I always see the QB identifying a certain defensive player as the MIC. I know what it means.. that's not the issue, but why is it so crucial? It seems the first thing any QB does is identify that player, so it has to be extremely important. What I don't understand is the huge advantage after the fact... it's not like the defensive player is wearing an invisible cloak, I'm pretty sure the offensive line would attempt to block him regardless. Is it because the MIC position is often the one blitzing? I know the MIC makes the defensive calls and is the source of communication from the sidelines... but when both teams are at the line, the offensive play is already called as well as the defensive play.. can't understand why it's so crucial.