WFRF:(Baumann Dominik Ph.D. 1991 )
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Reply to "The Limitations of Growth-Optimal Approaches to Decision Making Under Uncertainty"
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- Hulme, Oliver (author)
- Copenhagen Univ Hosp Amager & Hvidovre, Danish Res Ctr Magnet Resonance, Copenhagen, Denmark.;Univ Copenhagen, Dept Psychol, Copenhagen, Denmark.
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- Vanhoyweghen, Arne (author)
- Vrije Univ Brussel, Data Lab, B-1050 Brussels, Belgium.;Vrije Univ Brussel, Mobilise, B-1050 Brussels, Belgium.
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- Connaughton, Colm (author)
- London Math Lab, London W6 8RH, England.;Univ Warwick, Math Inst, Coventry CV4 7AL, England.
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- Copenhagen Univ Hosp Amager & Hvidovre, Danish Res Ctr Magnet Resonance, Copenhagen, Denmark;Univ Copenhagen, Dept Psychol, Copenhagen, Denmark. Vrije Univ Brussel, Data Lab, B-1050 Brussels, Belgium.;Vrije Univ Brussel, Mobilise, B-1050 Brussels, Belgium. (creator_code:org_t)
- Institute of Spontaneous Order Economics, 2023
- 2023
- English.
- In: Econ Journal Watch. - : Institute of Spontaneous Order Economics. - 1933-527X. ; 20:2, s. 335-348
- Journal article (other academic/artistic)
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- In an article appearing concurrently with the present one, Matthew Ford and John Kay put forward their understanding of a decision theory which emerges in ergodicity economics. Their understanding leads them to believe that ergodicity economics evades the core problem of decisions under uncertainty and operates solely in a regime where there is no measurable uncertainty. If this were the case, then the authors' critical stance would be justified and, as the authors point out, the decision theory would yield only trivial results, identical to a flavor of expected-utility theory. Here we clarify that the critique is based on a theoretical misunderstanding, and that uncertainty-quantified in any reasonable way-is large in the regime where the model operates. Our resolution explains the success of recent laboratory experiments, where ergodicity economics makes predictions different from expected-utility theory, contrary to the claim of equivalence by Ford and Kay. Also, a state of the world is identified where ergodicity economics outperforms expected-utility theory empirically.
Subject headings
- SAMHÄLLSVETENSKAP -- Ekonomi och näringsliv -- Företagsekonomi (hsv//swe)
- SOCIAL SCIENCES -- Economics and Business -- Business Administration (hsv//eng)
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