Well, one thing that's important to remember here is that in the real world this game isn't played just once, when you have firms interacting with each other people making these decisions often times they have the chance to make the decisions over and over and over so when you have what's called a repeated game you might have a situation where people start testing out the waters to say well maybe if I cooperate the other guy's going to cooperate and then we can keep this going because to cooperate here and hope for the best outweighs, you know there's this threat of well if you try to screw me one time we're reverting back here actually gives in the long term an incentive to cooperate. 