H. Allen Orr: Devolution

(Courtesy of Indie Wire: Intelligent Design Advocates Embrace Wingless Birds)

Devolution: Why Intelligent Design Isn’t.
by H. ALLEN ORR
The New Yorker

If you are in ninth grade and live in Dover, Pennsylvania, you are learning things in your biology class that differ considerably from what your peers just a few miles away are learning. In particular, you are learning that Darwin’s theory of evolution provides just one possible explanation of life, and that another is provided by something called intelligent design. You are being taught this not because of a recent breakthrough in some scientist’s laboratory but because the Dover Area School District’s board mandates it. In October, 2004, the board decreed that “students will be made aware of gaps/problems in Darwin’s theory and of other theories of evolution including, but not limited to, intelligent design.”

While the events in Dover have received a good deal of attention as a sign of the political times, there has been surprisingly little discussion of the science that’s said to underlie the theory of intelligent design, often called I.D. Many scientists avoid discussing I.D. for strategic reasons. If a scientific claim can be loosely defined as one that scientists take seriously enough to debate, then engaging the intelligent-design movement on scientific grounds, they worry, cedes what it most desires: recognition that its claims are legitimate scientific ones.

Meanwhile, proposals hostile to evolution are being considered in more than twenty states; earlier this month, a bill was introduced into the New York State Assembly calling for instruction in intelligent design for all public-school students. The Kansas State Board of Education is weighing new standards, drafted by supporters of intelligent design, that would encourage schoolteachers to challenge Darwinism. Senator Rick Santorum, a Pennsylvania Republican, has argued that “intelligent design is a legitimate scientific theory that should be taught in science classes.” An I.D.-friendly amendment that he sponsored to the No Child Left Behind Act—requiring public schools to help students understand why evolution “generates so much continuing controversy”—was overwhelmingly approved in the Senate. (The amendment was not included in the version of the bill that was signed into law, but similar language did appear in a conference report that accompanied it.) In the past few years, college students across the country have formed Intelligent Design and Evolution Awareness chapters. Clearly, a policy of limited scientific engagement has failed. So just what is this movement?

First of all, intelligent design is not what people often assume it is. For one thing, I.D. is not Biblical literalism. Unlike earlier generations of creationists—the so-called Young Earthers and scientific creationists—proponents of intelligent design do not believe that the universe was created in six days, that Earth is ten thousand years old, or that the fossil record was deposited during Noah’s flood. (Indeed, they shun the label “creationism” altogether.) Nor does I.D. flatly reject evolution: adherents freely admit that some evolutionary change occurred during the history of life on Earth. Although the movement is loosely allied with, and heavily funded by, various conservative Christian groups—and although I.D. plainly maintains that life was created—it is generally silent about the identity of the creator.

The movement’s main positive claim is that there are things in the world, most notably life, that cannot be accounted for by known natural causes and show features that, in any other context, we would attribute to intelligence. Living organisms are too complex to be explained by any natural—or, more precisely, by any mindless—process. Instead, the design inherent in organisms can be accounted for only by invoking a designer, and one who is very, very smart.

All of which puts I.D. squarely at odds with Darwin. Darwin’s theory of evolution was meant to show how the fantastically complex features of organisms—eyes, beaks, brains—could arise without the intervention of a designing mind. According to Darwinism, evolution largely reflects the combined action of random mutation and natural selection. A random mutation in an organism, like a random change in any finely tuned machine, is almost always bad. That’s why you don’t, screwdriver in hand, make arbitrary changes to the insides of your television. But, once in a great while, a random mutation in the DNA that makes up an organism’s genes slightly improves the function of some organ and thus the survival of the organism. In a species whose eye amounts to nothing more than a primitive patch of light-sensitive cells, a mutation that causes this patch to fold into a cup shape might have a survival advantage. While the old type of organism can tell only if the lights are on, the new type can detect the direction of any source of light or shadow. Since shadows sometimes mean predators, that can be valuable information. The new, improved type of organism will, therefore, be more common in the next generation. That’s natural selection. Repeated over billions of years, this process of incremental improvement should allow for the gradual emergence of organisms that are exquisitely adapted to their environments and that look for all the world as though they were designed. By 1870, about a decade after “The Origin of Species” was published, nearly all biologists agreed that life had evolved, and by 1940 or so most agreed that natural selection was a key force driving this evolution.

Advocates of intelligent design point to two developments that in their view undermine Darwinism. The first is the molecular revolution in biology. Beginning in the nineteen-fifties, molecular biologists revealed a staggering and unsuspected degree of complexity within the cells that make up all life. This complexity, I.D.’s defenders argue, lies beyond the abilities of Darwinism to explain. Second, they claim that new mathematical findings cast doubt on the power of natural selection. Selection may play a role in evolution, but it cannot accomplish what biologists suppose it can.

These claims have been championed by a tireless group of writers, most of them associated with the Center for Science and Culture at the Discovery Institute, a Seattle-based think tank that sponsors projects in science, religion, and national defense, among other areas. The center’s fellows and advisers—including the emeritus law professor Phillip E. Johnson, the philosopher Stephen C. Meyer, and the biologist Jonathan Wells—have published an astonishing number of articles and books that decry the ostensibly sad state of Darwinism and extoll the virtues of the design alternative. But Johnson, Meyer, and Wells, while highly visible, are mainly strategists and popularizers. The scientific leaders of the design movement are two scholars, one a biochemist and the other a mathematician. To assess intelligent design is to assess their arguments.

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