Seventy-five years later, the prisoner's dilemma narrative continues to impart new wisdom

Abstract

The prisoner's dilemma (PD) portrays the fundamental challenge of social interaction and ranks among the most-important models in the social sciences. Over the past two decades, the study of the PD has experienced a resurgence due to the introduction of concepts and techniques from statistical physics. In this Perspective, we recount the history of the substantive narrative underlying the PD to physicists who may not have encountered it yet and we show —on the narrative's 75th anniversary— that the original PD narrative hinted at a solution to the very problem of cooperation that it sought to describe. These hints at a solution to the PD foreshadowed a fascinating stream of contemporary research, thus further establishing the richness of the PD's narrative: 75 years after its inaugural articulation, the PD's substantive narrative continues to impart new wisdom.