Let's say there is someone who makes the following argument: Darwinism is a scientific fact. We know that it works, and how it works, and we know that it is the explanation for life on earth as we know it - but Darwinism works as it does because God is guiding it. This is not my view, I don't believe in evolution, but my question is: By what scientific evidence (not arguments or logic but scientific evidence) can you prove this person wrong? Your disbelief in god is purely subjective, based on your own personal needs. Atheism is wish fulfilment.