There are literally thousands of examples of the unique adaptations that suit each type of organism for its special role in the web of life (Figure 9). The fantastic features of structure, function, and behavior that make the honeybee so wondrous, for example, are familiar to almost anyone. But then there's cleaning symbiosis; the explosive chemical defense system of the bombardier beetle; the navigational skills of migrating reptiles, birds, fish, and mammals, etc. Jobe Martin continues the list in a captivating series of videos called "Incredible Creatures That Defy Evolution."
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Figure 9. |
Let me single out one example for now. Take the woodpecker, for instance.
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Here's a bird that makes its living banging its head into trees. Whatever gave it the idea to do that in the first place? Was it frustration over losing the worm to the early bird? How did banging its head into trees increase its likelihood for survival — until
after
it had accumulated (by chance?) a thick skull with shock-absorbing tissues, muscles, etc.! What would be the survival value of all these features (and how could they build up in the population) until
after
the bird started banging its head into trees?
The woodpecker is a marvel of interdependent parts or "compound traits," now popularly called "irreducible complexity" — traits that depend on one another for
any
to have functional value. When a woodpecker slams its head into a tree, the deceleration experienced is many times gravity. The nerve and muscle coordination must produce a dead-on hit; a slip to one side or the other could virtually wrench the cover off the brain! The eyelids snap shut when the beak strikes its target. Some scientists say that's to keep wood chips out of the eyes; others say it's to keep the eyeballs from popping out of their sockets! Both may be right!
For such drilling, a woodpecker obviously needs a tough bill, heavy-duty skull, and shock-absorbing tissue between the two. But if the woodpecker were put together by time and chance, without any planning ahead, which part came first? Suppose, just by chance, a baby bird is born with a tough bill. It decides to try it out. WHACK! It throws its head into a tree. The bill is just fine, but it squishes in the front of its face. One dead bird, end of evolutionary story!
But maybe I got it backward. Maybe, just by chance, a baby bird was born with a heavy-duty skull. WHACK! It throws its head into a tree. This time its skull is okay, but its bill folds up like an accordion. There's no evolutionary future in that either!
In fact, neither the tough bill nor the heavy-duty skull would have any functional survival value until both occurred together — along with the shock-absorbing tissue, nerve and muscle coordination, etc.! That's no problem if the woodpecker were put together by plan, purpose, and a special act of creation. We expect drilling tools created by people to have interdependent parts that must all be completely assembled before the machine works. That's just good sense, and good science. We would surely expect no less from the perfect devices created by God!
There's more. At least since death entered the world, some woodpeckers are doing more than just drilling holes to store acorns. They're looking for bark beetles. The beetles hear all this pounding, of course, so they just crawl further down their tunnels. Some types of woodpeckers that are looking for bark beetles need more than just drilling tools; they need long, sticky tongues.
But if a bird gets a long, sticky tongue just by chance, what's it going to do with it? Dangling out of the bill, the tongue gets bit or even stepped on. As the bird is flying over a twig, the tongue could wrap around the twig and hang the hapless "pre-woodpecker." The answer for the woodpecker is to slip its tongue attachment into a muscular sheath that wraps around the skull
under
the scalp and inserts into the nostril! That makes good sense (and good science) if you're planning ahead, but poses real problems if your faith is in time and chance, trial and error. (Except in video games, you don't get another trial if the error is fatal!)
Evolutionists believe (like I once did) that all adaptations begin with time and chance, that is, with random changes in DNA and hereditary traits called mutations. In evolutionary theory, those chance mutations that suit an organism better to its environment are preserved by the process called natural selection. But natural selection can't act until the favored traits arise by mutation, i.e., by time and chance.
Well, what about mutations? Mutations certainly do occur, and they are responsible for perhaps 5,000 hereditary defects in human beings alone. Could mutations and selection working together (time, chance, struggle, and death, TCSD) produce the coordinated set of structural and behavioral adaptations necessary to originate the woodpecker? Let's see what two well-known biologists have to say about that.
Early creationists were primarily Christians, and that was often used as an excuse for ignoring their scientific arguments. When Michael Denton exposed
Evolution: A Theory in Crisis
to the secular community, a number of scientists got interested in design evidences divorced from deity, and the influential movement called
Intelligent Design
, or
ID,
was born.
