What Do You Think of the PFF QB Grades?

I don't know how to model it as well because I think that the non-stationarities of the league are so substantial. Even evaluating Mahomes, like what kind of offense he's gonna be in in five years is a vexing question. But at the same time, you know, obviously the league is evolving the game and trying to change the rules such that quarterbacks are more protective from injury. So if we don't update our models or, or, or we don't have a conversation about what should go in those models, a quarterback could rank poorly or positively in that metric.