“…It’s better to consider “so” and “oh” prefacing as two options among various ways of launching a new course of action, including “just starting” without a preface of any sort or seamlessly transitioning into a new topic via, for example, a stepwise topic shift (Jefferson, 1984). An examination of other ways to do topic initiations lies beyond the scope of the paper (but see, e.g., Button & Casey, 1984, 1985, 1988/1989; Local, 2004).…”