 Of course, possibilists who are more inclined toward the bi-modal conception will still prefer the original framing of the debate in terms of a primitive notion of actuality as per Poss and Act. But even the most committed bi-modalist will agree that contingent non-concreteness is at least necessarily coextensive with mere possibility and, hence, its complement with actuality. So, for those skeptical of the original framing, nothing essential to the debate is lost if it is simply understood in terms of concreteness as per \(\textbf{Poss}_{\sfC}\) and \(\textbf{Act}_{\sfC}\) .