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Logic  /  Logic 150  ·  Atom · ~20 seconds

Affirming the Consequent

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State

If p then q; q; therefore p. Invalid — always.

Show

If it rained, the street's wet. The street's wet. "So it rained" — or a hydrant burst.

Watch for

This is MP's evil twin, and it *feels* valid. Most real-world diagnostic errors are this form in a lab coat.

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