I’ve hardly ever seen someone who is so much smarter than they think they are. Usually most people think they’re smarter than they really are, not the other way around.
Just ask my wife, she will disabuse you of any incorrect assumptions.
And, she is in fact smart.
So you wonder how Grunt snagged such a smart one?
Well, for forty-some years she claims it was a mistake and one she would never repeat.
Most folks who are smarter than they think they are have the expectation that what they know, (almost) anyone else can, too. If they can teach what they know to (almost) anyone, they are invaluable.