friend of mine basically knocked over Itzhak Perlman once. He was going into Harrod’s in London, and Perlman was right behind him. Instead of making sure the person behind him had the door, my friend just let the door fly shut. After reconsidering, he turned around and found Perlman sprawled on the ground. He apologized and Perlman said “It’s OK, it happens all the time.” HAPPENS ALL THE TIME?