Belief Revision with Revisable Logics

University essay from Lunds universitet/Teoretisk filosofi

Abstract: Belief revision is a theory of how an agent ought to change his or her beliefs in order to be considered rational. What's assumed is a formal language and a logical system which describe what consequences follow from an agent's beliefs. In addition, a list of postulates describe how the agent ought to do in order to be considered rational when revising his or her beliefs. This essay will try to integrate the logical system into the beliefs of the agent in order to make it as revisable as any other beliefs. The idea is based on Quine's idea that no statement is immune to revision and his idea of the web of belief. What will be looked upon is some ideas as to how to make this work and certain complications that these solutions give rise to.

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