This article has multiple issues. Please help improve it or discuss these issues on the talk page. This article may be confusing or unclear to evolution and the theory of games pdf. Please help us clarify the article.
There might be a discussion about this on the talk page. To comply with the Wikipedia quality standards, this book-related article may require cleanup. This article contains very little context, or is unclear to readers who know little about the book. 1981 paper by political scientist Robert Axelrod and evolutionary biologist W.