Update: I’ve been playing around a bit with prisoner’s dilemma simulations (not particularly ruthless ones). If nice retaliating strategies (like tit-for-tat) rise fast enough, then patches of unconditional cooperation can survive by leaning on them and each other. So it seems to works. My simulation wasn’t particularly ruthless, though.
Update: I’ve been playing around a bit with prisoner’s dilemma simulations (not particularly ruthless ones). If nice retaliating strategies (like tit-for-tat) rise fast enough, then patches of unconditional cooperation can survive by leaning on them and each other. So it seems to works. My simulation wasn’t particularly ruthless, though.