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Author | Topic: Intelligent Design just a question for evolutionists | ||||||||||||||||||||||||||||
Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
Well, actually, the overall teleological argument goes back way before Paley. The teleological vs. non-teleological debate has been going on for thousands of years, and it's only recently that the pendulum of scholarly argument has swung in favor of non-teleology in the living world. That historical context is important.
Sure, but science is more than just deductive reasoning through syllogisms.
Well, that's a pretty terrible way to detect intelligent design -- and that syllogism is rendered pretty much nonsense by the fact that Neo-Darwinian mechanisms are able to create systems that have the appearance of design.
Your exact "syllogism" isn't inherently creationist. But it's often appropriate to consider the broader context of an argument: who is making it and why?
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
Then it's reasonable to be suspicious of agency in the origin of life, given the existence of a genetic code, right? It's working from analogy.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
No, I said it's a terrible way to detect intelligent design. Sure, you can detect design -- but we need an approach where we can determine if that design is the result of agency or Neo-Darwinian mechanisms. Arguments from analogy are powerful, but you're not making an argument from analogy here.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
That's actually exactly what we see in life. They're called "protein domains," and they function as modular parts that give architecture to a diverse array of molecular machines and systems (which, in turn, give form and function to cells). I see this argument a lot from those with a non-teleological perspective: that life, actually, doesn't look like the product of engineering. But the examples usually cited are not molecular -- they are typically tissue-level or anatomical. When we go into the realm of molecular biology, the appearance of engineering only strengthens. In short, the more we know about molecular biology, the more the analogy between engineering and the molecular fabric of life deepens. And that's suspicious. Why does life's molecular fabric look like the product of engineering? Typical arguments about "irrational design" -- like the eye's backward wiring -- simply break down when one considers the structural designs of life's core, phylogenetically basal molecular machinery (e.g., bacterial flagella, F-ATPases, etc.). And before this is hand-waved away as an improper argument from analogy, remember that analogous reasoning is at the heart of the origin of many robust scientific hypotheses. That's kinda why Margulis' endoysmbiotic hypothesis emerged triumphant and was "almost unchallengeable" by 1974, the protestations of evolutionary biologists Uzzell and Spolsky notwithstanding. Her argument as to the origin of mitochondria was largely based on Wallin's observations concerning the similarities between the cytological properties of mitochondria and bacteria. Edited by Genomicus, : No reason given.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
My English skills are not sufficient enough to decipher what you're saying here, so I'll opt to disengage in this particular line of discussion with you.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
Not sure if you're referring strictly to DNA as a molecule here, in and of itself, or the whole genetic code. Because when it comes to the genetic code, there's plenty that's similar to it -- phenomena which we know are the products of agency. The canonical genetic code is a code in a very real sense -- this isn't metaphorical language employed by biologists. And codes and data transmission -- complete with error-correcting mechanisms, parity structure, etc. -- are known to be the products of intelligence. Keep in mind, too, that the presence of a genetic code was not anticipated by the non-teleological perspective of biotic reality. Rather, that perspective had to accommodate the existence of a canonical genetic code: "Imagine that in 1957 a clairvoyant biologist offered as a hypothesis the exact genetic code and mechanism of protein synthesis understood today. How would the proposal have been received? My guess is that Nature would have rejected the paper. 'This notion of the ribosome ratcheting along the messenger RNA three bases at a time—it sounds like a computer reading a data tape. Biological systems don’t work that way. In biochemistry we have templates,where all the reactants come together simultaneously, not assembly lines where machines are built step by step.'" From: Hayes, B. The Invention of the Genetic Code. American Scientist. And since there's a lack of historical evidence for the molecular evolution of the genetic code, it's perfectly reasonable to argue that there are tangible clues that parts of the biotic world are the products of engineering.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
