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Old 12-07-2002, 12:50 PM   #31
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Originally posted by Morpho:
<strong>No, but there's a Central American bird lurking (Pharomacrus mocinno), just like there's a Central American butterfly (Morpho peleides) lurking here. Someone who's really paranoid might think there was a connection... </strong>
Ah, nuff said mate. It was the cheesy grin that gave it away in the end, anyway

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Old 12-07-2002, 12:53 PM   #32
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DNAunion: But that is not the kind of detailed, in-depth, step-by-step, molecular-level, concrete explanation Behe asks for (he wants the level of explanation we have for the biochemistry of vision).
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pz: But Behe's argument is only in "conceptual form"! You are advocating a double-standard:
DNAunion: No I'm not. I am not advocating that ID is true: where have you been?!?!?!

And so that we can get back on track from your distraction, let me point out that I was specifically addressing how Miller misrepresented Behe. You are going off onto a tangent, trying to bring things irrelevant to the current discussion in. A bit of the old "muddy the waters" tactic.

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pz: IDists get to mumble vaguely about things they understand poorly
DNAunion: Unsubstantiated character assassination!

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pz: ... and that counts as a refutation of evolution
DNAunion: Misrepresentation! Behe calls it a CHALLENGE, not a refutation.

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pz: evolutionists have to respond with "detailed, in-depth, step-by-step, molecular-level, concrete explanations", ...
DNAunion: Why not? Evolutionists are the ones that are allowed to say that their position is undeniable scientific truth, so they are the ones who need to be able to completely demonstrate that such is the case. No?

Once again, we should all avoid following into your little "muddy the waters" campaign and stick to whether or not Ken Miller misrepresented Behe's statements (actually, there is not debate - he did....case closed).
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Old 12-07-2002, 12:53 PM   #33
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It is only because of your lowlife characteristics and/or your overwhelming need to follow party-line politics that you refuse to accept this as being the right thing to do.
It is only because of DNAunion's and other IDiot's lowlife characteristics and/or his overwhelming need to follow party-line politics that I continue to attack Behe and his ID positions.
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Old 12-07-2002, 12:55 PM   #34
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DNAUnion: No I'm not. I am not advocating that ID is true: where have you been?!?!?!
Then you can't be advocating that Behe's position is true. Where have you been????

[Edited to remove personal information. -Pomp]

[ December 08, 2002: Message edited by: Pomp ]</p>
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Old 12-07-2002, 12:56 PM   #35
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scigirl: Once again, a "he said he said" argument with DNAunion. With a name like that, I would think he'd want to talk about actual genetics like chromosome fusions, or something!
DNAunion: Excellent evidence for accepting that humans and chimps shared a common ancestor.

But what does that have to do with the fact that Ken Miller misrepresented Behe?
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Old 12-07-2002, 12:57 PM   #36
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DNAUnion: Evolutionists are the ones that are allowed to say that their position is undeniable scientific truth, so they are the ones who need to be able to completely demonstrate that such is the case. No?
LOL. BZZZT. WRONG. I love it when IDiots put 'scientific' and 'truth' together in the same sentence.

[Edited to remove personal information. -Pomp]

[ December 08, 2002: Message edited by: Pomp ]</p>
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Old 12-07-2002, 01:58 PM   #37
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Nic: 1) Behe's ruling out of the Krebs cycle as an IC system was clearly a post-hoc defensive manuvere.
DNAunion: That’s only your personal opinion. After replying to something else you state, I’ll show a reason or two to doubt it.

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Nic: When he thinks the argument goes in hs favor, he is perfectly happy to call a metabolic pathway IC, as is shown by his defense of the lactose metabolism pathway (lac operon) as IC against Miller.
DNAunion: IIRC, in that exchange, Behe was not using his 1996 definition of an IC system, but a newer formulation of IC that looks at what exact evolutionary path could have led from a starting system to a final system, and if it required multiple mutations to have occurred simultaneously.

That would be different concepts of IC, kind of like there are for evolution: one can use the term evolution to mean changes in allelic frequencies in populations in one discussion, then to mean the historical changes in biological forms revealed by the fossil record over eons of time in another discussion.

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Nic: (and besides, at least two of the steps of the Krebs cycle are performed by multi-enzyme conglomerates, which is well-matched and interacting as well as having multiple parts required)
DNAunion: Might be…might not be.

