afford to waste money on inefficiency.
In Lewis' engrossing account of Beane's philosophy at work, a significant portion of the book is spent detailing how he and his team assessed prospects. While he can certainly be forgiven for getting excited about players who never panned out, he also poo-pooed some players who, seven years later, have turned out to be big-league stars.
It would be unfair to baseball traditionalists if no one called him on his errors.