Although I can't prove any of this scientifically,  I'm confident these widely held post-Week 5 theories are completely false:

1.      Travis Johnson is the bad guy in the Trent Green saga  -- Taunting the Dolphins quarterback when he was lying motionless on the ground was classless, but the Texans DT  is far from the problem here. The blame lies more with the Dolphins for playing Green in the first place.

Green has to retire. We've learned too much about head injuries to think Green would get through this season unscathed. If he doesn't want to call it quits, Dolphins coach Cam Cameron has to bench him permanently.  

On top of those issues, regardless of NFL rules, the block was dangerous to Johnson and could have cost the third-year player a shot at a long NFL career.

2. The Cards are much better off with Kurt Warner at QB instead of Matt Leinart  -- Warner will make mistakes that will cost the Cardinals games. If the Rams' DBs could catch, they would have had three picks Sunday. Warner has been able to put up numbers since he left the Rams ... it's the turnovers that have cost him.  Wait until Week 10 to assess the Cards' QB situation.

3. AFC South is the class of the NFL -- Don't be too quick to anoint any of the AFC South teams except Indy. The Texans and Titans looked flawed in wins over the Dolphins and Falcons, and the Jags typically start off hot and fall apart later. Look for everyone except the Colts to gravitate back toward .500 as they play more conference games.

4. Ravens D is back -- The Ravens moved up dramatically in defensive rankings after their 9-7 win over the 49ers. The NFL should list Baltimore's ranking with an asterisk, considering Baltimore beat up Trent Dilfer on Sunday.

The Ravens' D faces San Diego, New England and Indy later in the season. Ray Lewis, while still a brilliant on-field general, is a step slower and they miss Adalius Thomas. This is a good defense. Just not good enough to carry the Ravens like it has in years past.