Bill would get incensed if you messed with his plays. He knew they would work, but only if they were done exactly right. That’s why it was so important to him when he began hiring his assistant coaches at San Francisco that we be good teachers. He wanted things taught properly—his offense, of course, but then the defense, the special teams, the staff responsibilities. I think he felt those plays he was designing were very special, like a new invention that was guaranteed to work, but they wouldn’t work unless the coaches were good teachers.