For the first time since late September, Notre Dame has experienced the pain of a loss.
The Irish were upset, 28-21, by Pittsburgh at Heinz Field Saturday evening. The Irish were doomed by three costly turnovers and inconsistent play on both sides of the ball, while the Panthers took advantage of nearly every Irish miscue.
Thus, much was left to be learned about the Irish.
Following are the 10 most significant lessons to be taken away.