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Atheist Forums › Science › Mathematics v
Post your favorite proof

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Post your favorite proof
BrianSoddingBoru4 Offline
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#21
RE: Post your favorite proof
April 19, 2022 at 1:41 pm
(April 18, 2022 at 5:35 pm)Klorophyll Wrote: Knock-down argument/proof against universal skepticism:

U: Universal skepticism: For any assertion P, we don't know if P is true or false.

Proof: The assertion U: "For any assertion P, we don't know if P is true or false" is either true or false. If it's true, we know at least that one assertion is true (U itself) therefore it's false. QED.

If someone is skeptical about skepticism, are they still a skeptic?

Boru
‘I can’t be having with this.’ - Esmeralda Weatherwax
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Atheist Forums › Science › Mathematics v
Post your favorite proof

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