Are you using the terms loosely, as you see fit (like LucasPA uses the terms reproduction, growth, metabolism, and response to external stimuli when he asserts that it is an undeniable scientific fact that proteinoid microspheres are actually alive)? Or are you using them according to their actual intended meanings. To show that something is actually IC is more involved than just running down a list of terms/criteria that you interpret as you see fit.

And I believe we’ve already seen you make claims (or implications) that certain things are IC according to Behe’s usage when in actuality they are not. In fact, let’s see how you continue.

Quote:
Nic: ...as I've argued before, the only key criterion for IC is multiple-parts-required.
DNAunion: So like so many others, you refuse to use Behe’s definition of IC and insist instead on creating your own. Then, when you use your definition of IC – not Behe’s – to show that something is IC, you claim to be speaking for Behe. That’s nonsensical. All you could show by following that method is that you could refute your own definition of IC.

Quote:
Nic: The reason Behe called *certain* metabolic pathways, such as AMP biosynthesis, non-IC in DBB was that they could at least theoretically be performed by a one-part system, to wit an enzyme could convert an environmentally-supplied AMP precursor to AMP.
DNAunion: So what about DNA replication? Behe’s states that it is not IC, yet it is a real, complex biochemical system that requires multiple parts to function, and which cannot be performed by just a single part.

And if you try to sidestep the above by claiming that a single enzyme could produce DNA from an environmentally supplied precursor, then I could just say that a single enzyme could produce citrate from an environmentally supplied precursor, which would also counter your statement.

Finally, here are a few things to keep in mind about the biosynthesis of AMP and the TCA.

(1) Number of steps
a. AMP biosynthesis: 13
b. TCA: 8

(2) Number of enzymes involved
a. AMP biosynthesis: 12
b. TCA: 8

(3) Intermediates useful elsewhere
a. AMP biosynthesis: no (intermediates 3 through 11 play no independent roles in cells)
b. TCA: yes (TCA is an amphibolic pathway in that, although normally considered catabolic, many of its intermediates are used by cells for anabolic processes, such as the synthesis of amino acids.

(4) Portions of pathway functional
a. AMP biosynthesis: No
b. TCA: yes (“TCA” does not have to be complete or cyclic to be useful)

So the biosynthesis of AMP has more steps and requires more enzymes than the TCA, and the intermediates of the AMP process are not useful to the cell, while those of the TCA are, and portions of the TCA cycle can exist on their own because the intermediates are useful even for organisms that are anaerobic. This all points to AMP biosynthesis being more complex and less amenable to a gradual step-by-step evolutionary origin than the TCA, yet Behe explicitly states that even AMP biosynthesis is NOT irreducibly complex.

Now I can predict where these exchanges are is leading: a semantic battle, which seems to be abhorred here (unless of course, it is Principia who is relying on the finest details of something to argue against me, then, for some reason, it’s fine). So we have two choices Nic. We can either continue along these lines and get deeper and deeper into a semantic battle over the finest details of certain terms used by Behe, or we can simply agree to disagree and leave it up on the air.

But whichever we choose, we still have the undeniable fact that Behe explicitly stated years ago that the TCA is not IC, yet Ken Miller somehow feels justified in using the TCA as a counterexample to Behe’s claims.
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Old 12-07-2002, 02:14 PM   #38
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Nic: 2) DNAunion, How many "parts" does the bacterial flagellum have? Give us the One True Answer, please. Sometimes Behe looks like it's only three, sometimes it's 30-50.

(Ditto on the eukaryotic cilium, is it 3 parts or 200?)
DNAunion: For the cilium, it’s 3. If the anti-Behe-ists out there would bother reading the book, they’d know that. In fact, the following contains the quoted material Ken Miller used, so again, he has no legitimate excuse for screwing it all up.

Quote:
”Now, let us sit back, review the workings of the cilium, and consider what they imply. What components are needed for a cilium to work? Ciliary motion certainly required microtubules; otherwise, there would be no strands to slide. Additionally it requires a motor [i.e., dynein], or else the microtubules of the cilium would lie stiff and motionless. Furthermore, it requires [nexin] linkers to tug on neighboring strands, converting the sliding motion into a bending motion, and preventing the structure from falling apart. All of these are required to perform one function: ciliary motion. Just as a mousetrap does not work unless all of its constituent parts are present, ciliary motion simply does not exist in the absence of microtubules, connectors, and motors. …

… All systems that move by paddling – ranging from my daughter’s toy fish to the propeller of a ship – fail if any one of the components is absent. The cilium is a member of this class of swimming systems. The microtubules are paddles, whose surface contacts the water and pushes against it. The dynein arms are the motors, supplying the force to move the system. The nexin arms are the connectors, transmitting the force of the motor from one microtubule to its neighbor.

