"Indeed..? Many older than either of us don't, although I suppose times are changing, as they say."

He smiles to himself a little at that thought. ...of course, lots of schoolchildren in Kaitheny know what plasma is, but it's sort of unavoidable in Kaithenian popular culture, considering.

"I confess I am a little surprised you've missed out. Although I suppose I might have, myself, if not for certain childhood friends of mine..."