The point of play action is to take advantage of defenses stacking the box and running to the LOS at the snap. You run a few run plays effectively and once you start noticing the defense moving closer and closer you throw it over the top. Most defenses will adjust and you will be able to run the ball effectively again. The problem with this game is we weren't doing anything to make Penn State stack the box and crash the line of scrimmage (ie running for a few nice gains first few plays/drives). Because we are so predictable by formation Penn State just decided they were going stack the box/crash the LOS from the get. At that point why keep running into a brick wall, you've already gotten the alignment play action is looking to take advantage of.
"You can't make me," Hoke said. "You're not my father."