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It is this thinking which allows many to extrapolate small evolutionary changes that are observed (microevolution) to rather large evolutionary changes (macroevolution). Thus, we can explain the later in terms of the former simply by adding enough time.
I think this is a crucial point. More and more biologists are arguing that morphological evolution is driven by changes in regulatory elements. In fact, some have even proposed that alterations in the patterns of gene regulation have been far more important in evolution than changes in protein function. But what does this mean? It would mean that all of the fossil evidence is largely the consequence of trivial evolutionary events that have little meaning for the origin of much cellular machinery. If most of evolution and the fossil record can be explained by changing the pattern of gene expression, then most of evolution and the fossil record is not relevant to questions about the origin of those genes or the basic process of gene expression itself. (1) might be vindicated at the level of organismic evolution, but at a very high price. That price being that almost all of the evidence of evolution now becomes irrelevant to the deeper aspects of life
If one desires to extrapolate small changes into large changes by simply adding time, one requires independent evidence to justify this move. The problem is that we really don't know how evolution occurs. And when talking about the evolution of the mammalian middle ear bones, we should not forget that we are still basically in the dark in trying to explain how both a mammalian and reptilian zygote actually develops the middle ear and jaw bones, respectively. Without this knowledge, attempts to explain such a transition as a function of a series of small, incremental changes stretched across time are rooted in ignorance. That is, we don't truly understand neither the process of development nor the process of evolution and without such knowledge, there is no reason to think we are on safe ground when employing (1).
Originally posted by Rren
What Byrd said:
He then abuses inductive thinking. Using his form of simplistic inductive reasoning, we can also argue:
* rabbits are carbon based life forms just like humans
* rabbits run around on land just like humans
* rabbits eat vegetables just like humans
* rabbits breathe air just like humans
* rabbits hear sounds just like humans
* rabbits are found in human households just like humans
*** THEREFORE - Rabbits Are Humans
This is what Dr. Rana said:from my original post top
Experts in inductive thinking will point out that the more objects taking part in an analogy, the more sound the conclusion arrived at through analogical reasoning.
Isn't the key here "the more objects taking part in an analogy" you had rabbits and humans in your example, am I missing something here? Doesn't he base his conclusion on inductive thinking 'protocols' and there are many of these structures not just a couple examples, so does that not add further weight to his analogy?
Originally posted by Rren
Now as i've stated earlier, I do not believe that evidence for micro-evolution is by proxy evidence for macro-evolution(species to species). That is simply an assumption/theory that doesn't seem to fit all the facts.
When we take into account irreducible complexity(the inability of a mechanism to function in its 'pre-evolved' state),
the astronomical odds of forming these protein structures(cellular machinery) by chance protein folding, etc.......leaves me with the belief that these traits scream of design and in fact the theory of intelligent design is based on what we see in nature and in our labs.
quote: When we take into account irreducible complexity(the inability of a mechanism to function in its 'pre-evolved' state),
Could you explain this? As far as I know, there's no "pre-evolved" states unless you count raw materials.
By irreducibly complex I mean a single system composed of several well-matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning. An irreducibly complex system cannot be produced directly (that is, by continuously improving the initial function, which continues to work by the same mechanism) by slight, successive modifications of a precursor system, because any precursor to an irreducibly complex system that is missing a part is by definition nonfunctional. Link
A single system composed of several well-matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning."
IC describes a system whose function is dependent on the interaction of multiple components, such that the removal of even one component results in the complete loss of function. IC can thus be represented as follows:
A + B + C + D ® F
where A,B,C, and D represent specific components (gene products) and F represents the function that is elicited by the interaction of these four parts. From this observation, it is commonly argued that that F could not possibly evolve, as F requires the presence of all four components. In other words, there would be no selective advantage of having parts A, B, and D compared to an organism having only parts A and B. Why? Because both combinations fail to elicit the function.
The basic flaw in this argument is as follows: While it is true that function F requires components A, B, C, and D to exist, it does not follow therefore that parts A,B,C, and D require function F to exist. And it is this basic flaw that has been exploited by the opponents of ID. There are three basic routes to circumvent the IC obstacle. Yet, while they exploit the inability to prove the impossible, whether they account for general explanations for the evolutionary origin of IC systems is highly doubtful. To see this, let's go back to the original IC formula, yet make one modification and discuss systems in which F is dependent on an IC state. That is, the function can only exist if multiple gene products interact with each other.more details and examples here
byrd: Erm... what do you define as a "species"? Is it the same definition I use?
