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On 2025-07-15 20:22, olcott wrote:
Mea culpa. I misread your second sentence as 'all lemons are not yellow. But my point remains.As a demonstration of the principle, consider two contradictory statements—"All lemons are yellow" and "Not all lemons are yellow"—No, it simply means we have posited a falsehood. Logic deals with false statements as much as it deals with true statements.
*and suppose that both are true*
>
Then we have shown that you just had a psychotic break from reality.
(and note that the above two sentences are not contradictory since they are both true in a universe which does not contain any lemons. Your scope of negation is off).
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