Stokes’ main objective is to show that atheists, who often pride themselves in their skepticism, are actually not skeptical enough. They are skeptical of religious claims, of course, but they are rarely skeptical of scientific claims, even though there is good reason to do so, which is what Stokes aims to show.
For instance, Stokes asks if primates should be good at science. In other words, if, according to evolution, we have evolved solely for the task of survival, then why would our minds come up with elaborate theories like that of evolution? Falling off a log is a very natural thing to do, but developing theoretical accounts of the world is unnatural, and not what one would expect from a world in which random natural selection were the truth. (p.50-51). If we are really taking skepticism seriously, shouldn’t we be skeptical in this way?
In the first half of the book, Stokes discusses the nature of science and its various limitations. He is not a science denier by any means, but argues that it is not as objective as some would claim. On p.102, he lists several scientific theories that were considered “beyond question during the height of their popularity,” but have now been proven to be false. “It seems that we should at least be wary about how much stock we put in current theories, given the frequency with which theories are overturned.” (p.104).
Stokes occasionally gets deep in the weeds with scientific detail, which I personally found hard to follow sometimes, and that’s why I found the second part of the book much more compelling, where he argues that “common sense morality is completely undone” if atheism is true. (p.151).
More specifically, he argues that if naturalism is true, then there is no morality; and, if there is such a thing as morality, then naturalism is false and theism is true. (p.158). Stokes notes that contemporary atheists don’t like the nihilistic implications of their worldview, so they seek to justify morality even while denying the existence of God. They will say that our moral judgments are merely the result of biological processes which are changing over time in the interest of human progress. But, if we are to be good skeptics, shouldn’t we ask some questions about this idea? For instance, as our moral beliefs evolve, why should we think they are getting closer to some moral ideal? By what outside standard do we measure that progress? “We can certainly say that we like our current set of ethical standards better than our previous ones, but can we say that they’re objectively better?” (p.177)
Stokes also makes the case that morality presupposes personal value, or what some person has decided is objectively good. Value is dependent on a “valuer,” and since the cosmos is impersonal and therefore unable to value anything, there can be no moral values in an impersonal universe (p.202f). As Nietzsche said, “nature is always value-less.” (p.227). Law makes no sense without a lawgiver. Morality implies moral obligation, and one can have such obligation only to a person or persons (p.205).
At the very least, atheists should be skeptical about criticisms regarding the alleged evils of organized religion. They can appeal to certain subjective preferences that they share with other atheists, but they can’t talk about something to which everyone everywhere is morally bound. “He might as well argue that his preference for chocolate over vanilla provides reasons for us to change our own preferences.” (p.234).
In the Christian worldview, the “cosmos is profoundly personal” (p.241), a place where the supreme lawgiver is God himself, and where moral goodness flows from what He values. Without him, we are left in a universe where there is “no evil, no good, nothing but pitiless indifference.” (p.236).