The subject is Necessity and Possibility, but in thinking about this metacosmic complementarity, it seems to me that it might be the principial formula for Origins, which is to say, “something from nothing,” AKA creatio ex nihilo.
And it’s not just something from nothing, but everything, which I suppose goes to the distinction between divine and human creativity.
Whether there are many universes or just one, in either case we face one serious problem: since the totality of universes is finite, there must be a limit of space, a “place” where space simply finishes. In other words, it is a place where something touches nothing.
Adding some intermediary bodies does not help, because ultimately, whatever the body might be, it must have dimensions and must touch nothingness that does not have any dimension or any other properties. Nothing can border with nothingness.
In our opinion the very existence of a finite universe is therefore impossible under natural conditions. But an infinite universe is not possible either. Hence, we need to postulate the existence of some immaterial supernatural power that constantly makes it possible for the universe to neighbor nothingness, i.e., to be spatially finite. Since the distance between nothingness and something is infinite, the power that creates the limits of the universe must also be infinite in order to overcome the distance.