But is it better and more advanced medical knowledge that allows us to know the damage? Why should the NFL be responsible for years of playing as a kid, high school and college and then the NFL? Why don't I get personally paid from tobacco companies for starting smoking back in 1980?They should be liable insofar as they misled players about the risk. That could apply to older players or those who have been in the league for a while. It'd be harder for newer players to plead ignorance and blame the league. There have been several players in the past few years retire early and I expect that trend to continue.