"Billy's one and only moment of candor was when I parked him in front of my computer to play a game. He took one look at the Noah's Ark display and his whole face flinched like someone had hit him. He told me that the snow leopard is extinct. The last surviving specimen died in a zoo a few weeks back. "The snow leopard was my favorite," he said. Then he sat down at the computer and within about 30 seconds he was lost in a realistic prison interior, shooting the guards' heads off, blowing doors open, getting killed."