Duetting is a way of relating while talking. When words are used, there is a tendency for linguists to get involved, but duetting is less about language than it is about action – human inter-action that is expressed in movement of the body, face, and voice. Timing is important. Eye movements matter. Duetting reflects women's reactions to external events, but it responds to internal forces – emotions and memories and ongoing life events. Though much of this operates beneath the surface, it is, paradoxically, only the immediate experience of something that lies deeper still. For duetting expresses evolved dispositions for one woman to coordinate, perhaps even to coalesce, with another.