Non sequitur (logic)
（重定向自Non seq）
A Non sequitur (Latin for "it does not follow"), in formal logic, is an argument with a conclusion that does not follow from its premises. In a non sequitur, the conclusion could be either true or false (because there is a disconnection between the premise and the conclusion), but the argument nonetheless asserts the conclusion to be true, and is thus fallacious. All invalid arguments are special cases of non sequitur. The term has special applicability in law, having a formal legal definition. Many types of known non sequitur argument forms have been classified into many types of logical fallacies.