In my experience, most opponents and skeptics of theism reject theistic arguments on less than epistemically justifiable grounds. For example, premise one of the kalam cosmological argument proposes that “everything which begins to exist has a cause” (and concludes that since the universe began to exist, the universe has a cause). Some detractors of the argument will counter that since our only experience with cause and effect is within the spatio-temporal world, we cannot be certain that causation is possible outside the spatio-temporal world. While I think this is a fair point to consider, does it really undermine the premise, and hence the conclusion? It doesn’t seem to me that it does. While it is possible that the principle of cause and effect does not apply beyond the temporal framework of our universe, unless one can demonstrate that non-temporal causality is incoherent/impossible, the mere logically possibility that the principle of causality does not hold outside of the universe does not override the warrant we have for thinking all effects require an antecedent cause (and that contingent things require an external cause).

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