Uncommon Descent Serving The Intelligent Design Community

UD Commenters Win One for the Gipper

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Below the fold I have reproduced an interesting comment thread in which ribczynski attacks ID proponents’ criticisms of macroevolution through NDE, and two ID proponents convincingly refute the Darwinist line.

 

DARWINIST’S ATTACK

 

ribczynski writes:

 

The following comments and questions are for those of you who acknowledge that natural selection and common descent are real (with the usual caveats about horizontal gene transfer), but believe that natural selection does not and cannot explain large-scale evolutionary changes (i.e. “macroevolution”).

 

[Note: In this discussion I will be using “natural selection” to encompass both heritable variation and selection, as is commonly done.]

 

1. When ID supporters ask for evidence of macroevolution, biologists point to the fossil record, molecular biology and comparative anatomy to make their case.  The more enlightened IDers accept these as evidence of evolution, but question whether such evolution can be explained as the result of unguided natural selection.  They ask for evidence that unguided macroevolution has been directly observed.

 

The problem is that macroevolution doesn’t happen on a short human timescale. Why demand a demonstration of rapid macroevolution when evolutionary biologists don’t even believe that it occurs? It doesn’t make sense.

 

Some, like jerry, will argue that Darwinians are just using time as an excuse:

 

Since there are no examples of macro evolution happening, Darwinists resort to all sorts of crutches, the most important of which is deep time.  They will say that don’t you see what can happen over millions of years and that is where they stop.

 

The question for jerry is this:  Is he prepared to provide a real-time demonstration of guided macroevolution? If not, why the double standard?

 

2. If a direct demonstration of macroevolution is not possible, then what about the indirect evidence of the fossil record, comparative anatomy and molecular biology?

 

No good, say ID supporters, because you can’t show that the evidence was produced by unguided changes.  They might have been guided.

 

I have three responses:

 

a. In making this complaint, IDers are undermining their own demand for a direct demonstration of unguided macroevolution.  Suppose that such a demonstration could be arranged.  How would we know that it was unguided?  After all, it’s possible that the Designer has his fingers in our demonstrations.  (This, by the way, is what critics mean when they say that ID is unfalsifiable).

 

b. If evolution is guided, why are there no saltations?  Why does the designer always happen to choose the small changes that we would expect to see if natural selection were operating — the same small changes that allow us to deduce the nested hierarchy?

 

c. Apart from their YEC brethren, IDers tend to accept the evidence for geologic processes operating over vast timescales, and they don’t dispute it when geologists contend that these processes were unguided.  Why don’t they demand proof that these processes were unguided?  Could it have anything to do with the fact that their religious beliefs conflict with unguided macroevolution, but not with unguided geology?

 

3. Mathematical or computer modeling of Darwinian processes could demonstrate the plausibility of unguided macroevolution, but as the reaction to Avida indicates, IDers can always insist that a particular model is unrealistic in some crucial way that invalidates the results.

 

IDers demand empirical evidence of unguided macroevolution, but it’s not clear to me what sort of evidence they would actually accept, short of an authentic handwritten note from God.

 

I ask them: In your view, what would count as sufficient empirical evidence for unguided macroevolution?

 

 

ID PROPONENTS’ REBUTTAL:

 

gpuccio writes:

 

ribczynski:

 

When you make specific points, I am always ready to answer.

 

1) is not really a point.  I agree that the supposed unguided macroevoution operates at large time scales:  nobody is asking that it should be “directly” observed.  But we do ask that it may be “indirectly” inferred form observed facts according to a credible model, which is what we can and must ask of all scientific theories.

 

2)

 

a) Wrong. If you can arrange a demonstration, be it direct or indirect, where macroevolution happens in an understandable way, according to a credible model, without any apparent intervention of a designer, that would be falsification of ID.  The objection you suggest, that a designer could still be acting “behind the scenes” is imply unacceptable.  I would never make it, and the same is true for any serious IDist.  Maybe some theistic evolutionists…

 

b) First of all there are saltations. Have you ever heard of “punctuated equilibrium”? That’s not an ID theory.

 

Anyway, I don’t see why a designer should not act gradually.  That’s the usual way of working of designers. Obviously the time scale depends on the nature of the designer.

