Verisimilitude and Belief Revision. With a Focus on the Relevant Element Account
The expansion or revision of false theories by true evidence does not always increase their verisimilitude. After a comparison of different notions of verisimilitude the relation between verisimilitude and belief expansion or revision is investigated within the framework of the relevant element account. We are able to find certain interesting conditions under which both the expansion and the revision of theories by true evidence is guaranteed to increase their verisimilitude.
KeywordsBelief Revision Propositional Variable Relevant Element Conjunctive Part False Theory
For valuable help I am indepted to Theo Kuipers, Erik Olsson, Graham Oddie, Roberto Festa and Gustavo Cevolani.
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