Tuning Out Theism: From Nothingness to Necessity and the Multiverse

The fine-tuning argument asserts that the life-permitting values of the universe’s fundamental constants are so improbable under Naturalism (N) that they favor Theism (T). Proponents of the fine tuning argument contend that the multiverse hypothesis fails to explain why this universe is fine-tuned. This paper challenges their position with three arguments in a Bayesian framework: (1) a maximal multiverse actualizes all possible universes, including this one, addressing their "this universe" objection; (2) the ex nihilo nihil fit principle renders the constants necessary under N, not contingent or improbable; and (3) denying ex nihilo nihil fit justifies an uncaused multiverse, further supporting N. These arguments elevate ( P(E|N) ), undermining T’s probabilistic advantage.