For any proposition ask:
1. What are its subject and predicate?
2. Is it universal affirmative, universal negative, particular affirmative, or particular negative?
3. After exchanging the terms, which quantity is warranted?
4. Does the proposed converse really follow?
A grammatically complete sentence is not automatically a valid logical converse.
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A four-question conversion method
Simple Conversion of Propositions: Definition, Method and Rules
For any proposition ask:
1. What are its subject and predicate?
2. Is it universal affirmative, universal negative, particular affirmative, or particular negative?
3. After exchanging the terms, which quantity is warranted?
4. Does the proposed converse really follow?
A grammatically complete sentence is not automatically a valid logical converse.