  Here the distinction between simple and structural states of affairs  together with the combinatorialist's strong notion of supervenience  come to the fore. For, given that structural facts supervene on  simple facts and the actual totality fact T@, the  actual world can be defined more parsimoniously as the molecular fact that includes all the simple atomic facts and the totality  fact T@. And at the level of simples, there are no  limitations whatever on recombination (Wittgenstein 1921,  2.062-2.063); hence, any recombination of simple objects and  universals is by definition considered possible. Thus Armstrong  (1986a, 579): 