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 Vol. 3, No. 3 

Page 5

March, 2001

External Evidences

The Truth of a
Typical Evolutionary Story

By David P. Everson

fallen log "The Tallest Tale Is the textbook version of giraffe evolution -- a bit of a stretch. By Stephen Jay Gould." So began an article in the May 1996, issue of Natural History magazine that caught my eye. As I continued to read, it became clear that this popular evolutionary writer, in a long flowery essay, was trying to make one point clear. That how the giraffe, with its long neck and legs, came about by evolutionary processes is unexplainable, and that the version found in so many textbooks in schools, IS FALSE.

Let's listen to his words:

I raise this theme because I recently realized that the primary "old standard," the classic textbook illustration of our preferences for Darwinian evolution, arose in the same manner as an entrenched and ubiquitous example based on an assumed weight of historical tradition that simply does not exist...I made a survey of all major high-school textbooks in biology. Every single one -- no exceptions -- began its chapter on evolution by first discussing Lamarck's theory of the inheritance of acquired characteristics, and then presenting Darwin's theory of natural selection as a preferable alternative. All texts then use the same example to illustrate Darwinian superiority -- the giraffe's neck. (pp. 18-19)

On the scientific accuracy of this theory:

Giraffes, we are told, got long necks in order to browse the leaves at the tops of acacia trees, thereby winning access to a steady source of food available to no other mammal. Larmarck, the texts continue, explained the evolution of long necks by arguing that giraffes stretched and stretched during life, elongated their necks in the process and then passed the benefits along to their offspring by altered heredity.

This lovely idea may embody the cardinal virtue of effort rewarded, but heredity, alas, does not operate in such a manner. A neck stretched during life cannot alter the genes that influence neck length and offspring cannot reap any genetic reward from parental striving. (pp 19-20)

On why this example of evolution with the giraffe's neck is bad, he says:

If we choose a weak and foolish speculation as a primary textbook illustration (falsely assuming that the tale possesses weight of history and a sanction in evidence), then we are in for trouble as critics properly nail the particular weakness and then assume that the whole theory must be in danger if supporters choose such a fatuous case as a primary illustration. (p. 56)

On why this falsehood is still in the textbooks he says:

In the realm of ideas, current use of the giraffe's neck as the classic case of Darwinian evolution does not grow from firm and continuous historical roots. The standard story, in fact, is both fatuous and unsupported...Why then have we been bamboozled into accepting the usual tale without questioning? I suspect two primary reasons, we love a sensible and satisfying story and we are disinclined to challenge apparent authority (such as textbooks). (p. 57)

His conclusion on this issue:

Darwinian evolution may be both true and powerful, but if we continue to illustrate our conviction with an indefensible, unsupported, entirely speculative and basically rather silly story, then we are clothing a thing of beauty in rags and we should be ashamed, "for the apparel oft proclaims the man." (p. 57)

Indeed Dr. Gould, the theory of evolution has been clothed in rags BECAUSE THAT IS ALL THEY HAVE TO PUT ON IT! They have presented their very best and it is still indefensible, unsupported, entirely speculative and a totally silly story. Bless be the God and Creator forever.

Venus Fly Trap

By David P. Everson

In the plant kingdom, there is a special group of plants that has sparked the imagination of many a science fiction writer. These plants, indeed, cause all of us to stop and look at them with a renewed sense of wonder at the great things the Lord has done. These plants are meat eaters -- carnivorous plants. This is a characteristic that God gave these plants to help them obtain vital minerals in swampy soil low in nutrients. They include, among others, the Pitcher plant, the Sundew (which lives in West Virginia) and the most famous, the Venus Fly Trap. Let's look at how this plant is able to detect and then catch something as elusive as a fly.

The Venus Fly Trap is a rather small plant, generally only growing four or five inches tall. It does carry on photosynthesis and so is a true plant, but the soil in which it is designed to grow is very low in necessary minerals, so the plant just catches them. The structure that it uses is a modified leaf. It is hinged at the middle to form a trap. The outside of the trap is lined with long pike-like extensions that form a nice barred cage long before the trap has completely closed. The inside of the trap is lined with very important trigger hairs. These hairs are the "eyes" of the trap. The cells lining the leaf have special digestive enzymes that can be secreted when a victim is caught. The leaf sits at the end of a stalk that puts the trap up where insects can get to it. Now, for the bait, this complex mechanism is not just a bare trap that snaps randomly or when a luckless insect falls into it. It is baited with a chemical produced by the cells that smells for all the world like rotting meat. What self-respecting fly would pass up that smell? Well, he wouldn't and he wanders onto the trap. Now, the interesting part begins.

How exactly does this trap know when to close and how does it close? Springs, pulleys, mechanical leverage? No, the mechanism is growth! When the proper signal has been sent, the cells on the outside of the leaf begin growing at a very rapid rate. With growth on the outside, but not on the inside, the leaf, in effect, closes on itself, curling inward. The opposite would be true when the trap needs to open. The cells on the inside grow and push the trap open. But, this method of operation does put a limit to how many times the trap can be opened, as it grows too large and will die.

Well, what are the proper signals that must be sent for this trap to be closed? It goes back as I said to the trigger hairs. There are several on both sides of the trap. But, a hapless fly touching one will not close the trap. This seems to be a protective mechanism that makes sure that dust, dirt or other miscellaneous material does not close the trap. It requires that two of the trigger hairs be touched or one hair touched twice within a matter of a few seconds. This touch causes an electrical change which seems to affect hormone release which starts the growth. Once the leaf has trapped an insect, the plant will press both sides of the leaf tightly against its victim. The release of digestive enzymes then dissolves the prey. Once the insect is gone, the leaf then opens again to wait for another luckless victim.

Indeed, this is a marvelous system that has been designed should cause each of us to wonder at the miracles of the creation. The Venus Fly Trap is also an example of how hard it is to imagine a method of evolution by accidents happening over thousands and thousands of years.

Copyright 2001 Louis Rushmore. All Rights Reserved.
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