A reader responds to this YouTube:
Absolutely riveting! Thanks for posting that!
A fascinating aspect: neither man is calm; both are clearly seething; each wants to put the other down, neither is really open to the other's point of view - and yet, as a matter of ironclad decorum, they affect the appearance of calm, they refrain from raising their voices, they respond to one another's points with care even though they don't remotely suppose they might convince one another.
Result: substantive things get said and arguments are advanced. Civilized form wins out over testosterone and adrenaline. In other words, a proper debate.
What killed this off? The dynamics of TV itself? The tastes of the mass public?
But we have the blogosphere.