D. M. Armstrong adopted fictionalism about these entities in arguing that objects are “aspects of, abstractions (-5[1])from” facts. In that book, Armstrong argues for a “combinatorial” view of these entities. Accessibility relations between these entities can impact (15[1])truth values in relational semantics. These entities are maximally connected objects in concretist definitions of them, which are opposed by Alvin Plantinga’s (15[1])(*) abstractionist views. These entities were popularized to provide an extensional semantics to modal logic since modal operators can be regarded as quantifiers over these entities. A “plurality” of these entities exist according to David Lewis. (10[1])Rigid (-5[1])designators refer to the same thing across (10[1])all of these entities. For (10[1])10 points, Gottfried Leibniz (-5[1])argued (10[1])that we live (10[1])in the best of what entities? ■END■ (10[2])