Originally posted by Rren
It would mean that all of the fossil evidence is largely the consequence of trivial evolutionary events that have little meaning for the origin of much cellular machinery. If most of evolution and the fossil record can be explained by changing the pattern of gene expression, then most of evolution and the fossil record is not relevant to questions about the origin of those genes or the basic process of gene expression itself. (1) might be vindicated at the level of organismic evolution, but at a very high price. That price being that almost all of the evidence of evolution now becomes irrelevant to the deeper aspects of life
And when talking about the evolution of the mammalian middle ear bones, we should not forget that we are still basically in the dark in trying to explain how both a mammalian and reptilian zygote actually develops the middle ear and jaw bones, respectively. Without this knowledge, attempts to explain such a transition as a function of a series of small, incremental changes stretched across time are rooted in ignorance.
Now of course you can disagree, but to say that ID is not based on emperical science data is wholly unfounded.
When we take into account irreducible complexity
reptile, mammal, amphibian etc..is that not correct?
In summary, as biochemists have begun to examine apparently simple structures like cilia and flagella, they have discovered staggering complexity, with dozens or even hundreds of precisely tailored parts. It is very likely that many of the parts we have not considered here are required for any cilium to function in a cell. As the number of required parts increases, the difficulty of gradually putting the system together skyrockets, and the likelihood of indirect scenarios plummets. Darwin looks more and more forlorn. New research on the roles of the auxiliary proteins cannot simplify the irreducibly complex syetem. The intransigence of the problem cannot be alleviated; it will only get worse. Darwinian theory has given no explanation for the cilium or flagellum. The overwhelming complexity of the swimming systems push us to think it may never give an explanation.
(emphasis - Rren)
From: "Molecular Machines: Experimental Support for the Design Inference" by Michael J. Behe.
The components of cilia are single molecules. This means that there are no more black boxes to invoke; the complexity of the cilium is final, fundamental. And just as scientists, when they began to learn the complexities of the cell, realized how silly it was to think that life arose spontaneously in a single step or a few steps from ocean mud, so too we now realize that the complex cilium can not be reached in a single step or a few steps. But since the complexity of the cilium is irreducible, then it can not have functional precursors. Since the irreducibly complex cilium can not have functional precursors it can not be produced by natural selection, which requires a continuum of function to work. Natural selection is powerless when there is no function to select. We can go further and say that, if the cilium can not be produced by natural selection, then the cilium was designed.
ATP: The Perfect Energy Currency for the Cell By: Jerry Bergman, Ph.D.
Abstract
The major energy currency molecule of the cell, ATP, is evaluated in the context of creationism. This complex molecule is critical for all life from the simplest to the most complex. It is only one of millions of enormously intricate nanomachines that needs to have been designed in order for life to exist on earth. This motor is an excellent example of irreducible complexity because it is necessary in its entirety in order for even the simplest form of life to survive.
Originally posted by Rren
Adenosine Triphosphate Synthase Molecule
[align=center][/align]
ATP: The Perfect Energy Currency for the Cell By: Jerry Bergman, Ph.D.
Abstract
The major energy currency molecule of the cell, ATP, is evaluated in the context of creationism. This complex molecule is critical for all life from the simplest to the most complex. It is only one of millions of enormously intricate nanomachines that needs to have been designed in order for life to exist on earth. This motor is an excellent example of irreducible complexity because it is necessary in its entirety in order for even the simplest form of life to survive.
(emphasis -Rren)Please give me the step by step process responsible for the ATP molecule, via natural selection, that refutes the ID claim that it's irreducibly complex...meeting Darwin's standards for verifing it was built via NS.
Furthermore recently [j] a novel metabolic pathway, that degrades the toxic chemical pentachlorophenol (PCP), has been discovered in a bacteria called Sphingomonas chlorophenolica. This pathway provides the only source of carbon for the bacteria. This metabolic degradation requires three enzymes. The removal of any one of these enzymes will kill the bacteria, as it no longer has any carbon source. This is thus an irreducibly complex process. However PCP is a man-made chemical that is not known to exist naturally and, get this, PCP was first introduced into the environment only in 1936. Thus the bacteria must have evolved this irreducibly complex metabolic pathway less than 65 years ago! Shelley D. Copley [35] had suggested that this pathway evolved through the co-option of enzymes already used in other pre-existing pathways.