I get your point, but IMHO it's a bit of stretch to equate perceived phantasmagoria in the clouds with what we see in biology. When we say that cells have molecular machines, we actually mean that they have machines. This isn't metaphorical language -- and the same is true for genetic codes. But let me add a bit more nuance to this. To take your example of dragon-like clouds: what happens when we hone in on those images in the clouds in more depth? The images start looking less like dragons and more like ordinary masses of atmospheric gases. In other words, under higher resolution, the appearances fall away. But this isn't so for life. When we look at life under increasingly higher resolutions, the deeper the engineering analogy becomes. There are actual machines with discrete, modular parts. At a core, basal level, there are systems that smack of rational design -- systems and machines that are not reflective of hodge-podge, jury-rigged Neo-Darwinian co-option mechanisms. This doesn't mean we immediately say that life is intelligently designed. It certainly does not mean that we introduce such material in high school classrooms. But it does mean that it makes sense to be suspicious that teleology has played a role in the origin of life. We can then take that as a working hypothesis, further refine it, and see where the hypothesis' predictions and explanatory powers takes us.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
That is correct, yes. However, I was responding to Percy's line of argument:
I daresay most molecular and computational biologists would disagree with this assessment that DNA (if we mean a genetic code, and not just the molecule itself) doesn't strongly resemble anything we know to be designed by intelligence. And, of course, any explanation -- teleological or non-teleological -- for the origin of the genetic code must ultimately rest in historical evidence. After all, we know that we're very good at conjuring evolutionary pathways that never existed in reality: John McDonald's narrative for how the apparently irreducibly complex mousetrap could have "evolved" from simpler precursor stages demonstrates this rather succinctly. Edited by Genomicus, : No reason given.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
Sure, but those metaphors won't take you very far in terms of making sense of these phenomena. Meteorology does not borrow the terminology of engineering. Molecular biology does -- and does so extensively. Why?
My statement was regarding whether your hypothetical cloud-dragon would still look like a dragon under higher resolution, not whether those clouds were intelligently designed. Of course, concluding that all clouds are made by intelligence because humans produce some atmospheric gases is to commit a major slip in logic.
Again, calling oxygen and hydrogen "water machines" doesn't actually help us make sense of chemistry. Sure, you can call them "water machines" as an odd literary device, but that's about all. Why don't chemists talk about an oxygen-hydrogen circuit that shuttles oxygen to hydrogen? And why do molecular biologists use such -- ostensibly engineering-based -- language when describing protein interactions and pathways in cells? It is only biology, it seems, that requires engineering language in order to shed more light on various biological systems and phenomena. This language, again, is not metaphorical as it pertains to biology. It is literal. And it has proven tremendously useful to the field. Why? Edited by Genomicus, : No reason given.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
A hypothesis of agency in the origin of life need not conflict with the modern evolutionary synthesis.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
I don't see why it would have any obligation to that end, inasmuch as the Neo-Darwinian theory of common ancestry need not explain how life first arose on Earth.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
Most molecular biologists -- I suspect, based on what's been published in the scientific literature -- would comfortably assert that the genetic code resembles human-designed codes and data transmission systems. I could provide a litany of relevant quotes from the literature, if you like.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
Yes. To the degree that the Neo-Darwinian synthesis wields explanatory power? Absolutely not -- not even close. But a case can be made that a teleological approach to biological origins can yield valuable insights. For example, the hypothesis of eukaryotic front-loading explains why core eukaryotic proteins have well-conserved structural and sequence protein homologs in prokaryotes, as opposed to some of these essential proteins having been cobbled together from non-functional stretches of prokaryotic genomes (e.g., pseudogenes). Further, specific design hypotheses provide predictions which can then be experimentally tested.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
Eh, not really the point of that quote. The point of that quote is not to explore the nature of scientific publication practices. The point is to highlight how a genetic code was not an expected reality of the non-teleological framework.
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Genomicus Member (Idle past 1262 days) Posts: 852 Joined: |
Yes, but that we do not know how life arose on Earth has absolutely no bearing on the validity of the Neo-Darwinian synthesis and theory of common ancestry.
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