Desire beyond belief

David Lewis [1988; 1996] canvases an anti-Humean thesis about mental states: that the rational agent desires something to the extent that he or she believes it to be good. Lewis offers and refutes a decision-theoretic formulation of it, the `Desire-as- Belief Thesis'. Other authors have since added further negative results in the spirit of Lewis's. We explore ways of being anti-Humean that evade all these negative results. We begin by providing background on evidential decision theory and on Lewis's negative results. We then introduce what we call the indexicality loophole: if the goodness of a proposition is indexical, partly a function of an agent's mental state, then the negative results have no purchase. Thus we propose a variant of Desire-as- Belief that exploits this loophole. We argue that a number of meta-ethical positions are committed to just such indexicality. Indeed, we show that with one central sort of evaluative beliefÐthe belief that an option is rightÐthe indexicality loophole can be exploited in various interesting ways. Moreover, on some accounts, `good' is indexical in the same way. Thus, it seems that the anti-Humean can dodge the negative results.
Keywords Belief  Desire  Indexicality  Mental  Metaphysics  Lewis, D
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DOI 10.1080/713659805
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Steven Daskal (2010). Absolute Value as Belief. Philosophical Studies 148 (2):221 - 229.

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