Re:It is not the first (Score 1)

In the computer tournaments described in Axelrods book (The Evolution of Co-operation), Tit for Tat wins in BOTH rounds. What he does claim is that it depends largely on the kind of other agents present in the game: if you have one TFT against many "defect always", TFT will certainly lose. Anyway, this "victory" over tit for tat feels like a cheat: you have agents that are not selfish and exist only to lose...