 A phenomenon of greater interest occurs when we choose payoff values of \(T = 1.61, R = 1.01, P = 0\).01, and \(S = 0\). Here, the dynamics of local interaction lead to a world constantly in flux: under these values regions occupied predominantly by Cooperators may be successfully invaded by Defectors, and regions occupied predominantly by Defectors may be successfully invaded by Cooperators. In this model, there is no “stable strategy” in the traditional dynamical sense.  [5]