The formal fallacy where the subject and the predicate terms of the proposition are switched (conversion ) in the conclusion, in a proposition that uses “all” in its premise (type “A” forms), or “some/not” (type “O” forms).
Examples:
- All Hollywood Squares contestants are bad actors. Therefore, all bad actors are Hollywood Squares contestants. Example #2 : Some people in the film industry do not win Oscars. Therefore, some Oscar winners are not people in the film industry.
Synonyms: illicit conversion, [illicit] inductive conversion