I enjoy the fact that Patriot fans are now touting Belichick's scientific acumen over Bill Nye's. That guy is the Michael Jordan of science.
It's pretty clear that Belichick didn't know what he was talking about, and as he said, I'm no scientist. The Patriots do have a guy with a degree at DC.
That being said, Nye got it completely wrong. Belichick said (as Im sure he was told) friction causes PSI to go up, not down. And, there are dozens of professors backing Belichick up on the natural deflation of the ball from inside warm weather to outside colder weather.
Having never seen Nye speak before in my life, then yes, I would definitely tout Belichick's scientific acumen over Nye's for 2 reasons:
1. Balls naturally deflate due to air temperature
2. The question of whether friction causes deflation is irrelevant, since Belichick said nothing of the sort.