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    David Lewis's modal realism treats possible worlds as con... — Carmelics
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    Challenges→It is impossible that nothing exists.

    David Lewis's modal realism treats possible worlds as concrete existents, meaning 'possible states of affairs' already presupposes a populated ontology of worlds.

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    Reasons For

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    Reason for
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    • 1.Modal talk ('possibly', 'necessarily') is ubiquitous in science and ordinary language, requiring genuine metaphysical grounding.
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    • 2.Concrete worlds explain modality without reducing it to linguistic convention or epistemic limitation.
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    • 3.Rival theories (abstract possible worlds, properties-based accounts) face their own ontological commitments equally burdensome.
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    Reasons Against

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    Reason against
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    • 1.Positing infinitely many concrete worlds with unobservable causal isolation is ontologically extravagant beyond explanatory necessity.
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    • 2.Modal realism struggles to explain why actuality is privileged if all worlds are equally real and concrete.
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    • 3.Possible worlds can be analyzed as mathematical structures or logical constructs, avoiding commitment to concrete parallel universes.
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    Natural Theology1 linked

    Related

    Concrete worlds explain modality without reducing it to linguistic convention or...It is impossible that nothing exists.Modal realism struggles to explain why actuality is privileged if all worlds are...Modal talk ('possibly', 'necessarily') is ubiquitous in science and ordinary lan...
    +3 moreShow less
    Positing infinitely many concrete worlds with unobservable causal isolation is o...Possible worlds can be analyzed as mathematical structures or logical constructs...Rival theories (abstract possible worlds, properties-based accounts) face their ...

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    claim
    Perspectives
    2 (1 for, 1 against)
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    1 edit