We're wasting our time trying to invent different special kinds of intelligence (e.g., the odious, oxymoronic "emotional intelligence"),

for no better, transparently doomed purpose, than to make stupid people, and (face it) whole stupid races, feel less hopelessly stupid (which, sadly, makes them even more stupid, because there is, after all, nothing they can do about it)--when, what would really benefit us all, to be fully conscious and aware of, are the several ways that many members of our species actually have of being, when all is said and done, stupid. There is, for example, what we might call primary stupidity which consists of the inability to speak or think rationally: which is, for example of course, the outstanding mental deficiency of Donald Trump; which usually includes, as Trump's does, such secondary deficiencies as the inability to read or to write legibly. There is then what we might call the complementary stupidity, evidenced in Trump's loyal followers, which consists of the inability to perceive functional stupidity in others, and/or to believe that such stupidity is of no moral, rational or ethical consequence.

And there, in a nutshell, in Trump's stupidity (which is almost certainly genetic or physical in origin)--and in the refusal or inability, due to vanity or interest, on the part of both Trump and his supporters, to acknowledge his stupidity--are revealed the two fundamental causes of unreason (which is the essence of stupidity): (1) Ineptitude (or, if you will, incapacity) itself, and (2) dishonest mendacity which tries (with diminished capacity) to deny and conceal ineptitude: Witness Trump's searingly embarrassing explicit attempts to deny his stupidity and to call himself (Sic!) a "genius."   Whoa. Like nothing the world has seen in an incompetent head of state since--Well, the New Yorker says since Nero, but I'd say the nearer comparison would be Commodus or Caracalla, or (even closer to home) Heliogabalus.