 One answer to this question is that when agents repeatedly have to come to agreements with one another over the division of a good, but can only obtain a share of the good when they agree on a feasible division, agents who restrain themselves from pressing maximal claims are more likely to encounter other agents with whom feasible bargains are possible. In other words, as we saw in a slightly different context in section 2, in the long run the benefits from successfully coming to terms with like-minded agents outweigh the foregone gains that can occasionally be gotten by pressing for less equitable divisions. Skyrms tests this rationale by applying a dynamic model of evolution, the replicator dynamic, to his Nash Demand Game.  Figure 12  illustrates a simplex that one can use to summarize this dynamic.