 This latter argument taken to its logical conclusions, however, virtually entails occasionalism, that is, the view that at each moment God recreates the world, its atoms and accidents as well as all actions, whether that of a human or not, and so it is God alone who is occasioning the events that occur in our world. Indeed later theologians would embrace such an occasionalist worldview. Their preferred argument for occasionalism, however, was not the one sketched above, but one based on the notion of possibility  (istiṭāʿa).[3]  The argument roughly was that a creature only performs some action if it possesses the possibility to perform that action. Whenever the creature possesses this possibility, the possibility is either actualized or not. On the one hand, to affirm a non-actualized existing thing, such as an un-actualized possibility, is tantamount to affirming a non-existing existing thing, which is a patent contradiction. On the other hand, if the possibility is actualized, then the creature must be performing the correlative action, and will always be doing so when it possesses the actualized possibility, but of course created things sometimes act and sometimes do not. Therefore the possibility for a creature to perform any given action must be created for it at any time it acts, and it is God who is constantly creating the possibility to act, and so in effect the correlative action, at every moment something acts. In short, all agency must belong to God and God alone.