President Trump is belittling Biden’s intelligence, with an eye toward provoking Sleepy Joe into an overreaction. It could work.
In the spring of 1988, while campaigning for President in New Hampshire, Biden was asked about his education. The way Biden heard the question, the guy was making sure Biden had been to college.
Biden blew up, “. . . he started yelling how he’d graduated with three degrees, went to law school on scholarship, clawed his way up from the bottom of the class — or some bullshit — he offered to compare IQ’s . . . all with the chin out, the hectoring voice, like … . . I may be stupid but I’m Einstein next to you! . . . and Ruthie Berry and Jill . . . had to scurry in and steer Joe out of there. He coulda punched the guy out! Joe was always sensitive about his intellect . . .” [p. 480, What It Takes, by Richard Ben Cramer]
This came back to haunt Biden, since he was lying about his three degrees and scholarships. In addition to being a serial plagiarist, Biden just made things up, to make himself look good. That’s what drove him out of the race.
Biden combines an inferiority complex with an enormous opinion of himself. In other words, he’s a whack job.