謬論
Paralogism \Pa*ral"o*gism\, n. [Gr. ?, fr. ? to reason falsely; ? beside + ? to reason, ? discourse, reason: cf. F. paralogisme.] (Logic) A reasoning which is false in point of form, that is, which is contrary to logical rules or formul[ae]; a formal fallacy, or pseudo-syllogism, in which the conclusion does not follow from the premises.
paralogism n : an unintentionally invalid argument