In a categorical proposition the subject is what the claim concerns; the predicate is what is affirmed or denied of it. Simple conversion exchanges their positions, keeping the complete meaning of each term intact.
“Some students are writers”:
Original subject — students.
Original predicate — writers.
Converse — “Some writers are students.”
The same overlapping individuals make both statements true. Conversion reverses the direction of attribution; it does not introduce a new property.
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Simple Conversion: Definition, Categorical Rules and Reductio
In a categorical proposition the subject is what the claim concerns; the predicate is what is affirmed or denied of it. Simple conversion exchanges their positions, keeping the complete meaning of each term intact.
“Some students are writers”:
Original subject — students.
Original predicate — writers.
Converse — “Some writers are students.”
The same overlapping individuals make both statements true. Conversion reverses the direction of attribution; it does not introduce a new property.