THE TRAINING BEGAN when the boy was just 9. His father, a Polaroid executive who prized precision, would tell the boy: Go to the encyclopedia, choose a topic, and then give me a one-minute speech about it. The boy would do as he was told. When he was ready, he would stand in the living room, planting himself between the fireplace and his father’s wing chair, and deliver his speech for an audience of one. When the boy was finished, his father’s response would always be the same. Do it again.