Logic / Logic 077 · Atom · ~20 seconds
Venn Diagrams for Statements
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Two overlapping circles diagram any categorical statement: shading marks a region empty; an X marks a region occupied.
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"No S are P" — shade the overlap. "Some S are P" — X in the overlap.
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Shading and X are different kinds of claims: emptiness versus existence. Never trade one for the other.