re: Does the running game open up the passing game or vice versa?

At LSU I've always heard that the running game opens up the passing game. Yet, I've seen the passing game open up the running game for other schools. Like others have posted; play to your strength and open up your weakness. It just seems like the Coach is still not sure what the weakness is. He and his staff get paid a hell of a lot more than me to know strength versus weakness, but I-formation on 1st, 2nd, and 3rd down seams weak.