Your point that if I don't give the answer the audience literally has no choice but to make their own guesses, which can only be based on even less information
"The answer": heh. No doubt the audience members are collectively pleased to hear about how poorly informed they supposedly are.
My latest on Bloggingheads.tv is up. BHTV wanted someone to interview Aubrey de Grey of the Methuselah Foundation about basic research in antiagathics, and they picked me to do it. It made the interview somewhat difficult, since Aubrey and I already agree about most things, but we managed to soldier on. The interview is mostly Aubrey talking, as it should be.