This definition would preclude the search for extraterrestrial intelligence, and even evolutionist speculation.
The borderline between empiricism (or "science") and philosophy is blurry. Of great importance in this definitional debate is the fact that science presupposes metaphysical truths that, historically, derived from Christianity. Such truths include the idea that we can trust the evidence of our senses, that physical laws apply throughout the universe, and that the universe began from nothing. Christianity upholds these pre-scientific truths, while Modernism has abandoned them. The result is the intellectual disease of decontructionism/postmodernism.
“This definition would preclude the search for extraterrestrial intelligence, and even evolutionist speculation.”
Why? Extraterrestials would not be supernatural. And evolutionist speculation, why would that be affected?
The difference between science and ID is that science never says that trying to understand something is too difficult if we just rely on natural forces to explain it, so we’ll just throw up our hands and say it must be supernatural. That sort of thinking would have left science where it was in the Middle Ages.