Despite fierce debates within the field, evolutionary theorists all agree that our capacity to believe in God is hardwired into the physiology because it was directly or indirectly associated with trials that helped our ancestors adapt to their environment. That’s why arguments for God appeal to so many of us. That’s all there is to it. The clues are clues to nothing.
However, there are many who believe not only that the clue-killer argument has a final contradiction in it, but that it actually points to another clue for God.
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Evolutionists say that if God makes sense to us, it is not because he is really there, it’s only because that belief helped us survive and so we are hardwired for it. However, if we can’t trust our belief forming faculties to tell us the truth about God, why should we trust them to tell us the truth about anything, including evolutionary science? If our cognitive faculties only tell us what we need to survive, not what is true, why trust them about anything at all?
– Tim Keller, Reason for God: Belief in an Age of Skepticism, copyright 2008