Remember Clinton campaign boss James Carville’s famous exclamation – “it’s the economy, stupid.” Well, when it comes to brain damage from playing football, the analogous revelation would be – “it’s the practices that can make you stupid,” especially those first practices before the game-playing season even begins. Ken Belson of the NY Times on making that medical observation into a player-protective imperative for colleges and high schools.  The pros and their player unions have already taken action.