One immutable trait of the gullible is that they are credulous to a fault. Though no-doubt well-meaning, the naive are Trump's base.

Nothing is certain in life but death and taxes. And in Donald Trump's case, lies.

Maybe Trump isn't a racist in private. But he's sure acting like one in public. And his body language is corroborating the evidence.

Research indicates that a pause tends to be a signal that a cluster of deceptive cues is on its way. This is a key reason why voters routinely associate Trump with authenticity: He rarely pauses.

Con men look for human frailty to exploit. This is most often greed. Trump found a different vice: anger. The emotional are always the most susceptible to manipulation.

Any normal candidate who mocked the disabled or made crude reference to a woman's menstrual cycle or dabbled in 9/11 conspiracy theories would be out of the race. Trump's fans remain. And wait for more.