re: This is really, really bad for the NFL

They know its dangerous to hit your head repeatedly and if they don't then they are morons. They get paid a shite ton of money to do so and a vast majority of the players that have permanent head trauma were in the league long enough to collect a pension.

They will be sued. They will lose billions. They will survive post-lawsuit. They will, from now on, make every player sign a release form/waiver about head injuries.