The Coevolution of Altruism, Parochialism and War - Santa Fe Institute

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• The outcome is a horse race between the within group selection processes leading to the elimination of A’s within each group and the between group selection processes benefiting the A’s. • Most biologists have thought that the within group horse would win
Human distinctiveness to the rescue! • But humans, maybe uniquely among animals, proved very good at raising both the group benefits of altruism (b) and genetic and other differences between groups (P(A|A) - P(A|N)) and lowering the costs of being an altruist (c ), giving Darwin’s idea a chance. • The good news: leveling – monogamy, sharing food, -- lowered c • The bad news: hostility towards outsiders and frequent wars raised b and P(A|A) - P(A|N)
Page 1 and 2: The Coevolution of Altruism, Paroch
Page 3 and 4: Reproductive levelling Ethnic bound
Page 5 and 6: Peter Kropotkin ...mutual aid.. ..r
Page 7 and 8: Darwin’s idea, modernized • 0.
Page 9 and 10: Warning: group selection alert! •
Page 11 and 12: Evolutionary fate of an altruistic
Page 13: Why humans escaped the evolutionary
Page 17 and 18: Resource Sharing (Tax) on Evolution
Page 19 and 20: Co-evolution of individual behavior
Page 21 and 22: 1 Fraction of As 0.9 0.8 0.7 0.6 0.
Page 23 and 24: Darwin amended: Do we engage in mut
Page 25 and 26: Consider a population in which P T
Page 27 and 28: Does the model describe our ancestr
Page 29 and 30: Genetic differentiation & mortality
Page 31 and 32: War in hunter gatherer society: arc
Page 33 and 34: Archeological evidence: δ = % of d
Page 35 and 36: Were goups warlike enough and diffe
Page 37 and 38: Altruists Parochial Altruists Paroc
Page 39 and 40: Conclusion: • Under conditions ap
Page 41 and 42: Where does this leave us, as a spec

The Coevolution of Altruism, Parochialism and War - Santa Fe Institute

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