 It can be shown (see Weibull, 1995) that a weakly dominated strategy can never be an ESS. In the case of the game shown in figure 7, this is surprising because the equilibrium generated by the weakly dominated strategy is Pareto optimal and has a much higher expected payoff than any other Nash equilibrium. However, it is also the case (see Skyrms, 1996) that the replicator dynamics need not eliminate weakly dominated strategies. In fact, in chapter 2 of Evolution of the Social Contract, Brian Skyrms shows that there are some games in which the replicator dynamics almost always yields outcomes containing a weakly dominated strategy! This shows that there can be considerable disagreement between the evolutionary outcomes of the replicator dynamics and what the static approach identifies as an evolutionarily stable strategy.