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Line 1: − {{stub}}[[Image:X_mark.jpg|200px|right]]+ − [[Non sequitur]] ([[Latin]], "It does not follow") is any argument that moves from a premise to a conclusion with insufficient or no connection between the two.+ + − + + + + + + + − + − + − − == Reference == − * [http://creationwiki.org/Non_sequitur Non sequitur] by [[CreationWiki]] − + − + − <tr><td>{{fallacy|Non sequitur}} − <tr><td>Use the <nowiki>{{fallacy|Non sequitur}}</nowiki> template to insert this warning on a page containing a ''Non sequitur''. The template links the warning label to this page. − </table> − * [[Logical fallacy]] − + +
→Example: clean up & uniformity
'''''Non sequitur''''' ([[Latin]]: "It does not follow") is a [[logical fallacy]] that involves arguing from a [[premise]] to a [[conclusion]] with a lack of sufficient connection between the two.<ref name=Whitman>Glenn Whitman, [http://www.csun.edu/~dgw61315/fallacies.html#Non%20sequitur Non sequitur], ''Glen Whitman's Debate Page'', August 30, 2005. Retrieved April 9, 2007.</ref>
== Definitions ==
Classically, the term ''non sequitur'' applies to:
The most common example of ''non sequitur'' is any attempt to infer causation from correlation alone. An argument of causality--that is, that X caused Y--is always subject to weakening if one can show that:
# A conclusion that does not follow from the premises or evidence.<ref name=Heritage>[http://www.bartleby.com/61/61/N0146100.html Definition of non sequitur] in ''The American Heritage® Dictionary of the English Language'', 4th. ed., Houghton Mifflin Company, 2006. Retrieved April 9, 2007.</ref>
# A statement that does not necessarily follow from preceding statements.<ref name=Heritage/>
Some authorities use the term ''non sequitur'' to refer generally to any fallacy involving the introduction of irrelevant considerations.<ref name=Raveling>Paul Raveling, [http://www.sierrafoot.org/soapbox/fallacies/non_sequitur.html Non sequitur logical fallacies] at SierraFoot.org. Retrieved April 9, 2007.</ref> This, then, would include [[ad hominem]] and [[special pleading]].
== Example ==
The most common example of ''non sequitur'' is any attempt to infer causation from correlation alone. An argument of causality—that is, that X caused Y--is always subject to weakening if one can show that:
# Y could have occurred with or without X.
# Y could have occurred with or without X.
# Another event, Z, actually caused Y.
# Another event, Z, could have caused Y.
# Y caused X rather than X causing Y.
# Y caused X rather than X causing Y.
The usual way to weaken a ''non sequitur'' is simply to show that two facts, that might happen to correlate, are in fact not mutually relevant. Of course, showing that the chain of implication is reversed--meaning that the first named fact actually follows from the second, rather than the second from the first--will cast even more serious doubt on the argument.
The usual way to weaken a ''non sequitur'' is simply to show that two facts, that might happen to correlate, are in fact not mutually relevant. Of course, showing that the chain of implication is reversed—meaning that the first named fact actually follows from the second, rather than the second from the first—will cast even more serious doubt on the argument.
== See Also ==
== References ==
<table style="border:1px solid #AAAAAA; background: #EDF1F1; float:right; width:100px; margin-left:15px;">
<references/>
[[Category:Philosophy]]
[[Category:Logical Fallacies]]
[[Category:Liberal Traits]]