"Years later Bill Belichick would understand what made his father so good a scout: the absolute dedication to his craft, the belief that it was important, and the fact that so many people -- the people who paid his salary, his colleagues, and the young men who played for him -- were depending on him. But it was not just about the superior work ethic; it was about natural abilities. Steve Belichick had been blessed with great eyesight, 20/15, he was told. he had come to believe, though no one had ever measured him on this, that he had great peripheral vision, as well, because when he played he had been able to see the play as it opened up, and the dangers that existed for him on the periphery."
From "The Education of a Coach"
By David Halberstam