I just realised that there was a fatal flaw in the reasoning of my last post. By positing all possibilities as actuality in the way I described, I implied that all possibilities are eventually fulfilled. But if possibilities are only actual insofar as they are fulfilled then this leads to a very fatalistic understanding of time, because there are no possibilities other than what will be! I wish to maintain that possibility is actual in that it takes place within actuality, that which is.
Nevertheless, the possibility — and this is perhaps an unnecessary, tautologous qualification, but — the potential of that possibility should be distinct from its fulfillment. So, possibility as a whole encompasses actuality insofar as it is rooted in the present, that which could be, potential, but the totality of possibility maintains one foot outside of actuality, in non-being. An unfulfilled possibility which is no longer possible remains in history as a historical possibility, so in this case it has being, actuality, yet it never found completeness and thus remains forever as … half-being? (Though, of course, this is only if viewed in totality. The potential and fulfillment, and whatever other parts make up this possibility can be seen each as having respectively a being and non-being (or being if this is made reference to) fully in themselves). This can be illustrated with reference to an illustration from an earlier post. I have not yet learned to distinguish between probability and possibility, though in a literal sense the former appears much more biased! Arguendo I’ll equate them. If something has a 0.5 probability of coming into being, then, my lack of experience with probability notwithstanding, I assume that the possibility of being or non-being is equal. However if the probability is 1 then there is no possibility, only necessity, let’s say of being. Likewise, for 0, there is only necessity of non-being. Possibility, as it views from the perspective of the not yet, is awkwardly and beautifully thrust between being and non-being.