The source defines simple conversion by making the first component of a proposition the second, and the second component the first. But mere word reversal is insufficient: truth must be preserved, and an affirmative remains affirmative while a negative remains negative. Simple conversion therefore includes both exchanging subject and predicate and choosing a form that follows logically.
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The book’s definition
Simple Conversion of Propositions: Definition, Method and Rules
The source defines simple conversion by making the first component of a proposition the second, and the second component the first. But mere word reversal is insufficient: truth must be preserved, and an affirmative remains affirmative while a negative remains negative. Simple conversion therefore includes both exchanging subject and predicate and choosing a form that follows logically.