In the third chapter of The God Delusion, Dawkins takes aim at many of the arguments that have been offered through the ages for an affirmative response to the "God Hypothesis". At times, especially in response to the argument from religious experience, his critique is cutting and enlightening. However, in many cases he misses the point, basing his refutations on incorrect understandings of what each argument is supposed to establish. Additionally, he doesn't bother to engage the work done in Philosophy of Religion in the last fifty years or so which has, incidentally, been characterized by a resurgence of serious consideration of theism. Instead he mostly deals with the arguments only in their nascent form. Since Dawkins is taking on intrinsically philosophical arguments here, it is a serious oversight to have overlooked all but his neighbor, Richard Swinburne. Although, considering his brutal treatment of Swinburne, perhaps other proponents of philosophical theism are glad to have been ignored. Here's a closer look...

In the second chapter of The God Delusion, Dawkins argues that the "God Hypothesis" is a scientific question, susceptible to the weight of scientific evidence, both for and against. He strongly rejects the approach of those like Eugenie Scott and Stephen Jay Gould who would relegate the question of God to its own category, immune from the methods of scientific inquiry. Science and religion just aren't talking about the same thing, they say. But in Dawkins' view, "God's existence or non-existence is a scientific fact about the universe, discoverable in principle if not in practice." (p. 73) Dawkins argues that, "the moment religion steps on science's turf and starts to meddle in the real world" (p. 84, emphasis mine), any supposed demarcation between questions of science and questions of theology is erased. I agree, provided that we deal with Dawkins' strong, implicit scientism. The Judeo-Christian religions are historical religions whose scriptures make countless claims about history in particular, but also about biology, cosmology, psychology, anthropology, and even God's supposed interventions in the natural world. As such, the "God Hypothesis" is indeed open to critical inquiry, including scientific inquiry, and many Christian thinkers through the centuries have welcomed it and pursued it. The problem is Dawkins' view that the answer to the God Hypothesis will be a "strictly scientific answer. The methods we should use to settle the matter [...] would be purely and entirely scientific methods." (pp. 82-83, emphasis mine) Here Dawkins is voicing a problematic epistemology that has been called "strong scientism".