Hume's Dictum and Metaphysical Modality: Lewis's Combinatorialism
In Barry Loewer & Jonathan Schaffer (eds.), The Blackwell Companion to David Lewis. Blackwell (forthcoming)
| Abstract | Many contemporary philosophers accept Hume's Dictum (HD), according to which there are no metaphysically necessary connections between distinct, intrinsically typed entities. Tacit in Lewis's work is a potential motivation for HD, according to which one should accept HD as presupposed by the best account of the range of metaphysical possibilities---namely, a combinatorial account, applied to spatiotemporal fundamentalia. Here I elucidate and assess this Ludovician motivation for HD. After refining HD and surveying its key, recurrent role in Lewis’s work, I present Lewis’s appeal to HD as providing a broadly axiomatic generating basis for the space of metaphysical modality, and canvas the prima facie advantages of the resulting combinatorial principle---HD (L-combinatorialism)---as being principled, extensionally adequate and modally reductive. Most criticisms of Lewis's combinatorialism have targeted seeming ways in which the theory overgenerates the desired space; I rather argue that HD (L-combinatorialism) seriously undergenerates the desired space in three different ways. For each way I argue that available means of overcoming the undergeneration either fail to close the gap, undermine the claim that HD (L-combinatorialism) is a principled generator of metaphysical modal space, undermine the reductive status of Lewis's combinatorialism, or call into question the truth of HD. | |||||||||
| Keywords | David Lewis combinatorial account of modality metaphysical modality metaphysical possibility necessity Hume Hume's dictum combinatorialism necessary connections Humeanism | |||||||||
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David Efird & Tom Stoneham (2006). Combinatorialism and the Possibility of Nothing. Australasian Journal of Philosophy 84 (2):269 – 280.
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