theory: the way normal conversations *don't* die abruptly, reveals something bad about them. it proves they include mechanisms to continue talking even when no one has anything to say! this can go on so much people have to make excuses/leave to end them.
conversation similar to relationship. once ppl decide there is one, they all of a sudden start acting differently. and there are special rules to end one.
You reminded me of one of my favorite quotes:
"The real test of friendship is: can you literally do nothing with the other person? Can you enjoy those moments of life that are utterly
Yes, and are likewise difficult to leave-"even when no one has anything to say"!