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Logic  /  Logic 331  ·  Atom · ~20 seconds

Strength Revisited

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State

Inductive strength comes in degrees and moves with evidence — new information can strengthen or weaken an argument without touching its form.

Show

Add one premise ("the sample was all volunteers") and a strong argument sags.

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Validity is immune to new premises; strength never is. That's the deepest difference between the two halves of logic.