In this paper, I investígate a question in the Rhetoric surrounding the metaphorical sense of Aristotle’s topos: one can look to a location for “available means of persuasion,” evoking an image of seeing ; or topoi are viewed as “general lines of argument.” Are they places we go for arguments, or actual lines of arguments? The difference matters, given a propensity to view topoi as forerunners of argument schemes.

Borrowing from Plato, argumentation tends to imagine that invention is at home in the khôra—the space of the ideas—because it is the space for discovering and sorting argument options. In contrast, this paper suggests we re-conceive the idea of inventio as emerging possibility. Inventio is not only the process of sorting the set of possible arguments but is the possibility of the new idea itself; the idiomatic, the absolute surprise.