Fan Essentials: Best NFL Coach

What makes a great NFL coach? From mastering the game to putting together the perfect game plan to connecting with players, many traits can be cited. But, the answer to the greatness question, frankly, is that it depends. It depends on the coach. It depends on the players. It depends on the game. It depends on a vast and forever shifting array of factors.
So, maybe what a great coach really needs is the ability to assimilate information, turn it into a viable strategy and execute it on the field