One person isn’t a lecture, it’s lunch.
Three people is office hours.
Six people is a seminar.
At some point, we shift from interaction to performance–but the people are the same people, the very ones that were happy to simply sit and have lunch with us.
Bring in some cameras and it goes from a lecture to a broadcast. And that brings all sorts of other requirements, anxiety and noise.
Perhaps we should act as if it’s just lunch.