Non sequitur

Non sequitur (Latin for “it does not follow”), in formal logic, is an argument in which its conclusion does not follow from its premises. In a non sequitur, the conclusion could be either true or false, but the argument is fallacious because there is a disconnection between the premises and the conclusion.

All invalid arguments are special cases of non sequitur.  Many types of known non sequitur argument forms have been classified into various logical fallacies, such as Affirming the ConsequentBegging the question and  Fallacies of Composition and Division.

The term has special applicability in law, having a formal legal definition.

 

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