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    If validity depends on strict modal connection between an... — Carmelics
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    Challenges→An argument is sound when it is both valid and has true premises

    If validity depends on strict modal connection between antecedent and consequent, then truth of premises is insufficient for soundness without necessity of those truths.

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    1 reason for
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    Reasons For

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    Reason for
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    • 1.Soundness requires not just true premises but that conclusion must follow necessarily; contingent truths permit logically invalid inferences.
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    • 2.A valid argument with contingently true premises could be false in other possible worlds, failing to demonstrate genuine logical necessity.
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    • 3.Modal validity ensures the argument structure itself guarantees truth preservation across all possible scenarios, not just the actual world.
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    Reasons Against

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    Reason against
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    • 1.Soundness is standardly defined as valid argument plus true premises in the actual world; modal necessity is a separate, stronger requirement.
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    • 2.Conflating necessity of truth with validity conflates metaphysical modality with logical form; an argument can be valid without metaphysical modality.
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    • 3.Many sound arguments have contingent premises (e.g., empirical inductions); requiring necessary premises would eliminate most real-world reasoning.
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    Related

    A valid argument with contingently true premises could be false in other possibl...An argument is sound when it is both valid and has true premisesConflating necessity of truth with validity conflates metaphysical modality with...Many sound arguments have contingent premises (e.g., empirical inductions); requ...
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    Modal validity ensures the argument structure itself guarantees truth preservati...Soundness is standardly defined as valid argument plus true premises in the actu...Soundness requires not just true premises but that conclusion must follow necess...

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    2 (1 for, 1 against)
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