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    Putnam's argument against the brain-in-a-vat hypothesis i... — Carmelics
    Home/Skepticism
    HistoryEditSee Inverse

    Putnam's argument against the brain-in-a-vat hypothesis is viciously circular

    Philosophy of Language
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    • 1.Putnam's argument requires premise (ii) to be available to him
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    • 2.Premise (ii) is only available if Putnam is not a brain-in-a-vat
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    • 3.Putnam's argument is intended to prove that he is not a brain-in-a-vat
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    An argument that assumes its own conclusion is viciously circularPremise (ii) is only available if Putnam is not a brain-in-a-vatPutnam's argument is intended to prove that he is not a brain-in-a-vatPutnam's argument requires premise (ii) to be available to him

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    An argument against the brain-in-a-vat hypothesis that presupposes the...86%Putnam's argument is intended to prove that he is not a brain-in-a-vat84%What Putnam's argument actually establishes is that a brain in a vat's...83%Putnam's argument, as presented, fails to establish that we are not br...81%

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    AI-extracted1/3 agreementValid
    SEP: skepticism-content-externalism
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    … in taking premiss (ii) to be available to him, Putnam is in effect assuming that he is not a brain-in-a-vat. Since that is just what he is trying to prove, his argument is viciously circular. (2000: 186; his italics)
    Extraction notes

    Validity: Extracted via Max plan + API grounding/validity checks

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