Why doesn't College Football go to radios in the QB's helmet? The NFL has been doing it for a long time with few issues. It seems silly that in college there are 3 or more guys signing in plays, using curtains to hide those callers, having coaches dressed in bright colors just to get a play in. I cannot imagine the time it takes to learn all the signs. Its would seem the whole process would be made simpler with just using the radios.