 

And by the way, we do not observe “the small changes that we would expect to see if natural selection were operating.”  If that were the case, we should see an almost infinite number of “small changes,” not only at the fossil level, but also at the molecular level.  And a credible and detailed model for macroevolution could be inferred.  And that has never happened.  Rather, what we do observe are “the small changes that we would expect to see if intelligent variation and selection were operating.”  I refer you again to the example of intelligent protein engineering.

 

c) About geological processes: personally, I am not completely sure that they are absolutely unguided:  I just don’t know.  The fact is that, as far as we know, geological processes, and other similar processes (evolution of the universe, and so on) do not explicitly exhibit CSI (the fine tuning argument is about the whole universe, and not specific internal processes of it).  So, the ID theory is not at present applicable to them.  They can apparently be explained by laws of necessity, usually with only a few random components.  The model is credible, and we can well accept it.  Religious beliefs have nothing to do with that.

 

3) Existing computer models have in no way demonstrated either the “plausibility of unguided macroevolution” or the emergence of any CSI from unguided processes.  Avida and similar are intellectual frauds.  In case you have not noticed, all the recent work by Dembski and Marks is dedicated to that problem.

 

But it is possible, in principle, to give a demonstration that would falsify ID (and that again shows that ID is falsifiable).  We are eagerly waiting to be falsified!  But Avida?  Please, be serious.

 

Show me a computer model where unplanned and unexpected CSI emerges from random noise on the basis of “spontaneous” self-selection, without the system having been planned in any way to select anything specifically, and we can discuss. After all, that’s what the Darwinist affirm has happened.

 

Jerry then writes:

 

[quoting Rib] “The question for jerry is this: Is he prepared to provide a real-time demonstration of guided macroevolution? If not, why the double standard?”

 

What a silly question.  You are saying that we do not have a video tape of the designer in his/her lab preparing the new species that we have a double standard?  ribczynski, you need to get a reality check.  ID says that the formation of new species with novel complex functions is a mystery.  We are not saying that there is proof that there is a designer but only that it is a very likely explanation for what happened.  Come on; the double standard comment means you are really flailing.

 

Is such a thing as a designer possible.  Certainly, no one doubts that within 50-100 years, engineering genomes to do completely novel things may be possible in labs such as those that exist at MIT.  That my friend will be an example of intelligent design in action.  If such a thing is possible in today’s world what is to say it was not possible in the past.

 

[quoting Rib] “If evolution is guided, why are there no saltations? Why does the designer always happen to choose the small changes that we would expect to see if natural selection were operating — the same small changes that allow us to deduce the nested hierarchy?”

 

Gould said the whole history of the fossil record was one of apparent saltations. That was why he developed his absurd fix for Darwinian processes called punctuated equilibrium.  I suggest you read Gould and as suggested by other, his ideas on punctuated equilibrium.  Everybody immediately just lapped up his ideas and it is now part of the evolutionary canon.

 

[quoting Rib] “If a direct demonstration of macroevolution is not possible, then what about the indirect evidence of the fossil record, comparative anatomy and molecular biology?”

 

The indirect evidence refutes a gradualistic approach which is why Gould proposed his theory.  Comparative anatomy and molecular biology could have been the result of micro evolution once a population gene pool arose.  ID believes and supports micro evolution.  See my comment #88.  The question is where did the original gene pool come from.

 

[quoting Rib] “Apart from their YEC brethren, IDers tend to accept the evidence for geologic processes operating over vast timescales, and they don’t dispute it when geologists contend that these processes were unguided. Why don’t they demand proof that these processes were unguided? Could it have anything to do with the fact that their religious beliefs conflict with unguided macroevolution, but not with unguided geology?”

 

You should study geology. There is evidence of both gradual and catastrophic forces having occurred in the past and operating today in the world.  We can witness massive earth quakes, volcanos, tsunamis and rock slides, sedimentation and erosion before our eyes as well as plate tectonic movements, plate formation at the mid ocean ridges.  All the pieces fit together and I am sure there will be adjustments in it over time.  So all holds together but one thing geology has never done is form any complex specified information.

