Presenter(s)  Type  Length  Chair  Room Number  Add to calendar  

Itzhak Gilboa  Keynote Address  31/08  11:00 CEST 
75
mins 
Andreu MasCollel

Auditori

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20230831 11:00:00
20240221 18:30:41
EEAESEM 2023: Schumpeter Lecture. Room: Auditori
How should we reason about uncertainty in the absence of objective probabilities? The common approach in economic theory is that the rational way to deal with such situations is Bayesian: using subjective probabilities when objective ones are not given and cannot be estimated. We take issue with this view. We adopt a pragmatic definition of rationality, which is based on the decision maker's willingness to change her supposedlyirrational behavior. With this definition in mind, we argue that it is sometimes more rational to admit that we do not know a distribution than to pretend we do. The attempt to convince decision makers to adopt certain modes of behavior calls for an axiomatic approach. In one paper we ask, what is a rational way to select a set of distributions, where a single one may be hard to pick? In another we study continuity with near zero probability, asking what is the exact behavioral meaning of "zero risk" policies.
How should we reason about uncertainty in the absence of objective probabilities? The common approach in economic theory is that the rational way to deal with such situations is Bayesian: using subjective probabilities when objective ones are not given and cannot be estimated. We take issue with this view. We adopt a pragmatic definition of rationality, which is based on the decision maker's willingness to change her supposedlyirrational behavior. With this definition in mind, we argue that it is sometimes more rational to admit that we do not know a distribution than to pretend we do. The attempt to convince decision makers to adopt certain modes of behavior calls for an axiomatic approach. In one paper we ask, what is a rational way to select a set of distributions, where a single one may be hard to pick? In another we study continuity with near zero probability, asking what is the exact behavioral meaning of "zero risk" policies.
EEAESEM 2023
congress@eeassoc.org
Europe/Rome
public

How should we reason about uncertainty in the absence of objective probabilities? The common approach in economic theory is that the rational way to deal with such situations is Bayesian: using subjective probabilities when objective ones are not given and cannot be estimated. We take issue with this view. We adopt a pragmatic definition of rationality, which is based on the decision maker's willingness to change her supposedlyirrational behavior. With this definition in mind, we argue that it is sometimes more rational to admit that we do not know a distribution than to pretend we do. The attempt to convince decision makers to adopt certain modes of behavior calls for an axiomatic approach. In one paper we ask, what is a rational way to select a set of distributions, where a single one may be hard to pick? In another we study continuity with near zero probability, asking what is the exact behavioral meaning of "zero risk" policies.