Listen to the hostility by some of you. My, my. You must have been raised on nutrient-negative, white processed bread/pasta products. Perhaps Wonder Bread?
Do you know that that does to your mind due to lack of B vitamins in that stuff. That, or you're all a vested interest somehow who benefits from this financially in some way.
Bill Belichick learned to film signals of opponents from the former Chiefs, and Charger's coach Schottenheimer. Others like Edwards, Johnson and Cowher did too. They learned from the CHEATS and CHEATERS who still couldn't win.