A Comment on Aumann's Bayesian View

Research output: Chapter in Book/Report/Conference proceedingChapter


In Aumann (1987), it is asserted that for those who adhere to the ". . . Bayesian view of the world, the notion of equilibrium is an unavoidable consequence. . ." I discuss two possible interpretations of the information model and show that neither interpretation supports this assertion. The hierarchy representation interpretation renders the prior stage meaningless and hence both the key assumption of Aumann's theory and its conclusion become impossible to interpret. The prior interpretation, on the other hand, is distinctively non-Bayesian. Furthermore, both the common prior assumption and the notion of having beliefs over one's own actions are problematic in the latter interpretation.

Original languageEnglish (US)
Title of host publicationWorld Scientific Series in Economic Theory
EditorsRobert J Aumann
PublisherWorld Scientific
Number of pages9
StatePublished - Dec 1 2023

Publication series

NameWorld Scientific Series in Economic Theory
ISSN (Print)2251-2071

All Science Journal Classification (ASJC) codes

  • Economics and Econometrics
  • Statistics, Probability and Uncertainty
  • Applied Mathematics
  • Statistics and Probability


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