The following cartoon accompanied the print version of Brian Kings’s article “The Prisoner’s Dilemma and The Evolution Of Morality” (Philosophy Now, Issue 109).  In this article, the writer explores the evolution of morality through game theory, specifically: The Prisoner’s Dilemma. This is a game that you “win” by getting the lowest number of years in jail. The outcome depends on whether or not you decide to rat out your partner in crime, thereby exemplifying either selfish or cooperative behaviour. Ideally, both partners would remain silent… ideally.
Feel free to read more about the game and its tenets here, which is summarized in the following image. https://en.wikipedia.org/wiki/Prisoner%27s_dilemma