Actually, there is one sense in which products of natural selection are different from some products of intelligent design. Because organisms are designed incrementally, they have a certain jerry-built quality. If you were going to design a two-legged creature from scratch, rather than fashion one out of a four-legged creature, you'd do a better job than was done with us. (That's why so many of us have back trouble.) Then again, some products of human design have the same quality. Software often carries the legacy of its past incarnations with it during its evolution. So, I don't see how this "burden of history" feature of evolutionary design could be used to distinguish it from products of "intelligent design." And, indeed, this manifestly jerry-built feature of life—which has been widely documented in various species—is not the distinctive property of life's complexity that Dembski claims to have found. How could it be? It's a hallmark of incremental design, the very thing that Dembski, Behe, et. al. are so intent on minimizing.