Second, Belichick is supremely self-confident. So much so that he doesn't feel the need to brag about how smart he is. Which means that he never talks about the innovations he has come up with and he is perfectly willing to keep secret innovations which allow him to keep winning. In the case of the fumble rate, it looks like starting in 2007, Belichick figured out how to change the game by changing how the Patriots approached fumbles. Since then, you haven't heard a peep out of Belichick on this innovation even though most other coaches would have been falling all over themselves to brag about how clever they were in coming up with a similar innovation.
Exactly, look how many other Coaches have gone to the hurry-up offense and wait and see how many will incorporate the unbalanced line with ineligible receivers next year, probably even that moron from the Ravens, Harbaugh will figure it out!
Go Pats!!