Why does Herm always seem to see the light too late

[SouthernJet]

From the POST:

The Justin Miller experiment on punt returns is over. The rookie CB will continue to return kickoffs, where he's averaging 28.6 yards. WR Jerricho Cotchery will get more time returning punts and at receiver, where he's going to take some snaps away from Wayne Chrebet.

Duh,,,,it took him all preseason and 3 games to see these 2 moves were needed...explayers who are HCs always wait too late to make personell moves...