Journal
JOURNAL OF POLITICAL ECONOMY
Volume 109, Issue 4, Pages 900-914Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/322083
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Consider the possible biological origin of the expected utility criterion. On the one hand, if individuals possess a utility function stemming from the rate of production of expected offspring, they can rapidly adapt to arbitrary unknown distributions in a bandit problem. Embedding such a utility function in a simple rule of thumb involving no beliefs about probabilities leads to evolutionary optimality. On the other hand, if any rule whatever yields evolutionary optimality for all distributions, this precise utility function must be implicit, in a revealed preference sense.
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