In addition to what's already been said, I have a little more to add. It goes along with the "wedge strategy" and how the scientific process is being misrepresented in the whole ID argument.
The 'wedge strategy' was intended to do more than simply coat Creationism with fake scientific terminology and promote unsupportable conclusions. There is actually one science the right wing and the Evangelical think tanks are better at than the scientific community. That is the science of persuasion and marketing. This science is a key feature contained within the ID 'wedge strategy'.
Here are some of the techniques. First, when you lose your case in scientific circles, take your arguments directly to the less knowledgeable public. In the public arena, skill in the science of persuasion and marketing easily trumps skill in a scientific field and logical reasoning. As skeptics and scientists, many of us have yet to learn this fact.
In addition, since ID proponents did fail to convince the scientific community, it might also be difficult to debate the essence of the science. Yet a lot of the forums where ID proponents sought to bring their cause to the attention of the public were debate forums. What better place to pit your scientific claims against theirs than challenging scientists to debate the evidence in a public forum. Only one problem, ID would lose the debate if proponents based the arguments on evidence, even if they went out of their way to discredit credible evidence such as radio-isotope dating.
What do you do? You change the argument to one you can win. Thus comes the "fairness" and the "science is against religion" straw men arguments. Science is "unfairly" excluding ID from the evolution debate. Science excludes any evidence which supports religious beliefs.
"Persecution", always popular among Christians, science is against religion, or,
"Fairness", scientists are prematurely convinced and exclude any evidence from the evolution debate which contradicts the Theory of Evolution.
Those are obviously not the reasons science has discarded the ID hypothesis, but they make winnable straw men to battle in public debates.
ID arguments are straw men. We should address them and get the focus of the debate back to the real issues. Those would be the principles and evidence which prevented the ID hypothesis from ever becoming a valid argument within the scientific community.
Scientific principles:
- We know something about human design. We have no evidence all designers would be the same. We do have evidence some things which appeared to be human designs have turned out not to be. Therefore, science has no way to test for a designer, let alone a non-human intelligent designer.
- Science does include all viable hypotheses and theories.
- Science is concerned with the evidence. Whether or not that evidence supported some religious doctrine or belief would not be relevant.
Scientific evidence:
- The actual supporting evidence for ID is irreducible complexity.
- No example yet of irreducible complexity has been found.
- Michael Behe's research concluding the irreducible complexity of the bacterial flagellum has been debunked.
- Discoveries in genetic science have provided overwhelming evidence that irreducible complexity is not a supportable hypothesis.