Robert Axelrod, William D. Hamilton Distinguished University Professor Emeritus, recently broke down game theory strategy on the People I (Mostly) Admire podcast with Freakonomics author Steven Levitt. He explains how game theory and the prisoner's dilemma play out in current real world situations, tit-for-tat, and forgiveness.
"This is not a zero sum game," Axelrod explained. "We all tend to fall into zero sum thinking whenever there is a any kind of rivalry or any sort of competition because zero sum thinking is the easiest way to do it. But it's wrong and self-defeating in almost all contexts, except sports and all out war."