If Josh stops growing and learning, or if he regresses, he will not be. Same as any kid I hire out of college. Do I think Josh or any kid I hire out of college will stop learning and growing or regress? No. If I did, I wouldn't have hired them. If Beane and McDermott thought Josh would quit learning and growing, I'm 100% sure they wouldn't have drafted him. In fact, I'm 100% sure they would not draft any kid that they didn't think would continue learning and develop into a better player. Given the offense around Josh last year and the brand new unit around Josh this year, I'm encouraged by the progress he's made.
So, i'll play. If Josh takes the Bills to the Super Bowl next year and wins the MVP, I think he'll be the teams QB for the next 10 years.