Table of Contents

Introduction The Problem of Cooperation * The Emergence Of Cooperation The Success of TIT for TAT in Computer Tournaments The Chronology of Cooperation * Cooperation Without Friendship Or Foresight The Live-and-Let-Live System in Trench Warfare in World War I The Evolution of Cooperation in Biological Systems (with William D. Hamilton) * Advice For Participants And Reformers How to Choose Effectively How to Promote Cooperation * Conclusions The Social Structure of Cooperation The Robustness of Reciprocity