First published Mon Apr 22, 2002; substantive revision Thu Jun 29, 2023 Smiles, walks, dances, weddings, explosions, hiccups, hand-waves, arrivals and departures, births and deaths, thunder and lightning: the variety of the world seems to lie not only in the assortment of its ordinary citizens—animals, physical objects, social creatures of various kinds—but also in the sort of things that happen t