 Prescriptive metaphysics, by contrast, seeks to argue for particular metaphysical views that may not gel with commonsense or ordinary language. Prescriptive metaphysics often relies on the descriptive in order to advance its agenda—sometimes as a foil, other times as a baseline from which to deviate minimally only when required, or regarded as an oppressive thought system that we need liberation from, and so on. Often prescriptivists are descriptivists inasmuch as they attempt to ‘paraphrase’ their replacement ontology into the language of the folk and its implicit ontology, and the availability of such a paraphrase is sometimes thought to be required for the replacement ontology to be considered successful. Such a paraphrase requires doing descriptive metaphysics.