 

Now biology has nothing similar except for micro biology which we all accept and yet life has complex specified information forming over time and no known process that can do it.  Nothing in the current world shows this tendency to form complex specified information.  Geology produces complexity but it is not specified.  That is why we can accept geology and not biology.  One process leaves a host of forensic evidence on how the non specified complexity has formed, the other leaves no information on how the complex specified information has formed.  In fact the geological evidence is extremely persuasive for ID.  There are gradual processes working over time that can be observed in the current world for geology but none in biology except for micro evolution which does not produce complex specified information.  There is no forensic evidence that micro evolution leads anywhere but to devolution which is the opposite of macro evolution.

 

[quoting Rib] “I ask them: In your view, what would count as sufficient empirical evidence for unguided macroevolution?”

 

How about some examples either in the fossil record or in the current world.  None exist.  Macro evolution has no empirical evidence behind it.  It is not science, but an ideology.  Why don’t you start presenting empirical evidence for macro evolution.  If you could, you would be a Nobel prize winner.

 

Please, provide some evidence, not just the tired old clichés we see all the time.

 

Comments
Roy, "Here’s what I’m saying: in the history of science, even screwed-up, only halfway decent naturalistic explanations are not replaced with non-naturalistic explanations." In the history of Science, nothing that I know of that has been originally held as a non-materialist explanation has been subsequently explained by a materialist one, save for the one in question. "Think about it: Planetary motion. Geologic processes. Human reproduction. I could go on. Does it ever happen? Or would ID, should it succeed, be the first?" Please do go on, because all of these examples were understood to be natural processes even in the time of Aristotle.Lord Timothy
December 8, 2008
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Joseph and Rib,
Avida showed how so-called “irreducible complexity” could be produced by a Darwinian process. That is a lie. The Avida program is just thjat- a program written by humans.
I just have to comment on this because both you and rib are wrong in your assertions. Both the computer simulation AVIDA and biological evolution are instances of Darwinian processes. The only ingredients required for a Darwinian process are replication, heritable variation, and fitness selection. In both, organisms are able to reproduce and pass their characteristics to their offspring. In both, random mutations arise which affect the organisms’ ability to survive and produce offspring. In both, selection pressures favor some varieties and penalize others. You must be certain your understanding of the definition of "irreducible complexity" is not faulty. While it's true that AVIDA does not mimic real-life biology (and the authors do not deny that), it does show that an IC system can evolve via indirect stepwise pathways in tightly constrained environments under certain conditions of replication, variation, and (artificial) selection. This is important, as some ID supporters seem to regard "irreducibly complex" as tantamount to "unevolvable in principle". This is not a problem since IC primarily deals with DIRECT Darwinian Pathways and always has. Behe has always stated that INDIRECT Darwinian pathways are another matter. We must also consider the level of complexity: the number of components involved. Behe has long noted that IC structures with a small number of components (2-4) may form depending on the conditions. But what about IC structures that are composed of tens or hundreds of interlocking components? That is the real problem ignored by Darwinists. They cannot even conceive of potential pathways...and it's not like the flagellum is all that complex. It's actually fairly simple in comparison to many other systems. When it comes to AVIDA, in the “The Evolutionary Origin of Complex Features,” published in Nature in 2003 by Lenski, the selective forces that have 100% probability affixed are those for various simple binary arithmetic functions, which are ultimately used to build the “equals” (EQU) function, and for the EQU function itself. What’s more, the more complex the function, the greater the reward given to the digital organisms for it. There is no analogy for such selective forces in nature. Nature doesn’t care whether something is more or less functionally complex; it only cares whether it can survive in a particular environment. And what happens when no step-by-step rewards are given for functional complexity? An article on AVIDA in Discover magazine (Feb. 2005) stated, “When the researchers took away rewards for simpler operations, the organisms never evolved an equals program.” By building rewards into the system — i.e. incorporating active information by providing a highly constrained fitness function — the programmers gave the system a purpose. Hence its creative power: dynamics.org/Altenberg/FILES/LeeEEGP.pdf “Both the regression and the search bias terms require the transmission function to have ‘knowledge’ about the fitness function. Under random search, the expected value of both these terms would be zero. Some knowledge of the fitness function must be incorporated in the transmission function for the expected value of these terms to be positive. It is this knowledge — whether incorporated explicitly or implicitly — that is the source of power in genetic algorithms.” The key point is that simulations like AVIDA are set up precisely so they can produce results...NOT necessarily that they strictly follow nature as a guideline. The question is what can Darwinian mechanisms do under the much broader constraints of nature without intelligence (active information) being involved. Now I'm back to lurking since I have work to do.Patrick
