No matter how wonderfully last season might have gone for your NFL team, no matter how perfect its draft was and no matter how many helpful free agents it signed, there's still at least one glaring hole -- or at least one major question still to be answered.
This is true even for the league's best teams. The teams that come out on top in the end are the ones that best repair and/or overcome those holes.
The NFL's regular season is approaching with the controlled speed of a runaway cable car, and soon it will be time to find out which of the contenders' flaws will do them in and which will get fixed in time.