Puts his players in positions/schemes where they feel most comfortable, coaches them up so they know their (often limited) roles to HIS standard, and this allows his teams to perform as close to mistake free as any team in the most stressful points of the game. When the other team starts to push, play beyond the scheme, do things out of character to change momentum, etc....mistakes inevitably happen and the Patriots capitalize.
Don't see how there is any debate who the best coach ever is at this point.
"What is a cynic? A man who knows the price of everything and the value of nothing"
- Oscar Wilde
I demolish my bridges behind me - then there is no choice but forward.
- Fridtjof Nansen