There's a reason the great philosophers enjoyed their debates so well. Aristotle, Plato, Socrates... all of them knew how to engage and participate in a dialectic which served to broaden everyone's knowledge, while respecting their worthy debater...

And -- to your point, mobow -- besides being highly entertaining,the combined dialecticwas often the impetus or driving force forcreating a solution or settling on an idea that has stayed with us over the centuries. Ergo, in this case, possibly it could be Enigma.

-- Of course, I'm not suggesting Rob and I worthy to be included among those great philosphers of old... They debated our very existence at times; we'll just stick to camouflage! [8D]