Come on, Oldie. You can't make this argument unless you yourself are a neurologist. And for the record, it's pretty clear that Trump has some mental deficiencies himself, but less cognitive and more personality driven. Sociopathic Narcissism? Maybe.
Trump thinks he is, and Biden forgets he is. To quote the great TBD philosopher, WHAT A MESS!
(President Adams, am I infringing on Irv's copyright here? Would quotes make it better?)