We saw a quote from Saints head coach Sean Payton recently about Doug Marrone who spent three years on Payton's staff before being named the head coach at Syracuse (his alma mater).
Payton said he knew Marrone was a great Xs and Os guy; but that's only half the battle in being a great coach.
Here's what Payton had to say, "He came in as the offensive line coach and the thing about Doug that I'm sure Syracuse has seen now is he's a tireless worker, it's all about football, it's very important to him, he's passionate, and he's a great staff guy in that he gets along well with everyone in the building. That kind of compatibility aspect of being an assistant coach is critical. It's as important as your ability to coach."
Lesson: Even if you're the smartest guy in the room, it's not going to work out in the long-term if people don't want to work with you.