AbstractWe develop a model of unforeseen contingencies. These are contingencies that are understood by economic agents - their consequences and probabilities are known - but are such that every description of such events necessarily leaves out relevant features that have a non-negligible impact on the parties' expected utilities. Using a simple co-insurance problem as a backdrop, we introduce a model where states are described in terms of objective features, and the description of an event specifies a finite number of such features. In this setting, unforeseen contingencies are present in the co-insurance problem when the first-best risk-sharing contract varies with the states of nature in a complex way that makes it highly sensitive to the component features of the states. In this environment, although agents can compute expected pay-offs, they are unable to include in any ex-ante agreement a description of the relevant contingencies that captures (even approximately) the relevant complexity of the risky environment.
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Bibliographic InfoPaper provided by Suntory and Toyota International Centres for Economics and Related Disciplines, LSE in its series STICERD - Theoretical Economics Paper Series with number 431.
Date of creation: Feb 2002
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Unforeseen contingencies; incomplete contracts; finite invariance; fine variability.;
Other versions of this item:
- Nabil Al-Najjar & Luca Anderlini & Leonardo Felli, 2002. "Unforeseen contingencies," LSE Research Online Documents on Economics 3578, London School of Economics and Political Science, LSE Library.
- Al-Najjar, Nabil I. & Anderlini, Luca & Felli, Leonardo, 2002. "Unforeseen Contingencies," CEPR Discussion Papers 3271, C.E.P.R. Discussion Papers.
- D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty
This paper has been announced in the following NEP Reports:
- NEP-ALL-2003-11-23 (All new papers)
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