For millennia, man has practiced selective breeding on wild plants (horticulture) and animals (husbandry). Suppose we didn’t know that these domesticated plants and animals were the result of selective breeding. Suppose all we had to go by were the plants and animals.
If an evolutionary biologist who espouses naturalistic evolution or methodological naturalism examined these organisms, he’d automatically assume that they were the result of a nondirective process, even though, as we actually know, it required intelligent intervention to produce them. Are Darwinians prepared to recognize the hand of God? Even if organisms were, in fact, the product of divine engineering, Darwinians preemptively exclude that explanation.