Recreating Axelrod’s 1980s IPD Tournament: A Modern Reassessment of Tit-for-Tat’s Legacy
A team of researchers has resurrected Robert Axelrod’s second Iterated Prisoner’s Dilemma tournament by compiling the original Fortran strategies with contemporary tools and integrating them into the Axelrod‑Python library. Their reproduction confirms Tit‑for‑Tat’s dominance while revealing that newer strategies can outperform it under broader conditions, reshaping our understanding of cooperation’s evolution.