Once upon a time, a long time ago, a man took off his jacket and put on a sweater. Then he took off his shoes and put on a pair of sneakers. His name was Fred Rogers. He was starting a television program, aimed at children, called Mister Rogers’ Neighborhood. He had been on television before, but only as the voices and movements of puppets, on a program called The Children’s Corner. Now he was stepping in front of the camera as Mister Rogers, and he wanted to do things right, and whatever he did right, he wanted to repeat.