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    Lewis claims that quantifying over possible worlds in a p... — Carmelics
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    Challenges→Lewis's ontological commitment to possible worlds via the argument from Counterfactuals is insufficiently justified

    Lewis claims that quantifying over possible worlds in a paraphrase of our theories is permissible

    Modality & PossibilityPhilosophy of Language
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    Philosophy of LanguageModality & Possibility

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    An ontological commitment requires justification that the paraphrase permitting ...Lewis provides vanishingly little defence of why that paraphrase is permissibleLewis's ontological commitment to possible worlds via the argument from Counterf...

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    The short argument from Counterfactuals that I quoted seems deeply unQuinean. Rather than saying that possible worlds exist because they are quantified over in the best paraphrase of our theories, Lewis says they exist because they are quantified over in just one paraphrase of our theories. To be sure, he says this is a permissible paraphrase. On the other hand, there is vanishingly little defence of its permissibility.

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