The danger lies in forgetting what we had. The flow between generations becomes a trickle, grandchildren tape-recording grandparents' memories on special occasions perhaps-no casual storytelling jogged by daily life, there being no shared daily life what with migrations, exiles, diasporas, rendings, the search for work. Or there is a shared daily life riddled with holes of silence.
I can't imagine saying the same joke for three hours. I don't know how that would work.