 Adams’ account centers around his notion of a world story, his own “actualistic treatment of possible worlds” (1981: 21). The intuitive idea is that a world story is a complete description of things as they are or could be. Adams’ (1974) initially spells this idea out as follows. Say that a set \(S\) of propositions is maximal if for any proposition \(p,\) \(S\) contains either \(p\) or its negation \(\neg  p,\)[82]  and that \(S\) is consistent if it is possible that all the members of \(S\) be (jointly) true; \(S,\) then, is a world story if it is both maximal and consistent, and a proposition \(p\) is true in a world story w just in case \(p\) is a member of \(w\). And a world story is true, or obtains, if all the propositions that are true in it are, in fact, true. (Henceforth in this section we will use “world” and “possible world” as synonyms for “world story”; and by “the actual world” we will mean the true world  story.[83])