Are You Going to Do That Defensively?

The ability on defense to take a player out of the game, there's some defensive coaches in this league that can do it. And there are others that refuse to try. So why don't more coaches do that though? Because that's good coaching. But it seems like people are stuck to their system and they won't deviate from it. Those are things you learn from guys like Parcells. Not everyone has the same bloodlines. Right.