Sublime

how cooperation can emerge among egoists without central authority.

TIT FOR TAT is merely the strategy of starting with cooperation, and thereafter doing what the other player did on the previous move.

All TFT did was cooperate on the first Prisoner’s Dilemma round, then in every subsequent round, it did whatever the opponent did previously—that is, if on the previous round the opponent cooperated, it cooperated on the next round; if the opponent betrayed, it betrayed on the next round. This simple program decimated the competition. So Axelrod ra