Actually, you are trying to create a narrative that Trump himself could not grasp; the guy is dumb, no smart. Hillary listed several reasons why Trump may be hiding his Tax papers. As she was saying one of his reasons is he does not want people to see he pays no taxes Trump could not hold back, he just went snap like a kite string, and said, "That makes me smart."
Trump’s knee-jerk interruption;
1, is an admission he pays no taxes
2, undermined a main reason he refuses to release his taxes
3, shows he is unfit to be President as he;
A, speaks without forethought (spills the beans)
B, lacks basic diplomacy (respect for others who are speaking)
C, reveals his sociopathic behaviors in his words, acts and deeds.
4, insults all others who pay taxes as being dumb
Then, within hours after the debate, and when Trump was informed of his major mistake, he claimed his mic was defective and he never said those words. Thus Trump again confirmed he is also a pathological liar. Did I miss anything that his interruption cost him?
Trump is not too smart, but quite the opposite; "...no brains at all. Was stuffed with rice pudding between th' ears. Shortchanged by the Lord, and dumb as a jackass." A great quote from "Being There" which seems to sum up.