 and really it evolved into a defense that was outstanding against the pass, and the cover two principles are still used today. When you take a look at the success of the defensive coaches we just talked about, Bud Carson, Buddy Ryan, Dick LeBeau, how much is it that they're scheming, Ron, and how much of it is the athlete that they had playing the scheme? Well, it's always a combination, and I think that's the one thing that I noticed in studying the tape is they would always change. It wasn't like, you know, you play this system, it's etched in stone.