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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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    LoyalLoyalJusticeJustice
    Made withinDC&Austin
    Statements
    321,452
    Perspectives
    108,905
    Topics
    42
    Home/Original/inverse
    See Original
    Inverse View

    It is not the case that This revision is equivalent to (D1).

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    Reasons For

    2 perspectives
    Reason for 1 of 2
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    • 1.Knowing that P is false is not equivalent to knowing the negation of P if propositional attitudes are hyperintensional.
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    • 2.A being could know 'not-P' without representing the distinct proposition 'P is false' under that description.
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    • 3.D1 and its revision thus differ in cognitive grain, making equivalence fail for minds sensitive to representational differences.
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    Reason for 2 of 2
    ?
    • 1.The revision smuggles in a disquotational assumption that every false proposition has a well-formed true negation expressible in the same language.
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    • 2.Priest and others in the dialetheist tradition argue some true contradictions resist clean negation into a distinct true proposition.
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    • 3.If any proposition is both true and false, the symmetry between D1 and its revision collapses, blocking the equivalence claim.
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    Reasons Against

    1 perspective
    Reason against
    ?
    • 1.For every false proposition there is a true one to the effect that the first one is false.
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    • 2.(D1) already requires an omniscient being to know the latter proposition.
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