In his masterful introduction to Metaphysics, Peter van Inwagen points out why the cosmic fine-tuning argument (or the “teleological argument”) is ultimately indecisive in proving the existence of an intelligent designer of the world: As far as our present knowledge goes (aside from any divine revelations various individuals or groups may be privy to), we have no reason to prefer either of the following two hypotheses to the other: This is the only cosmos, and some rational being has (or... Read more