Logical Fallacies

Logical Fallacies / Propositional Fallacies

Propositional Fallacies

Logic formulas (affirming a disjunct: A or B; A; therefore not B), (affirming the consent: A, then B; B, therefore A), (denying the antecedent: If A, then B; not A, therefore not B).

Example of Propositional Fallacies

William Shatner is Captain Kirk or he is in Miss Congeniality. William Shatner is in Miss Congeniality. Therefore he is not Captain Kirk.

Alternative Name: Denying the Antecedent