Biochemist Michael Behe coined the term
irreducible complexity
, which has become the watchword for ID. Before it can function to catch mice, he illustrates, a mousetrap must have several parts working together (e.g., platform, spring, holding bar, hammer, catch). Its function is "irreducibly complex," i.e., it can't function at all with parts fewer than these. The same is true for many "molecular machines" within living cells, as Behe argues persuasively with multiple detailed examples in
Darwin's Black Box
(and as I tried to illustrate with the woodpecker above). The Darwinian concept of step-by-step evolution by mutation-selection requires
survival rewards
AT EACH STEP, and Darwin said his theory would be falsified by any example of adaptation that could not be built one step at a time. Behe falsifies Darwinian evolution many times over, but then continues on to present the scientific support for intelligent design on a secular basis.
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Here's a brilliant scientist whose observations of the living world force him to postulate at least an
impersonal creative force.
Here's a scientist who recognizes that intelligent design can be logically inferred from observations of certain kinds of order, even when he does not say who or what the creative agent is.
Garrett Hardin,
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a noted biologist and textbook author, seems to go even further than this in an old, but timeless,
Scientific American
book on adaptations and ecology,
39 Steps to Biology.
The first section, titled "Fearfully and Wonderfully Made" (a phrase from Psalm 139), describes several marvels of adaptation often used as evidence of creation. In the second section, "Nature's Challenges to Evolutionary Theory," Hardin discusses other remarkable relationships which, he says, "are only a few of the unsolved puzzles facing biologists who are committed to the Darwinian [evolutionary] theory." Then he openly wonders, "Is the [evolutionary] framework wrong?" That is, do our observations of the living world force us, at least for the present, to rule out evolution as an explanation for origins? (Figure 10).
Hardin doesn't stop there. He goes on to ask, "Was Paley right?" If you're like me, you never heard of William Paley, but Hardin explains. Paley was a thinker in the 18th century who argued that the kind of design we see in the living world points clearly to a Designer. Then the evolutionists came along in the 19th century and argued that they could explain design on the basis of time, chance, struggle, and death that did
not
require a Designer. Now, said Hardin in the 20th century, "Was Paley right" after all? Do the kinds of design features we see in living things point clearly to a Designer? Paley was not thinking of an "impersonal creative force"; he was thinking, instead, of a personal Creator God.
Hardin's conclusion?
"Think about it!"
(emphasis added).
Think About It!
"Think about it!" What a sane and yet sensational idea. What a rallying point for both creationists and evolutionists.
The Scopes trial showed it was foolish to teach only creation; is it any wiser to teach only evolution? A detailed doctoral study by Richard Bliss
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demonstrated that students using a two-model (creation-evolution) approach to origins showed more improvement in inquiry skills than those using the now traditional evolution-only approach. (By the way, the two-model students learned evolution concepts better than those taught evolution only.) Furthermore, a two-model approach cannot be accused of indoctrination; can evolution only? Surely, the only way students can "think about it" is when they have access to
all
the relevant data and the true academic freedom to explore
both
models of origin.
Figure 10. |
As Garrett Hardin so perceptively observes, the challenge to evolution does not come simply from a few religious fanatics. The challenge to evolution comes from the study of nature itself: "Nature's Challenges to Evolutionary Theory," he calls it. Even if various
pressure groups
(ironically operating under the guise of "academic freedom") succeed in
censoring
and
suppressing
all views except evolution, the case for creation will still be studied in science classes. The case for creation will be evident in sets of adaptations working together, such as we see in the woodpecker; in the growth and birth of a baby; and in the fantastic molecular integration within cells, such as the relationship between DNA and protein. Because of the way things have been made, the case for creation will always be present in the subject matter of science itself, especially in lab and field work.
We can differentiate the stone implements produced by human creative effort from those shaped by time, chance, and erosion. Similarly, we can distinguish created relationships among living things, such as those among the parts of a woodpecker, a growing baby, or a living cell.
One other special feature of creation is so obvious we often fail to notice it: its beauty. I once took my invertebrate zoology class to hear a lecture on marine life by a scientist who had just returned from a collecting trip to the Philippines. Toward the end of his lecture he described the brightly colored fish he had observed at a depth where all wavelengths of light were absorbed except for some blue. In their natural habitat, the fish could not even see their own bright colors, so what possible survival value could the genetic investment in this color have? Then he challenged the students to pose that question to their biology professors.
When my students asked me, I couldn't help thinking of Genesis 2:9, where God is described as creating plants both
"pleasant to the sight
and good for food." We normally expect to find aspects of beauty as well as usefulness in the artifacts of human creation; perhaps we should expect to find beauty in God's creation of life as well.