Why do coaches from the Belichick tree suck?

I see deposed New York Jets head coach Eric Mangini landed on his feet in Cleveland.

Good for him.

His in-game coaching was just as bad as that of Herman Edwards, but Eric was a nice guy and I wish him well.

Question: Why do coordinators from the Bill Belichick football coaching tree all fall on their face?

I'm sorry, but Mangini was a disappointment in New York.

Romeo Crennel flopped in Cleveland. Nick Saban blew in and out of Miami. And talk about Charlie Weis returning Notre Dame to prominence has just about subsided.

Do yourself a favor, football GMs:

Don't eat fruit plucked from the Belichick tree. It'll give you the runs.

That SOB Belichick is probably too miserable impart any knowledge on his assistants.