After the recent Revenge of the Scopes Monkey Trial in Kansas, I've been thinking quite a bit about science, evolution, religion, and Intelligent Design.
After some reflection I realized that the real problem with the idea of Intelligent Design as a scientific theory (which is what proponents of Intelligent Design claim it to be) is that there can be no room for God in science.
I'm not claiming there is no room for God, just no room for God in science.
After Copernicus determined that the Earth circles the sun rather than vice-versa, people naturally asked what kept the Earth and the other planets circling. The popular answer was that God's angels pushed them in circles, so basically the answer came down to "God ordered it be done".
Isaac Newton rejected that notion and developed the Theory of Gravity. (Side note: Gravity is a scientific theory, not a fact, just like evolution. See my previous post on Evolution to learn more about the meaning of "theory" in science). Gravity replaced the angels with a natural force.
Therein lies the problem: once you claim that something happens because God wills it to be so, you have closed the door to finding the mechanism. The nature of gravitational attraction was discovered because "God said so" wasn't a good enough answer for Newton.
Intelligent Design poses the same problem for the Theory of Evolution. How and why do beneficial mutations occur in organisms? The current form of the Evolutionary Theory postulates that they occur randomly and that natural selection reinforces beneficial mutations while killing off negative ones. It may well be that this is not true -- perhaps there is underlying chemistry or some intricate interplay between energy flow and entropy that actual drives beneficial evolution. Personally, I do feel that the idea that the mutations are truly random may not suffice to explain the evolution of species. However, once you claim that beneficial mutations occur because God tweaks the process, you are closing off further investigation.
Science works only so long as a supernatural being is not changing the rules while the game is in play. Once you allow room for routine divine intervention in your theories, you can no longer make testable predictions (a cornerstone of scientific inquiry) because God can do whatever God wants.
Back to gravity for a moment: If you assume that objects don't float away from the ground because God doesn't want them to do so, then when you see a helium balloon the only possible explanation is that God wants it to float. You've learned nothing from your new evidence that not everything falls when dropped.
It may be that the Universe is exactly what God wants it to be, but you can't learn anything new if you are willing to say that everything that happens does so simply because God wants it that way.
Science is not a study of God. Science cannot do that by its very nature. Science is not anti-God, though. It just must never use "God's will" as an explanation or the process breaks. Science is the study of the machinery of the Universe, not the why. So, much though it may distress those who wish otherwise, there is no room for God in science.