Alias: Illicit Process of the Minor Term
Type: Illicit Process
Any form of categorical syllogism in which the minor term is distributed in the conclusion but not in the minor premiss.
|All terrorists are extremists.
All extremists are radicals.
Therefore, all radicals are terrorists.
|All whales are mammals.
All mammals are animals.
Therefore, all animals are whales.
This diagram represents both the Example and Counter-Example. It does not show the conclusion, "All S is P", to be true, which shows that both arguments are invalid.
"Illicit minor" does not refer to underage drinking, but to an illicit processthat is, distributionof the minor term in a categorical syllogism.
Sibling Fallacy: Illicit Major
Irving Copi & Carl Cohen, Introduction to Logic (Tenth Edition) (Prentice Hall, 1998), p. 277.