A candidate for what?
If you wish to compete in this arena, you need to produce a competing model that better mimics the natural phenomenon.
The alternate model is that some sort of intelligence played a role in the creation and/or development of life on Earth. That's the hypothesis. (Before we go around in a circle on this, please address the specific points I raised in my 1,000 nickels all heads up example -- specifically, if you came upon a pile of exactly 1,000 nickels all face up, would you assume the pile was natural or created? Please answer that question.)
The theory predicts that such an intelligence could leave traces in features of living organisms that cannot be explained away naturally. (Bnd before we go around in a circle on that point, consider the points I made about drawing distinctions between natural and created in many other fields of science.)
That they haven't found such evidence yet does not mean that ID is not science, any more than the fact that they haven't found traces of past or present life on Mars and aren't quite sure what to look for yet means that looking for life on Mars isn't science. Personally, I think it's wishful thinking and a waste of money but I wouldn't cliam that it's not a legitimate subject to investigate or that doing so isn't science.
Right! And let's not forget crystal healing, once I had the flu, and my sister dangled a healing crystal over me, and I was eventually cured! If that's not grist for the science mill, I don't know what is. I demand a warning label on all physics books, and a mere one hour of physics lecture time devoted to harnassing the powerful healing energy that ties healing crystals to the omega point energy grid. It's not like books at least as heavy as Behe's haven't been written about it. And let's not forget wikkan septagonal invocations--there has to be something to that, and the hollow and flat earth theories. You're such a parochial, narrow-minded IDist.
You can't derive history from structure. You can reasonably speculate that if you know the history of object A, and you find an object B that is very similar, then you know something about the history of B.
Interestingly, this is how Darwin derived the rules for natural selection. He spoke with large numbers of animal and plant breeders, noted the history of domesticated plants and animals, and speculated that the same rules of design and manufacture apply to all living things. The difference being that "wild" nature is a lot more wasteful and ruthless in pruning its populations.
"That they haven't found such evidence yet does not mean that ID is not science"