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    Carmelics

    A reasoning platform. Break down any belief into clear reasons, explore both sides, and weigh the evidence honestly.

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    Made withinDC&Austin
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    Home/Original/inverse
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    Inverse View

    It is not the case that Necessary truths are necessary in every possible world

    ?Set your confidence on the premises below to see your aggregate.

    Reasons For

    2 perspectives
    Reason for 1 of 2
    ?
    • 1.On David Lewis's modal realism, possible worlds are ontologically on a par, so no world has privileged access to which truths are 'necessary across all worlds'.
      ?

      Think about whether this reason is strong or weak

    • 2.The claim that necessity holds in every possible world presupposes a fixed modal space, but the cardinality and structure of that space is itself a substantive metaphysical posit, not a logical truth.
      ?

      Think about whether this reason is strong or weak

    • 3.Without an independent criterion for fixing modal space, the claim becomes circular: necessity is defined by possible worlds whose existence presupposes what counts as necessary.
      ?

      Think about whether this reason is strong or weak

    Reason for 2 of 2
    ?
    • 1.Modal facts themselves may be contingent: it is conceivable that the laws of logic could have been otherwise (Hartry Field, 'Is Mathematical Knowledge Just Logical Knowledge?').
      ?

      Think about whether this reason is strong or weak

    • 2.If modal facts are contingent, then what counts as necessary in one world need not be necessary in another, undermining cross-world necessity.
      ?

      Think about whether this reason is strong or weak

    Reasons Against

    1 perspective
    Reason against
    ?
    • 1.Necessity is not a matter of happenstance
      ?

      Think about whether this reason is strong or weak

    • 2.The necessary truths of our world hold without contingency
      ?

      Think about whether this reason is strong or weak

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