It's a fair question. Of course, just like the Theory of Evolution, ID covers a pretty broad range of subjects. Your question more properly depends on what aspect of an ID hypothesis (and there could be a lot of parts) one was attempting to test. One wouldn't test the whole thing at once; rather, one would test on a particular phenomena. Would you care to be more specific?I choose Irreducible Complexity as the hypothesis, and the Krebs Cycle as the subject of the test.