Often Biden cannot finish a sentence. Names are vague eddies in his mind’s river of forgetfulness. He is in a far more dire mental state than a physically failing FDR was in his 1944 campaign for a fourth term.

The earlier career of a healthy Biden illustrates that he was not especially sharp even when in control of most of his faculties. We recall the former sane/nutty Biden of Neal Kinnock plagiarism, his “put y’all in chains” demagoguery, the studied racism of Biden’s riffs about a “clean” and well-spoken Obama, and the sane/insane Corn Pop stories. All are the trademark of a once fool Joe Biden, who was at least alert when compared with his current catalepsy. If Donald Trump can be ungrammatical, Biden is agrammatical — he simply streams together half-thoughts without syntax and then abandons the sentence entirely.

If Trump repeats vocabulary, Biden increasingly searches for words, any noun, whatever its irrelevance to the point he is making. Biden seems to suffer dyscognitive seizures, in which for moments he has no idea what he is doing or saying or where he is — a tragic, nearly epileptic condition. In scary episodes, the pale, scaly, and frozen visage of Biden appears almost reptilian, like a lizard freezing and remaining stationary as it struggles to process signals of perceived danger.