the range of possible values and initial conditions compatible with the basic laws of physics allows for vastly and quantifiably more sterile universes than life-permitting universes. Since naturalism affirms the laws of physics as the ultimate realities and explanatory principles, the probability of a sterile universe given naturalism is vastly and quantifiably greater than that of a life-conducive universe. Thus, we have a quantifiably greater reason to expect a sterile universe given naturalism.