December 8, 2008
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Jerry, "I have Valentine on video saying Darwinian processes cannot explain it and I believe he used the term top down." I don't doubt he did since he says the same thing in the first sentence of the paper I linked. It is important to keep both his comments and the Cambrian explosion in their proper context, though. Further in the paper he points out that in fact most diversity appeared in the long Precambrian buildup and that very few truly novel forms actually appear in the "explosion." Are you familiar with the Ediacara fauna that appear 55 million years before the Cambrian? Or the "little shellies" that dominated the first 25 million years of the Cambrian? "The debate is not using definitions and then filling up boxes with examples of that definition when the particular examples may not represent anything being debated." THe basic rules of debate require an agreed-upon definition of terms. so the debate will be about definitions until one is agreed upon. I see no reason why we can't use Futuyma's definition, and I have given some examples that I think we can both agree represent macroevolution: 1) endosymbiotic origin of mitochondria 2) evolution of bacteriocytes in aphids 3) evolution of ear bones from jaw bones during synapsid-mammal transition 4) evolution of whales from land verts 5) Evolution of horns in Titanotheres (see figure 21.10 in Futuyma) 6) Increasing brain case size in humans I will eliminate the vole example since it just deals w species-level changes. If you think that 6) is just microevolution as well, that is fine. But then you must also consider the evolution of the human brain itself to also be microevolution since it just represents an increase in volume (# synapses, neurons, etc.) with no novel functional parts added. I am most interested in what you think of 1) and 2) and I hope you will read some of the info I linked so we can discuss them.Khan
December 8, 2008
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Talk origins on macroevolution:
In evolutionary biology today, macroevolution is used to refer to any evolutionary change at or above the level of species.
This is useless because we don't have a concrete definition of species. Not only that but even YECs accept that changes can occur at or above the species level. The following makes more sense in light of the debate: scroll down to evolution:
evolution, biological n. 1) “microevolution”—the name used by many evolutionists to describe genetic variation, the empirically observed phenomenon in which exisiting potential variations within the gene pool of a population of organisms are manifested or suppressed among members of that population over a series of generations. Often simplistically (and erroneously) invoked as “proof” of “macro evolution”; 2) macroevolution—the theory/belief that biological population changes take (and have taken) place (typically via mutations and natural selection) on a large enough scale to produce entirely new structural features and organs, resulting in entirely new species, genera, families, orders, classes, and phyla within the biological world, by generating the requisite (new) genetic information. Many evolutionists have used “macro-evolution” and “Neo-Darwinism” as synonymous for the past 150 years.
Joseph
December 8, 2008
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To Kahn (again), The "evidence" for endosymbiosis can also be used to deduce that m itochondria and chloroplasts arose via devolution from eukaryotes. And if you want to use endosymbiosis as evidence for evolution you had bhetter be prepared to provide a demonstration.Joseph
December 8, 2008
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They definitely do not derive all of their designs from a common predecessor, forming a single continuous nested hierarchy that can be deduced from a careful analysis.
1- Nested Hierarchy is not to be expected from evolutionary processes for the simple fact that evolutionary processes do not have a direction. Nested Hierarchies demans a direction. For example the animal kingdom is defined by several criteria. The phylums under that kingdom obey those criteria PLUS at least one more. Then the class would include the phylum's criteria (which includes the kingdom's) PLUS at least one more. And it goes on. Whereas descent with modification does NOT follow those rules because traits can be lost as well as gained- that is acording to the theory.Joseph
December 8, 2008
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To all anti-IDists, The "evidence" for the evolution of the eye/ vision system is the same now as it was in Darwin's day: The only evidence for the evolution of the vision system is that we have observed varying degrees of complexity in living organisms, from simple light sensitive spots on unicellular organisms to the vision system of more complex metazoans, and we “know” that the first population(s) of living organisms didn’t have either. Therefore the vision system “evolved”. Isn’t evolutionary “science” great!Joseph
