As a comment on this Youtube
clip had it, "what happened to TV shows like this"? It's an excellent short little discussion program on Plato and Socrates that was evidently part of a series. The lights going out at the end with Mastermind type reprise on the trumpet, whilst host and guest continue their discussion, I suppose puts it around the early 80s.
Well, they stopped making them, that's what happened to them, although Professor Burnyeat and Mr. Magee, since they are both still breathing (another comment said Burnyeat "hadn't chanfed" [
sic]), could always get together for a reunion show - we'd happily host it at the PMC