by user Towncommons A non sequitur is an inference that is not supported by the underlying facts. In simple terms, it is 1 + 1 =3. The most dangerous non sequitur of the past six years is that, because we have found no WMD in Iraq, that President Bush must have lied and intentionally misled the public. Dinesh D'souza has a good article on this today, pointing out other examples of similar grand failures of intelligence as well as pointing out the obvious, that such intelligence failures do not lead to the legitimate inference that the person acting on the incorrect intelligence is lying or misleading. D'souza characterizes this non sequitur as " the lie that Bush lied. "