Think about this next time you are put under general anesthesia, which I hope neither you nor I will be anytime soon.
If you’ve ever tuned a violin, you’ll know that the arrangement of the fine tuners on the tailpiece, once you’re done, looks arbitrary.
Of course it’s the very same assumption at work in the evolution debate, on the part of those who dismiss the suppression of intelligent design dissidents.
If I gave you 15 seconds you could come up with a pat evolutionary just-so story to account for this, speculating on what reproductive advantage it serves.
Something immaterial can’t have an effect on the material realm, presumably, so how would it be selected as advantageous by Darwinian natural selection?