
The Challenge of Consciousness
The existence and reality of consciousness present one of the most pressing challenges to naturalism. As we have said, metaphysical naturalism is the view that only physical things exist. As a result, everything that exists should be describable in physical terminology, including properties such as weight, size, and location. But there are certain subjective aspects of the world that resist such explanation.
Analytic philosopher Paul Copan explains the challenge posed by consciousness:
Here’s the problem, though: When we consult physics textbooks to understand what matter is, there’s nothing psychological, subjective, or mental about matter. Matter might be described as having the properties of spatial location, spatial extension, weight, texture, color, shape, size, density, mass, or atomic or chemical composition. But what will always be missing in these textbooks describing matter is consciousness as a characteristic or property of matter. The assumption is that matter is different than mind. (Copan, HDYKYNW, 100, emphasis in original)
We’re left wondering: how could matter produce mind? How could nonconscious material produce consciousness?
Even atheist philosopher Thomas Nagel notes how consciousness raises a problem for naturalism:
Consciousness is the most conspicuous obstacle to a comprehensive naturalism that relies only on the resources of physical science. The existence of consciousness seems to imply that the physical description of the universe, in spite of its richness and explanatory power, is only part of the truth, and that the natural order is far less austere than it would be if physics and chemistry accounted for everything. If we take this problem seriously, and follow out its implications, it threatens to unravel the entire naturalistic world picture. Yet it is very difficult to imagine a viable alternative. (Nagel, MC, 35)
Josh McDowell, Sean McDowell. Evidence That Demands a Verdict: Life-Changing Truth for a Skeptical World.