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Publication - Professor Richard Pettigrew

    Epistemic utility and the normativity of logic


    Pettigrew, R, 2018, ‘Epistemic utility and the normativity of logic’. Logos and Episteme, vol 8., pp. 455-492


    How does logic relate to rational belief? Is logic normative for belief, as some say? What, if anything, do facts about logical consequence tell us about norms of doxastic rationality? In this paper, we consider a range of putative logic-rationality bridge principles. These purport to relate facts about logical consequence to norms that govern the rationality of our beliefs and credences. To investigate these principles, we deploy a novel approach, namely, epistemic utility theory. That is, we assume that doxastic attitudes have different epistemic value depending on how accurately they represent the world. We then use the principles of decision theory to determine which of the putative logicrationality bridge principles we can derive from considerations of epistemic utility.

    Full details in the University publications repository