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Logic  /  Logic 103  ·  Atom · ~20 seconds

Illicit Major and Illicit Minor

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Distributing a term in the conclusion that wasn't distributed in its premise is an illicit process — illicit major or illicit minor, by which term offends.

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All dogs are mammals; no cats are dogs; ∴ no cats are mammals. "Mammals" distributed in the conclusion, undistributed in its premise. Illicit major.

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The conclusion claims more coverage than the premises purchased. That's the whole diagnosis.

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