Expeditio

Expeditio (ex-pe-di’-ti-o): After enumerating all possibilities by which something could have occurred, the speaker eliminates all but one (=apophasis). Although the Ad Herennium author lists expeditio as a figure, it is more properly considered a method of argument [and pattern of organization] (sometimes known as the “Method of Residues” when employed in refutation), and “Elimination Order” when employed to organize a speech. [The reference to ‘method’ hearkens back to the Ramist connection between organizational patterns of discourses and organizational pattern of arguments]).