“The U.C.L.A. basketball coach John Wooden, at the first squad meeting each season … had his players practice putting their socks on. He demonstrated just how to do it: he carefully rolled each sock over his toes, up his foot, around the heel, and pulled it up snug, then went back to his toes and smoothed out the material along the sock’s length, making sure there were no wrinkles or creases. He had two purposes in doing this. First, wrinkles cause blisters. Blisters cost games. Second, he wanted his players to learn how crucial seemingly trivial details could be. ‘Details create success’ was the creed of a coach who won ten N.C.A.A. men’s basketball championships.”