While I agree that the rules shouldn't be changed, what does need to change is the attitude towards concussive head injuries. I had a few bad ones in school and played through them, I had no idea how bad an idea that was. Kids who did know (and by senior year of high school this information was finally starting to trickle down.) and took time off to recover (for a bad concussion it's supposed to be 1-2 weeks depending on various memory function tests) were castigated by Coaches. Coaches had no idea how to recognize concussions. Our quarterback was sacked in a play and the coach called a timeout and, after trying to walk to the opponents sideline and obviously dazed, said to the coach "I don't know what I'm doing." He was being literal; he didn't know where he was. The coach said "you'e doing fine." and sent him back out.The NFL needs to talk about this and admit that this kind of thing happens because this was in a town where virtually everyone involved in the football program was college educated, and the kids were children of college educated people. If we barely knew what a concussion was I can't imagine what its like in places with less medical knowledge.