The complexity of the cilium and other swimming systems is inherent in the task itself.” (Michael Behe, Darwin’s Black Box: The Biochemical Challenge to Evolution, Free Press, 1996, p64-65)
DNAunion: And when Miller “refutes” Behe with his eel-sperm flagellum, does it still have microtubules? Yep. Does it have dynein? Sure does. Does it have nexin linkers? Absolutely. Yep, it had all three. Hardly any refutation of Behe (more like a confirmation!).

[ December 07, 2002: Message edited by: DNAunion ]</p>
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Old 12-07-2002, 02:32 PM   #39
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Nic: 3) Please point out where Behe outlines the concept of "IC core" in DBB (he may actually do this somewhere, so this is a "non-hostile" question if you will).
DNAunion: I'm not going to look through the whole book to find that! But here is what I found by looking in a few places I though of.

First, keep in mind that the term "IC core" is not used by Behe in his book. That is a term that, as far as I know, IDists came up with to explain what Behe meant when he said certain things. So I cannot present a quote from DBB that explicitly states "IC core". But I can show some examples of the IDEA of an IC core.

For this first quote, keep in mind my last post about Behe's statements about the 3 parts required for ciliary action - and the cilium being a member of the class of swimming mechanisms - when reading this.

Quote:
"Mechanical examples of swimming systems are easy to find. My youngest daughter has a toy wind-up fish that wiggles its tail, propelling itself somewhat awkwardly through the bathtub. The tail of the toy fish is the paddle surface, the wound spring is the energy source, and a connecting rod transmits the energy. If one of the components - the paddle, motor, or connector - is missing, then the fish goes nowhere. ...

Keep in mind that we are discussing only the parts common to all swimming systems - even the most primitive. Additional complexity is frequently seen. ... Unliked the eye of a swimmer, such extra gears are indeed part of the system - removing them causes the whole setup to grind to a halt. When a real-life system has more than the theoretically minimum number of parts, then you have to check each of the other parts to see if they're required for the system to work." (Michael Behe, DBB, Free Press, 1996, p57).
DNAunion: I'm getting tired of typing so much, so this next quote might be choppy. But I will provide page numbers so people can read the whole thing, if they want.

Quote:
"The problems start when Paley digresses from systems of necessarily interacting components to talk about arrangements that simply fit his idea of the way things ought to be. The first hint of trouble comes in Paley's opening paragraph, when he mentions that the watch's wheels are made of brass to prevent rust. The problem is that the exact material, brass, is not required for the watch to function. It might help, but a watch can function with wheels made of almost any hard material - probably even wood or bone. Things only get worse when Paley mentions the glass cover of the watch. Not only is the exact material not required, but the whole component is dispensable: a cover is not necessary for the function of the watch. A watch cover is simply a convenience that has been attached to an irreducibly complex system, not a part of the system itself." (Michael Behe, DBB, Free Press, 1996, p216).
DNAunion: That should be enough to demonstrate that Behe does hold that you can have an IC core to a system with additional parts added on. The accessory parts are not part of the IC system itself, and can be removed without loss of function.

[ December 07, 2002: Message edited by: DNAunion ]</p>
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Old 12-07-2002, 02:42 PM   #40
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Nic: 4) Certainly Behe's argument is just as wrong if his requested peer-reviewed literature is produced before or after 1996.
DNAunion: I don’t think so. People argued this years ago at ARN and were never able to demonstrate that. I think this is another “urban legend” about Behe’s book.

Some people did simple searches for articles that contained the words “flagellum” and “evolution” and when they got dozens or hundreds of hits, claimed Behe was wrong. But that is NOT enough to demonstrate Behe’s statements wrong. Behe himself mentions in his 1996 book that there were articles that deal with the evolution of cilia (or is it flagella, or something else), but points out that they are conceptual in nature (“word pictures&#8221 , not in-depth, step-by-step, molecular-level, detailed explanations of the type he was looking for.

Failing to take context into consideration leads many people astray.
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