Quote:I think the right one is next to impossible, if nothing else extremely costly.  Every time you tweak something to take one thing into account it's going to adjust and something else is going to lose value....so unless someone can make some sort of extremely complex algorithm that is able to distinguish between the importance of different plays its just tough.

 

Exactly.  If QBR were even possible (or relevant), teams wouldn't even need a scouting team.  It's just like the segment every week on Jaguars Monday when Boselli loses his mind over PFF grades.  When what you see doesn't match the grades, you have to make a leap of faith and say "if you say so".  Or you can just ignore it (which is usually the better option).   But in the end, if you ignore only what you don't agree with, then the grades just become your own opinion, which makes the grade itself an opinion.  This would never happen with QB rating.

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