December 8, 2008
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Edits: is simply asserted as natural, and: You can’t reach conclusion X if X is specifically excluded.William J. Murray
December 8, 2008
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The obvious reason why science has never come up with an intelligent-design answer is because inteligent-design answers are not allowed by science. All hypothesis, theory and explanations are required to be materialistic constructs, and so the entire explanatory process must lead to non-intelligent conclusions. There are examples where intelligent design was presumed, and an intelligently-designed conclusion was reached: Newton and Principia Mathematica. Only, his result of intelligently-designed, meticulously arranged natural laws was later co-opted ... without explanation ... by materialists as "natural" (I'm not sure how natural materialism accounts for the formation of the very "laws" that creates both nature and a material universe). When all apparent, even obvious non-materialism (mind) and intelligent design (anthropic principle) is simply asserted and natural, and no intelligence is allowed into the process, how exactly does one expect science to reach a design conclusion? You can't reach conclusion X if the entire process any inclusion of X whatsoever.William J. Murray
December 8, 2008
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Avida showed how so-called “irreducible complexity” could be produced by a Darwinian process.
That is a lie. The Avida program is just thjat- a program written by humans. And the ONLY way to simulate living organisms is to understand everything about their development and sustaining mechanisms. We do not and therefore we cannot sim ulate living organisms. You keep on claiming things about the fossil record and keep ignoring the facts about it. SZo here it is again: Over 90% of the fossil record is of marine invertebrates, which is to be expected from what we know about fossilization. Yet in that vast majority we don't find any evidence for macro-evolution. Next Khan claimed the mammals ear evolved from reptiles via bone movement and shrikage. That should be easy to confirm except we don't understand the development of our ears. What I mean is we should be able to tinker with reptilian embryos to get the bone movement and shrinkage. Yet I doubt anyone is trying that. So the bottom-line is all evos have is circumstantial evidence. And circumstantial evidebnce can lead to differing conclusions depending on one's pre-suppositions. "Change te way you look at things and the things you look at will change" unknownJoseph
December 8, 2008
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The TV show bothers me both because it's not real and because it's not science. Here's what I'm saying: in the history of science, even screwed-up, only halfway decent naturalistic explanations are not replaced with non-naturalistic explanations. Think about it: Planetary motion. Geologic processes. Human reproduction. I could go on. Does it ever happen? Or would ID, should it succeed, be the first?RoyK
December 7, 2008
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RoyK, Does the TV show bother you because all the examples were made up or does it bother you that it they are true examples and not made up that they are only an isolated incidents. Are you asking for a theory or are you asking for specific instances? Or would either suit you. You really come across as looking to use the God of the Gaps argument which is only valid if you assume all phenomena in nature have a naturalistic cause. The God of the Gaps argument only works for phenomena with naturalistic causes. If the explanation is not naturalistic then invoking a God of the Gaps argument does not work. You can not continue by saying that science has never found anything but naturalistic causes when science may not be capable of finding all causes. If we continue to investigate something and continue to come up empty then we may want to ask if this is a case where science may not have the answer. Good night.jerry
December 7, 2008
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Khan, I have Valentine on video saying Darwinian processes cannot explain it and I believe he used the term top down. Valentine also uses the term Explosion since the time period is relatively small for this much disparity to appear. Especially when there was little accompanying diversity. We will have to find another definition to suit you. ID does not deny evolutionary processes, only the extent to which they can form novel complex functional capabilities. So call that what you want and we can go from there. If you want to call some small trivial changes, macro evolution, fine but that is not what the debate is about. The debate is not using definitions and then filling up boxes with examples of that definition when the particular examples may not represent anything being debated. So tell me what would you call the appearance of novel complex functionality in a species. Give it a name and we can go from there to see if your examples meet the criteria. I would be interested in just what happened in your examples and what changes happened in each species and see where they fit.jerry
December 7, 2008
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Can you come up with a real, actual example (not a TV show) in the history of science, where a developed naturalistic explanation was replaced by one attributed to agency?RoyK
December 7, 2008
