Piece in the WPost yesterday on the "tuck" rule. (Skins thought that Jake Plummer had fumbled into his own end zone last Sunday, but it was ruled a forward pass, hence the discussion.)
The way the rule reads now is roughly this: Once the quarterback starts his arm forward in a pass, it's an attempt to pass until he tucks the ball back to his body or starts a football move.) In the Denver game, Plummer started to pass, rather obviously changed his mind and pulled the ball down, but lost it in the process. The problem is the "obviously changed his mind"--that requires the officials to read the quarterback's mind to tell his intention. That's difficult for a bureaucrat. So the NFL doesn't want to change the rule, because what they have is based on visible moves, no mind reading required.
That's what bureaucrats like--objective evidence.