Considers things that seem to appear and disappear, looking at things like the sun that merely disappears from view, as well as more complicated cases like puddles, noises, stones, and people, all of which appear and disappear in their own ways. "Things in this world are always appearing and disappearing. But does a stone really vanish when it turns into sand? And do lost socks really go missing? And, more importantly, do people ever really disappear?...