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"Here’s my observation: Every time we get a full science explanation, it’s a naturalistic one." I am not sure this is true. Just watch you favorite version or least objectionable version of CSI. In several cases the story has come down to whether it was an intelligent cause or a naturalistic one. This is not a unique case since we do the same in archaeology but so far you are right for SETI. But suppose the cause is intelligence and we suppose a naturalistic one, then we by assumption will probably miss the real cause. For the naturalistic world including biology, there seems to be an endless series of dead ends when it come to producing CSI (note same abbreviation for two completely different things.). Nature has not done it in non biological areas and we have no cases where we observed it happening in biological areas so why assume that it must have done it in life forms in the past. You have no precedent for it. It seems illogical too. That's why I say it is ideologically based.jerry
December 7, 2008
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gpuccio wrote:
I agree that the supposed unguided macroevoution operates at large time scales: nobody is asking that it should be “directly” observed. But we do ask that it may be “indirectly” inferred form observed facts according to a credible model, which is what we can and must ask of all scientific theories.
The evidence (fossil, biochemical, anatomical) is there, but you presumably don't find natural selection to be a "credible model". If so, read my later comments in the 60 minutes thread. There I deal with various alleged theoretical limitations of natural selection.
If you can arrange a demonstration, be it direct or indirect, where macroevolution happens in an understandable way, according to a credible model, without any apparent intervention of a designer, that would be falsification of ID.
Not unless you stipulate that the designer will not interfere with the demonstration. But if you allow that the designer might be God, how can you know this?
First of all there are saltations. Have you ever heard of “punctuated equilibrium”?
Sure, but those aren't the kind of saltations I'm talking about. I'm talking about changes, instigated by a designer, that happen much faster than they possibly could if natural selection were responsible. Why don't we see these? Why does the designer always choose to behave in a way that happens to conform to what natural selection would do?
Anyway, I don’t see why a designer should not act gradually. That’s the usual way of working of designers.
No it isn't. Designers will make incremental changes to a design for a while, then abandon it and start fresh when further tweaking becomes unwieldy. They definitely do not derive all of their designs from a common predecessor, forming a single continuous nested hierarchy that can be deduced from a careful analysis. Your Designer is the odd man out.
About geological processes: personally, I am not completely sure that they are absolutely unguided: I just don’t know.
The geological community has no such qualms. Nor do most ID supporters. As I said, I suspect that this is because unguided geological processes pose no particular challenge to their religious beliefs.
Avida and similar are intellectual frauds.
Hardly. Avida showed how so-called "irreducible complexity" could be produced by a Darwinian process.
Show me a computer model where unplanned and unexpected CSI emerges from random noise on the basis of “spontaneous” self-selection, without the system having been planned in any way to select anything specifically, and we can discuss. After all, that’s what the Darwinist affirm has happened.
"Spontaneous self-selection"?? What are you talking about? That's not a Darwinian concept.ribczynski
December 7, 2008
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Jerry, You wrote a lot here, and I can't respond to it all. There are a lot of mistakes and omissions there. For example, OOL has moved well beyond the Miller-Urey expts. google "montmorillonite" and see what you find. it's still far from a complete picture but you should at least acknowledge that a lot of work has been done on the topic since the 1950's. Second, the Cambrian Explosion (never understood why 8 million yrs is an "explosion") was nothing like what you describe. Here is a paper by the same James Valentine showing that it was very "bottom up": http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=44279 Beyond all that, you still didn't provide your definition of macroevolution. I have no interest in working towards defining it again, as it has already been done. why don't we just use the standard def provided by Futuyma (evolution of major new characters that make organisms recognizable as new taxa above the species level)? This seems most fair, since I am still perplexed why you exclude single-celled organisms from your definition and apparently think that even changes significant enough to cause a Family level "speciation" (Family-ation?) might not count as macroevolution. I have never seen those conditions laid out in any scientific work and therefore think it would be invalid to use them in a scientific discussion. Your argument that most discussion of macroevolution concerns multi-cellular organisms does not change the definition of the term. So, to get back to my original question, by the standard definition, would you agree that the endosymbiotic origin of mitochondria (evolution of complex novel features and a Kingdom-level change) and the evolution of specialized cells to house symbiotic bacteria in aphids are (again, a complex feature and high taxonomic order change) are examples of macroevolution? Here are some sites to brief you on the details: http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/E/Endosymbiosis.html http://biology.plosjournals.org/perlserv/?request=get-document&doi=10.1371/journal.pbio.0000021&ct=1Khan
