D. M. Armstrong adopted fictionalism about these entities in arguing that objects are “aspects of, abstractions from” facts. In that book, Armstrong argues for a “combinatorial” view of these entities. (15[1])Accessibility relations between these entities (15[1])can impact truth (15[1])values in relational semantics. These entities are maximally connected objects in concretist definitions of them, which are opposed by Alvin Plantinga’s (*) abstractionist views. These entities were popularized to provide an extensional semantics to modal (10[1])logic since modal operators can be regarded as quantifiers over these entities. A “plurality” of these entities (10[1])exist according to David Lewis. (10[1])Rigid designators refer to the same thing across all of these entities. For (10[1])10 points, Gottfried Leibniz argued that we live in the best of what entities? ■END■