Syllogistic fallacies are formal fallacies that occur in syllogisms. They include:
Any syllogism type (other than polysyllogism and disjunctive):
- fallacy of four terms
Occurring in categorical syllogisms:
- related to affirmative or negative premises:
- affirmative conclusion from a negative premise
- fallacy of exclusive premises
- negative conclusion from affirmative premises
- existential fallacy
- fallacy of the undistributed middle
- illicit major
- illicit minor
- fallacy of necessity
Occurring in disjunctive syllogisms:
- affirming a disjunct
Occurring in statistical syllogisms (dicto simpliciter fallacies):
- accident
- converse accident
Famous quotes containing the word fallacy:
“I’m not afraid of facts, I welcome facts but a congeries of facts is not equivalent to an idea. This is the essential fallacy of the so-called “scientific” mind. People who mistake facts for ideas are incomplete thinkers; they are gossips.”
—Cynthia Ozick (b. 1928)