Not that I am trying to second guess Gokul, the representation of my understanding of the situation of two bulls and one calf is as table below. As you can see, obviously, the best result will come from both parties cooperating. But the prisoners dilemma dictates that if one should cooperate and other does not reciprocate, one's situation will drop to "low" whereas if one does not budge from one's uncooperative stance, one remains at "middle" which one may find acceptable. Who cares about the calf... bulls rule, one way or the other.