 Advances in twentieth-century physics, including the theories of general and special relativity, chaos theory, and quantum theory, overturned the mechanical clockwork view of creation. In the latter half of the twentieth century, chaos theory and quantum physics have been explored as possible avenues to reinterpret divine action. John Polkinghorne (1998) proposed that chaos theory not only presents epistemological limits to what we can know about the world, but that it also provides the world with an “ontological openness” in which God can operate without violating the laws of nature. One difficulty with this model is that it moves from our knowledge of the world to assumptions about how the world is: does chaos theory mean that outcomes are genuinely undetermined, or that we as limited knowers cannot predict them? Robert Russell (2006) proposed that God acts in quantum events. This would allow God to directly act in nature without having to contravene the laws of nature. His is therefore a non-interventionist model: since, under the Copenhagen interpretation of quantum mechanics, there are no natural efficient causes at the quantum level, God is not reduced to a natural cause. Murphy (1995) outlined a similar bottom-up model where God acts in the space provided by quantum indeterminacy. These attempts to locate God’s actions either in chaos theory or quantum mechanics, which Lydia Jaeger (2012a) has termed “physicalism-plus-God”, have met with sharp criticism (e.g., Saunders 2002; Jaeger 2012a,b). After all, it is not even clear whether quantum theory would allow for free human action, let alone divine action, which we do not know much about (Jaeger 2012a). Next to this, William Carroll (2008), building on Thomistic philosophy, argues that authors such as Polkinghorne and Murphy are making a category mistake: God is not a cause in the way creatures are causes, competing with natural causes, and God does not need indeterminacy in order to act in the world. Rather, as primary cause God supports and grounds secondary causes. While this neo-Thomistic proposal is compatible with determinism (indeed, on this view, the precise details of physics do not matter much), it blurs the distinction between general and special divine action. Moreover, the Incarnation suggests that the idea of God as a cause among natural causes is not an alien idea in theology, and that God incarnate as Jesus at least sometimes acts as a natural cause (Sollereder 2015).