Well, I think their resumes can clear up who's the dumbest. Biden is from a modest middle-class (at best of times) family. No silver spoon there. He actually worked his way through university and law school with bona fide degrees in something of substance. His ranking upon graduation was in bottom one third but that was Syracuse and I imagine the competition was steep. We don't know what Trump's ranking or grades were because that's a secret. Like Trump, Biden dodged the Vietnam draft with school deferments and a questionable medical disability. Unlike Trump he's been a good family man and church goer. Like George VI, Biden struggled with a speech impediment (stuttering) that he worked hard to overcome in the political arena. It obviously affects his delivery in public speaking. Trump has an impediment too - he clearly cannot read. Only twice during his administration did I see him read off the monitor and it was painful to watch. His illiteracy and lack of real education are reflected daily in his social media posts. Unlike Trump, Biden had decades of political experience before becoming president. Can't have been too dumb to manage getting reelected so many times. Trump's experience in the public eye was a fake reality show and cheezy pizza commercials with his ex. Well, one of his exes. Yeah, I think it's pretty obvious who was the dumbest.