 The cause of the event should match the magnitude of the event. I hear things like, you know, you tell me 19 guys with box cutters brought down the World Trade Center buildings. You're telling me some lone loser like Lee Harvey Oswald killed the leader of the free world. You know, that kind of thing is what you hear. Because it doesn't feel right. The Holocaust was caused by the Nazis. There's a proportional balance there between the size of the event and the size of the cause.