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    If 'not all beliefs are true' is true, then Protagoras' d... — Carmelics
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    Supports→Protagoras' view that all beliefs are true entails a contradiction

    If 'not all beliefs are true' is true, then Protagoras' doctrine that all beliefs are true is false.

    ?Rate how convincing each reason is below to see the overall strength.
    1 reason for
    1 reason against

    Reasons For

    1 perspective
    Reason for
    ?
    • 1.Protagoras claims 'all beliefs are true'; this is itself a belief about beliefs that can be evaluated for truth.
      ?

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    • 2.If any belief can be false, then the universal claim 'all beliefs are true' is demonstrably false by counterexample.
      ?

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    • 3.Logic requires that contradictory propositions cannot both be true; thus one of these must be false.
      ?

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    Reasons Against

    1 perspective
    Reason against
    ?
    • 1.Protagoras may mean 'true-for-the-believer,' not objectively true, making the claim immune to standard logical refutation.
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    • 2.The statement 'not all beliefs are true' doesn't necessarily negate Protagoras; it could mean 'not all are true-for-everyone' instead.
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    • 3.Meta-level claims about belief-systems differ in logical type from first-order beliefs, so standard contradiction rules may not apply.
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    Truth & Knowledge1 linkedSkepticism1 linked

    Related

    If any belief can be false, then the universal claim 'all beliefs are true' is d...Logic requires that contradictory propositions cannot both be true; thus one of ...Meta-level claims about belief-systems differ in logical type from first-order b...Protagoras claims 'all beliefs are true'; this is itself a belief about beliefs ...
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    Protagoras may mean 'true-for-the-believer,' not objectively true, making the cl...Protagoras' view that all beliefs are true entails a contradictionThe statement 'not all beliefs are true' doesn't necessarily negate Protagoras; ...

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