Ignorant - factually unencumbered
Ignorant - knowledge-based nonpossessor.
Incompetent - Differently Qualified
Incompetent - Specially Skilled
Incompetent - Uniquely Proficient
Insane People - Mental Explorers
Some persons, when challenged about something they can’t defend, refuse to participate in a genuine discussion (and lack the politeness to agree to disagree). They imagine they can somehow give the impression — among the unintelligent anyway — that they have won the argument if only they can make the last post in the exchange, however irrelevant and unresponsive it may be.