Does An Evolutionary Explanation For God Imply That God Doesn’t Exist?

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One atheist proposed that we have a naturalistic explanation for why human beings believe in God. He explains that “We are of the opinion that religious [belief] in creator deities can be explained, fully secular, from an evolutionary standpoint.” He then rightly notes that this hasn’t been proven “conclusively” and admits that “there are hypotheses that do make a lot of sense.” His preferred hypothesis is the “hyperactive agency detection device.” (HADD)

HADD, to put it simply, is the inclination for animals, including humans, to presume the purposeful intervention of an intelligent agent in situations that may or may not involve one. Far from achieving any consensus, some have argued that belief in God, or creator gods, is an evolutionary by-product of agent detection. Though this may be true it is problematic as an argument in favour of atheism, namely that God does not exist.

Firstly, it is not the entire story. As psychologists Kurt Gray and Daniel Wegner realize, it is possible that agent detection might be a “foundation for human belief in God” (1). However, the pair explain that to claim that this somehow constitutes the whole picture is unwarranted since “simple over attribution of agency cannot entirely account for the belief in God…” because the human ability to form a theory of mind and what they refer to as “existential theory of mind” are also required to “give us the basic cognitive capacity to conceive of God.” So, this atheist’s preferred hypothesis doesn’t take him to his conclusion.

Secondly, he commits an elementary error in reasoning known as the Genetic Fallacy (GF). The GF is when one attempts to explain away, and undermine, a specific belief due to how that belief originated; philosopher William Craig explains that the GF “is the attempt to invalidate a position by showing how it originated. You try and invalidate a position by showing how a person came to believe that” (2). So, given evolution, is it not possible that God could have intervened in such a way as to bring about a knowledge of himself? Of course simply because he would have created and sustained the entire process. Philosopher Alvin Plantinga responds that “The theory of evolution doesn’t say that the whole process is guided by God. Of course it doesn’t say that. But it also doesn’t say that it isn’t. Being a scientific theory, it doesn’t make any statements on that point” (3). This atheist thus commits the GF through his attempt to explain away a belief (in God) by how humans inherited that belief (from evolution). Even the late atheist evolutionary biologist William Provine wouldn’t agree, “even if every case of theistic belief could plausibly be explained in terms of some naturalistic theory or other, that still wouldn’t exclude positive answers to the questions ‘Does God exist?’ and ‘Is belief in God warranted?’” (4).

So even if we grant the atheist his conclusion that belief in a god is merely the evolutionary by-product of agent detection it still doesn’t follow that a god does not exist. For an argument to be a persuasive one it has to have a conclusion that follows logically. However, even if we accept the HADD explanation for humanity’s belief in God it just does not follow that God doesn’t exist, and therefore the argument should be dismissed.


1. Gray, K. & Wegner, D. “Blaming God for Our Pain: Human Suffering and the Divine Mind” in Personality and Social Psychology Review 14 (1): 9–10.

2. Craig, W. 2007. The “New Atheist.”

3. Wilson, J. 2011. Q & A: Alvin Plantinga on Conflict Resolution with Science.

4. Provine, W. 1998. Scientists, Face it! Science and Religion are Incompatible.


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