 At the same time, it should be recognized that showing that indeterminacy is a real feature of the world at the quantum level would have significant negative implications for the more general Causal Principle that underlies the deductive cosmological argument. The more this indeterminacy has ontological significance, the weaker is the Causal Principle. This is particularly important for subatomic events, which would characterize the beginning of the universe. However, if the indeterminacy has merely epistemic significance, it scarcely affects the Causal Principle. Quantum accounts allow for additional speculation regarding origins and structures of universes. In effect, whether Craig’s response to the quantum objection succeeds depends upon deeper issues, in particular, the epistemic and ontological status of quantum indeterminacy, the nature of the Big Bang as a quantum phenomenon, the nature and role of indeterminate causation, and whether realist theories about quantum phenomena have serious traction. Quantum physics is murky, as evidenced by Bell’s gedanken experiments, as described by Mermin (1985).