Another area has studied the [[prisoner's dilemma]], such as in a network where agents play amongst their nearest neighbors or a network where the agents can make mistakes from time to time and "evolve strategies".<ref name=Rosser1999/> In these models, the results show a system which displays "a pattern of constantly changing distributions of the strategies".<ref name=Rosser1999/> | Another area has studied the [[prisoner's dilemma]], such as in a network where agents play amongst their nearest neighbors or a network where the agents can make mistakes from time to time and "evolve strategies".<ref name=Rosser1999/> In these models, the results show a system which displays "a pattern of constantly changing distributions of the strategies".<ref name=Rosser1999/> |