ID is not science, though. This is because
methodological (not philosophical) naturalism is, and always has been,
intrinsic to science, ever since its birth in its modern form at the Renaissance.
A moment's objective reflection shows why this is. If one observes a phenomenon in nature for which one cannot find a ready explanation, one has two possible courses:
1) one studies it, reports it and puts it aside until new observations and theories arise that might help to account for it, or
2) one declares it impossible to explain naturally and therefore God did it - a miracle, in short.
This is not an objective reflection rather a scientism approved one as that is not provable scientifically and mandates metaphysically intellectual processes to properly evaluate. Reflecting all investigations of science to those limited to natural causes disallows your reflections. Philosophical naturalism denies, ignores and fails to investigate alternate propositions of non-naturally induced causes that have natural effects, e.g., the Big Bang, the existence of the laws of physics, forces and their fine-tuning, the origin of life, the origin of consciousness.
The second course is, inevitably, a
science stopper. It encourages abandonment of the search for a future natural explanation. Where would we be today if science had believed this about the development of the eye? Or the bacterial flagellum? Or chirality? Research would have stopped and we would be no wiser. Whereas now we have explanations for two of these, and some exciting pointers towards the third. Science has worried away at these intractable phenomena and found (or is finding) explanations, given enough time.
None of this is scientifically limited, only ideologically limited by the pseudo-scientific belief system of philosophical naturalism.
For that reason alone, ID can never be science.
You are also quite wrong to claim that there is any sort of stranglehold of philosophical naturalists over science. It is true that there are many very vocal atheist scientists (Dawkins being possibly the most egregious - and in my opinion a bit silly about it) but
there are also many scientists with varying degrees of religious faith. Methodological naturalism, however,
is a requirement of science, because the purpose of science is to find natural, not supernatural, explanations.
This is not about religious convictions. If ID can never be science, then why are archaeology, anthropology, biomimetics, and psychology using it?
As the trial judge in the Dover School Trial (Kitzmiller et al) put it: " Expert testimony reveals that since the scientific revolution of the 16th and 17th centuries, science has been limited to the search for natural causes to explain natural phenomena.... While supernatural explanations may be important and have merit, they are not part of science." Methodological naturalism is thus "a paradigm of science." It is a "ground rule" that "requires scientists to seek explanations in the world around us based upon what we can observe, test, replicate, and verify.
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That is obviously spot-on. The same can be read here:
https://en.wikipedia.org/wiki/Naturalism_(philosophy)#Methodological_naturalism
There is nothing wrong with starting with purely natural causes and effects, but the increasing list of non-naturally produced causes and effects in the universe - Big Bang, origin of life - warrant an open-minded scientific approach. The trial judge was deceived to believe the closed-minded restriction of science, which began from Christian principles, prospered in Christian-cultured countries and produced the great founders of science from the perspective of better understanding God's creation using science. Science is God's invention, discovered by humans, to better understand all creation, not limit it to only natural phenomenon. This restriction is the goal of those who refuse metaphysical reality, with the resulting effect of denying God because many do not want to think there is anyone greater than themself.
I have to tell you that I, personally, actively despise ID, in a way that I do not despise creationists generally (though I consider them ill-informed). This is because ID is deceitful. It pretends to be science and not to be religious, when its sole purpose is social engineering to put God back into society (The Wedge document makes that very clear). This is not a scientific goal at all. So apart from the science-stopping nature of ID, which rules it out as a form of science in the first place, it stinks of deception and deviousness.