ExpressionWhat it asserts
Only humans laughThe class of laughers is limited to humans
Every laugher is an animalLaughers belong to the broader animal class
Only humans are animalsNo non-human animals exist; not entailed
The fallacy transfers exclusivity of one property to exclusivity of a genus. A restriction must be kept within the scope it actually governs.
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Semantic Fallacies: Defects of Matter, Form, and Predication
ExpressionWhat it asserts
Only humans laughThe class of laughers is limited to humans
Every laugher is an animalLaughers belong to the broader animal class
Only humans are animalsNo non-human animals exist; not entailed
The fallacy transfers exclusivity of one property to exclusivity of a genus. A restriction must be kept within the scope it actually governs.