William Lane Craig: Does Epistemological Naturalism Imply Metaphysical Naturalism?

Epistemology is, loosely, the study of knowledge. It asks the question: "How does one go from mere belief to actual knowledge?" Epistemological Naturalism is the claim that knowledge can only be reached through the methods of the empirical sciences. Metaphysical Naturalism is the theory that the physical world is all that exists.

In this video, William Lane Craig points out two obvious problems with Epistemological Naturalism, and then argues that Epistemological Naturalism does not imply Metaphysical Naturalism.