There are two camps starting to form when it comes to hitting. The modern camp, which we belong to, who uses science to figure out the best, most efficient swing possible and the traditional camp which building it's swing based on the hope of a weak defender.
The tradition swing is built to hit ground balls. Swing down, straight to the ball. We all have heard it.
The problem is if the pitcher wants to keep the ball low so that he does not get hurt by the fly ball and you are teaching to hit the ball on the ground. Why would you teach someone to do what your opponent is wanting you to do? That just makes no sense.
Recently I came across and article that talks in detail about this subject that I feel is worth y'alls read.