“Once I didn’t. Once, as I was told I should, I kept a “book” on all the players I knew, with notes about wrist shots, slap shots, backhands, quick releases or slow, glove side or stick side, high or low; about forehand dekes or backhand dekes, and before a game, I would memorize and rehearse all that was there. But when my body prepared for Thompson’s backhand before I knew it was Thompson, I realized that what was in my book, and more, was stored away in my mind and muscles as nerve impulses, ready, able to move my body before I could.”