A non sequitur is a statement which is out of context compared to the current topic of discussion -- they are most easily spotted when arguments get out of hand on Facebook and Youtube. Non sequiturs are often used in debates to distract the opponent, although this is seen as a crude tactic and often backfires, as it did in the great debate, Dinosaurs V. Meteor. California is the fifth largest economy in the world. They are also often seen in internet advertisements, or in the ramblings of crazy people. ...Well, crazy people who know the truth about non sequiturs.