So ID is an inference. That's a good and fine logical construct. When I do apologetics, I use inferential logic. I'm all for it. But that alone is not science.
Inferring the notion of ID would make a hypothesis, were it faslsifiable. But I can't fathom how one would construct an experiment, be it examination of the fossil record or whatever, to falsify the hypothesis. At best, results would be inconclusive, and the ID proponent could make another inference.
I've beaten this into the ground, but ID falls into the same fallacy as creationism, though it appears more sophisticated. As Westerners, we have accepted that science is the be-all, end-all of uncovering truth, and if something can't be proven scientifically, then we don't need to concern ourselves with it. That religious people even go to the trouble of coming up with things like ID means they have accepted this fallacy.
But that fallacy is like saying that the hammer is the be-all, end-all of tools, and if a job can't be done with a hammer, then it's not worth doing, and then going out and trying to build a house with just a hammer.
So the scientist, whose job it is to put up sheetrock and lay shingles, gets along OK, but the theologian, whose job it is to lay the foundation, looks like an idiot when he insists upon trying to do it with a hammer.
A. Scientist proposes evolutionary mechanism (hypothesis).
B. Scientist reviews fossil record or DNA to test hypothesis (experiment).
C. Hypothesis either is verified or falsified by experiment.
ID is a perfectly fine realm of study, in the sense that it looks at the body of data and infers the existence of creator. Great. I agree. I have discussions about this all the time on the philosophical and theological level.
But it's not science. And frankly, I hate it when it's used as science, because every new scientific discovery puts the theistic case into retreat. ID argues that some biological feature could not have devleoped on its own, then a biologist figures out the mechanism for its development, and the ID conception of God shrinks. It's called the god-of-the-gaps fallacy, and for as many ID proponents who say it isn't, well, sorry, it is.
Meanwhile, serious scientists are making discoveries that bring up ten new baffling and wondrous questions for every one they answer, getting all tingly and spiritual because of it, and yet the ID folks are nowhere to be found, because they're back making simplistic arguments about things long since settled.
My problem with the ID/evolution debate is not that I am an enemy of ID so much that the way proponents argue the case makes for terrible theology. We should have gotten past this notion that if we cannot explain it, God must have done it, long ago. God is bigger than just the things we don't understand yet about the world.