According to physicalism, what we ordinarily take to be a causally undetermined mental action is both caused and determined. But if physicalism is true, important elements of the first-person point of view are mistaken: Andrew Melnyk's choice to write his paper is not ultimately and irreducibly explained by a purpose, but by the nonpurposive causes of events in his brain. Physicalism implies that at bottom there are not purposive and causal explanations, but simply causal ones, and that there are not free and determined events, but only determined ones. Given these implications, why think that physicalism is true?
Most naturalists insist that there is no room for purpose or teleology in the universe. They hold that the origin and evolution of the universe was governed by blind processes, not by the conception of a goal or end. By contrast, theists see the contingent cosmos as explicable in terms of a conscious, purposive, and necessary divine reality. We shall argue that the very existence and nature of free will, purposive explanations, conscious minds, and the contingency of the cosmos are more reasonable given theism than given naturalism.
Unlike naturalists, theists can provide a good explanation of the emergence of consciousness because their worldview offers an explanatory framework in which the goodness of conscious life and libertarian free will provides the fundamental reason why conscious, free subjects exist. Contrary to Andrew Melnyk, human choices can only be explained in terms of purposes or reasons for acting, and they do not have causes. In addition, conscious states are intrinsically nonphysical and not made up of parts, while physical explanations of the intrinsic natures of things are typically couched in terms of part-whole compositional relationships.