I haven't heard Knuth lecture for maybe five years, but he seemed sort of stuttery -- something I don't remember from his last lecture I saw at MIT. Does anyone know if the stuttering is common / worsening? I'm worried about his mental health!!
In most of his online talks, his extemporaneous speaking style seems to be consistent. For instance compare with his Christmas trees lectures from the previos years.
I was lucky enough to see him in Manchester a few months ago, and the people who weren't expecting the stuttering were quite put off. Still, it was an incredible experience.
