How not to change the theory of theory change: A reply to Tennant

Sven Ove Hansson
Royal Institute of Technology, Stockholm
A number of seminal papers on the logic of belief change by Alchourrön, Gärden-fors, and Makinson have given rise to what is now known as the AGM paradigm. The present discussion note is a response to Neil Tennant's [1994], which aims at a critical appraisal of the AGM approach and the introduction of an alternative approach. We show that important parts of Tennants's critical remarks are based on misunderstandings or on lack of information. In the course of doing this, we attend to some central philosophical issues in the theory of belief change, such as the choice of a representation for belief states and the meaning of an idealized rational agent.
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DOI 10.1093/bjps/46.3.361
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On Having Bad Contractions, Or: No Room for Recovery.Neil Tennant - 1997 - Journal of Applied Non-Classical Logics 7 (1-2):241-266.
A Plea for Accuracy.Sven Ove Hansson & Hans Rott - 1998 - Journal of Applied Non-Classical Logics 8 (3):221-224.

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