Primarily, though, Coyne focuses on the epistemological. He notes that religion has always advanced hypotheses about the cosmos and the origins of life—matters that he argues belong within the realm of science. He bluntly evaluates faith’s record of teachings about the natural world as a “failure of religion to find out the truth about anything.” Worse, he states, faith from the start leads humans toward “thinking that an adequate explanation can be based on what is personally appealing rather than on what stands the test of empirical study.”
Coyne is clear in his argument that to understand the cosmos there is no need of a “Creator.” What science says about the temporal nature of our own solar system, in fact, renders more than improbable the existence of a divine plan for humanity. “Human tenure on Earth,” he writes, “will end when the sun … vaporize[s] the Earth in less than five billion years,” while the universe “will also end [through] heat death,” with temperatures falling to absolute zero. What does this say for those who insist there’s a divine plan for mankind on Earth? The “God of the gaps,” Coyne argues, is losing out as science fills in the missing pieces.