[quote]pushharder wrote:
DrSkeptix wrote:
pushharder wrote:
DrSkeptix wrote:
DrSkeptix wrote:
pushharder wrote:
Cockney Blue wrote:
…There are a number of hidden gems in the DNA structure and transfer of genetic material that completely support the fact of speciation through evolution…
Whiff.
You need to go back to the dugout and ask for the batboy job. You absolutely do not know what you’re talking about here.
…you will here lots of this through high school, undergraduate genetics studies and beyond.
The problem is it isn’t supported by the facts.
Oooh! A challenge!
Cytochrome c.
No takers?
How about the bacterial flagellum?
Or the eye?
The flagellum in itself is about as fascinatingly complex and well ordered that it defies any conjecture whatsoever that it could ever have developed randomly. It would have been virtually impossible.
Friend Push, I can’t believe you took the bait!
First, just two rules: 1. Occam’s razor. 2. Biologic theory may not be verifiable but it must be falsifiable. If you do not accept at least these two rules, you cannot discuss biologic science.
The flagellum, the eye, even my example of cytochrome c–all these are examples of anti-evolutions of the “watch on the heath” fallacy. (Watchmaker analogy - Wikipedia) If one encouters a watch in the field, who but an intelligent designer could have created it. It has “irreducible complexity;” of what good is any of its parts without the total, and it can have no viable precedents. But we know that this is not true of the watch, which has more than a thousand years of precedents, and it is not true of evolutionary biology.
In the case of the bacterial flagellum, how could all its parts simply congregate and be active, since no one part would be of use without the others. There could be no evolution from simpler forms.
But this is not so. The conjecture is sensible: CB200.1: Bacterial flagella and Irreducibly Complexity
We know the bacterial precendent: poison injecting mechanism of other bacteria. There are just nine sequential changes required to evolve from one form to another, and each one can be achieved by a single DNA point mutation, and each one leaves a viable organism.
This is not virtually impossible. I observe DNA mutations every day at work.
Is this explanation verifiable? Perhaps each intermediate form can be found, perhaps not. But not finding an intermediate form does not mean that no such form ever existed.
Is this explanation falsifiable? Yes. You could try to prove that the genetic changes are disallowed in nature. But so far as we know…
(Similar analyses of the evolutions of the eye and cytochrome c have been proposed, and are not falsified yet.)
Note, too, the last sentence of the cited index:
“Eubacterial flagella, archebacterial flagella, and cilia use entirely different designs for the same function. That is to be expected if they evolved separately, but it makes no sense if they were the work of the same designer.”
Now the Designer may move in mysterious ways, Its wonders to perform, but biologic theory, by Occam’s razor, disallows Its multiple magical interventions.
So, with respect, Friend Push, and even Friend Aragorn if he is reading, the wonder here is that we are given brains that can encompass these concepts, and to give credit to the Designer, we should all use those brains to further understanding and not defeat it.
Friend Skeptix, the bait may have been taken but you can’t land the fish. In regards to bacterial flagellum you would do well to read some of the works of Dr. Michael Behe, PHD. He received a chemistry degree with honors from Drexel U. and a doctorate in biochemistry at the the U. of Penn. After post-doctorate research at Penn and the National Institutes of Health, he joined the U. of Lehigh as professor.
Lehigh is no west Texas junior college. Its array of laboratories include the Complex Carbohydrate Research Lab, the Core Chromatography/Electrophoresis Lab, the Molecular Microbiology Research Lab, the Neuroendocrinology Lab, the Core DNA Lab, and the Virology Lab among others.
He has also served on the Molecular Biochemistry Review Panel of the Division of Molecular and Cellular Biosciences at the National Science Foundation as well as a prolific author of books and numerous articles in scientific journals as well as lecturer at dozens of prestigious institutions such as the Mayo Clinic, Yale, Carnegie-Mellon, the U of Aberdeen, Temple, Colgate, Notre Dame, and Princeton.
He is a member of the American Society for Biochemistry and Molecular Biology, the Society for Molecular Biology and Evolution and other professional organizations.
Now I went to all the trouble to impress you with this guy’s credentials to make a point, of course. He is no layman Pushharder yapping about biochemistry on a weight lifting website.
So when he talks about the world’s most efficient motor, the bacterial flagellum, saying,
“The flagellum is irreducibly complex…”
and when asked, “Has anyone been able to propose a step-by-step evolutionary explanation of of how a gradual process could have yielded a flagellum?”…
and he answers, “In a word - no. For most irreducibly complex systems, the best you get is a sort of hand-waving, cartoonish explanation, but certainly nothing that approaches being realistic…”
…THEN, I, Push Winchester Harder, sit up and take notice.
Others with an objective intellect might well do likewise.
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Push, I have an Honours degree in Chemistry from Manchester University (one of the finest research universities in the world) I am also a member of the Royal Society of Chemists and numerous other professional bodies. A number of my classmates had far more impressive credentials than I and went on to take PHDs. Of them, there were several who I wouldn’t trust to operate light switches unaided.
My point I guess is that it is not just the letters after the name but what is coming out of the guys mouth. Yes there are numerous wonderous solutions in nature. None of them are proof of anything more than variations and lots, and lots, and lots of time.
The problem that most people have with evolution is that it is really difficult to conceptualise quite how much time we are talking about. That is why animals with a short life cycle and computer models are so useful in showing that any solution can be found through the basic concepts of evolution.
The real strong evidence for evolution as far as I see it is not how perfectly we are designed but actually how badly. There are a number of parts of the design of human beings (and other animals) that only make sense if you have stepwise evolution. The solution to a problem at a given time was limited by the previous steps in the chain.
If you were setting out to design us from scratch, you would make a number of improvements on the model.