Two days after President Donald Trump boasted he is "like, really smart" and "a very stable genius," the self-described "data schmoos" at factba.se concluded he has the vocabulary of a fourth grader -- the lowest of the past 15 U.S. presidents. They analyzed presidential utterances during news conferences, debates and interviews to surmise:
"By any metric to measure vocabulary, using more than a half dozen tests with different methodologies, Donald Trump has the most basic, most simplistically constructed, least diverse vocabulary of any president in the last 90 years. This is by a statistically significant margin in each case.