Thursday, 28 January 2016

Darwin loses to game theory

Understanding Why Cooperation and Generosity Win
"Ever since Darwin," Plotkin said, "biologists have been puzzled about why there is so much apparent cooperation, and even flat-out generosity and altruism, in nature. The literature on game theory has worked to explain why generosity arises. Our paper provides such an explanation for why we see so much generosity in front of us."

"Last year William Press and I proposed the 'extortion strategy' in the game of Prisoner's Dilemma, enabling one player to maintain a dominant position over the other," said Dyson, who is retired as a professor of physics at the Institute for Advanced Studies in Princeton, N.J. 

"One year later, Stewart and Plotkin turned our strategy upside down and showed that it enables one player to coax the other gently toward collaboration. They understood our strategy better than we did. They reached by rigorous mathematics the happy conclusion that, in a game between ruthless antagonists, generosity wins."