while he is terrorizing most of the world with his ignorance.

So are his deplorables - they wanted someone as stupid as themselves.

He doesn't even know what he doesn't know.

He clearly used it because he thought it made him sound smart.

And he always thinks he's the smartest guy in the room. Stupid people are not lacking in confidence.

=========

I know other dumbasses this effect applies to and they're mostly republicans.

rightness. Doubt never enters their minds. This is why they are so dangerous and so reluctant to seek out counsel from other, wiser people. It is a disastrous trait for a world leader to have.

How did he get to be president?

Considering that he knows nothing about international affairs, how in the world could he even consider himself qualified to run?

Ignorance is bliss. Tis true.

...that they like to have folks as stupid as them to serve in high positions.

Take a look at the following excerpt about Senator Roman Hruska, a right-wing Republican from Nebraska, who was defending Richard Nixon's ultimately doomed selection of Harrold Carswell as an Associate Justice on the US Supreme Court:

But it was his defense of President Richard M. Nixon's nominee to the Supreme Court, Judge G. Harrold Carswell of Tallahassee, Fla., that brought him some uncomfortable celebrity in 1970.

Liberal Democrats had mounted a strong campaign against Judge Carswell, a member of the Fifth Circuit Court of Appeals in Florida, contending that he was too ''mediocre'' to deserve a seat on the nation's highest court.

When Senator Hruska addressed the Senate in March 1970, speaking on Judge Carswell's behalf, he asked why mediocrity should be a disqualification for high office.

''Even if he were mediocre,'' Mr. Hruska declared, ''there are a lot of mediocre judges and people and lawyers. They are entitled to a little representation, aren't they, and a little chance? We can't have all Brandeises, Frankfurters and Cardozos.''

The Democrats gleefully jumped on Mr. Hruska's argument, reducing it to ''What's wrong with a little mediocrity?''

Mr. Hruska defended his remarks, arguing that the negative reaction had been inspired by hostility to Judge Carswell as a Southerner, not as a mediocrity.

The Carswell nomination was defeated, and the Supreme Court seat went to Harry S. Blackmun.

(emphasis added)

http://www.nytimes.com/1999/04/27/us/roman-l-hruska-dies-at-94-leading-senate-conservative.html