Originally posted by Zipdot
I liked the idea of "irreducible complexity" the first time around, when it was predicted by evolution supporter Hermann J. Muller in 1939 and called "interlocking complexity." (Source)
Deep inside Matt's ATP synthase harangue exists an interesting point or two. It is true that there is little written about the evolutionary processes of metabolic pathways. We're currently exploring the possible step by step evolution of complex biochemical pathways. It's a work in progress. However, we're not ready to throw our hands up and say "Ya got me. It must be DESIGNED that way. Yeah," and then wipe our sweatty brows.
Speaking of which, I'm sure that the ID crowd is familiar with the recent discovery about the man-made chemical PCP (pentachlorophenol).
Sure, it's difficult to explain a step-by-step evolution of ATP synthase at the moment. We are not so callously vain that we presume to have all the answers, but, as I said, neither are we immediately given to throwing our hands up and going on vacation. It may appear that evolutionary theory "breaks down" in microbiological examination, but I believe that what we're really seeing is a simple lag period between discovery and explanation.
Originally posted by Zipdot
Speaking of which, I'm sure that the ID crowd is familiar with the recent discovery about the man-made chemical PCP (pentachlorophenol).
Furthermore recently [j] a novel metabolic pathway, that degrades the toxic chemical pentachlorophenol (PCP), has been discovered in a bacteria called Sphingomonas chlorophenolica. This pathway provides the only source of carbon for the bacteria. This metabolic degradation requires three enzymes. The removal of any one of these enzymes will kill the bacteria, as it no longer has any carbon source. This is thus an irreducibly complex process. However PCP is a man-made chemical that is not known to exist naturally and, get this, PCP was first introduced into the environment only in 1936. Thus the bacteria must have evolved this irreducibly complex metabolic pathway less than 65 years ago! Shelley D. Copley [35] had suggested that this pathway evolved through the co-option of enzymes already used in other pre-existing pathways.
It may appear that evolutionary theory "breaks down" in microbiological examination, but I believe that what we're really seeing is a simple lag period between discovery and explanation.
Deep inside Matt's ATP synthase harangue exists an interesting point or two.
Originally posted by mattison0922
Another rebuttal attempted from a practically completely ignorant position with respect to the topic at hand.
Originally posted by Zipdot
Originally posted by mattison0922
Another rebuttal attempted from a practically completely ignorant position with respect to the topic at hand.
This is extremely uncalled for. I just lost a lot of respect for you. We're just talking here. This is not the debate forum. I offhanded you a few things to consider, I did not "rebut" your "arguement."
Zip
Originally posted by Zipdot
Thanks, Matt. I quite enjoy your discourses and I'm really glad that we are all coming together here. I think we've all been given to swelling passionately and fervously about this incessantly fascinating subject at one time or another, so nothing more needs to be said about that.
As an FSME, I am attempting a campaign for cohesiveness, which I think has largely been achieved. More and more, in our forum, we are seeing concessions and willingness to accept alternative ideas.
I want you to know that when I used the word "harangue," I meant in in its secondary, non-condescending definition,
which merely speaks to the heartfelt intensity that characterized for your love of ATP.
You have voted mattison0922 for the Way Above Top Secret award. You have two more votes this month.
Originally posted by saint4God
You have voted mattison0922 for the Way Above Top Secret award. You have two more votes this month.
*waves to Mattison and Zipdot* Rock on guys. I'm reading but know better to engage in a highly technical discussion with people who clearly know more than I do. I've not had any exposure to ID, and feel the university somewhat 'cheated' me by knowing about it and not teaching it.
Originally posted by mattison0922
Saint! I've been wondering about you... I owe you something... promise I'll get it to you.
Originally posted by mattison0922
Thanks for your vote of confidence despite my despicable behavior... of which I've eliminated most of the evidence. You might not have been so quick to cast that vote had I not.
Originally posted by mattison0922
You bring up a relevant point, and something that I feel is worth mentioning. Don't blame your university for not teaching IDT. You might not believe I am going to say this, but universities currently don't really have much to teach in terms of IDT. IDT is a relatively new origins hypothesis. As you are aware I'm sure, the theory is hotly debated and emotions tend to be strong on one side of the arguement or the other. As a result, not many professors, researchers, etc. have embraced the theory. While IDT serves as a totally legitimate basis for hypothesis formation, we've yet to see much activity in this department, ie: IDT is currently not producing much in terms of hard data.
Originally posted by mattison0922
But the success or failure of the theory should rest solely on the merit of the theory, not on political motivations.
Originally posted by soficrow
Okay - this isn't really on topic, and I just scanned only the first post.
BUT - the examples in the first post all fit with what might be described as "fractal design."