December 7, 2008
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correction: for "full science" above, read "fully scientific."RoyK
December 7, 2008
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jerry, I didn't say I agree with your assessment of the evidence, or with the tiers picture. I don't. For example, I think there's very good support for the relatedness of all life and for universal common descent. UCD goes across all the "tiers" of your model. Of course we can't observe them: but we can observe some things an extrapolate. Consider Darwin's last book, on the worm. By observing the humble earthworm in his own lifetime, he was able to explain the formation of the topsoil of England. We only observe incremental evolutionary processes. But we don't observe direction or intelligence there, so why should we presume that it must operate at the larger scale? Here's my observation: Every time we get a full science explanation, it's a naturalistic one. I'm wondering: has there been a time in the history of science (outside of ID's hope for the demise of Darwinism) when a naturalistic causal explanation has been replaced by an explanation based on intelligence? Science seems to explain by moving in the other directiion.RoyK
December 7, 2008
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RoyK, It is a gaps argument, namely a gaps in the science argument. There is a lack of evidence that micro evolutionary processes or any other naturalistic processes has ever produced even one example of the necessary functional complexity that exists in abundance in nature. You will note that I never say that there may not be some fruitful theory in the future but as of this moment, gradualism fails miserably as does every other naturalistic theory. For gradualism to be an explanation it would have leave all sorts of forensic evidence that it was operating today, or had operated in the past. We see none. So why accept a theory that has no empirical evidence to support it. ID says design is an option and one that would explain the evidence. It does not say naturalistic processes are not working, only that none have been described that would explain all the facts of evolution. The more this get investigated, the more design becomes a more viable option. As we said last week, it is a black swan issue but admit there could be a black swan but as of the present all swans are white and we have looked almost everywhere. Most of us would be quite happy with a declaration in science courses and textbooks that says that science currently does not have an explanation for the origin of many of the capabilities of species that have arisen over time and Darwin at this moment appears to be wrong on this issue. If the science community made such a declaration, I personally would be happy and would never insist that intelligence be a part of the science curriculum. You could also look at the argument as one where a certain process is observed and understood but one then took this process and extrapolated it to areas where they have no information as to its applicability. Such a process is not good science and at least a minimal success rate would be the justification for such a leap of a gap.jerry
December 7, 2008
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jerry, as I read your explanation of "tiers," ID is most interested in areas where we have the least data. Where we have more data, naturalistic explanations seem to provide satisfactory answers. Where the answers are less satisfactory -- which of course tends to be where there's less data -- ID steps in and says "design"! How is this not a "gaps" argument? (I won't use the other G word here.)RoyK
December 7, 2008
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Certainly, no one doubts that within 50-100 years, engineering genomes to do completely novel things may be possible in labs such as those that exist at MIT. That my friend will be an example of intelligent design in action. If such a thing is possible in today’s world what is to say it was not possible in the past.
Gee, this has me thinking of Men in Black, and not 2001. There's a galaxy enclosed in a spherical bauble hanging from the cat Orion's "belt" (collar). Obviously this is by design. I wonder if the galaxy has inhabitants that have hidden an even teenier galaxy in the chew-toy of a teeny dog. The notion that one entity can construct the reality of another cannot be ruled out logically. But what is the explanatory advantage of a designer regress? It seems purely anti-explanatory to me. I anticipate a response along the lines of, "Well, if it's the truth, science should be open to it." I disagree. Empirical science gains its power in obtaining certain sorts of explanations by ruling out other sorts. Want the truth? Turn to religion and/or spiritual practice. Want a utilitarian account of how things work in the material universe? Do empirical science, excluding all explanations that invoke the non-material. Empirical science does not get you to ultimate truth. Improved understanding of nature can be demonstrated operationally, perhaps, but there is certainly no arrival a point of complete understanding. It boggles my mind that IDists, when it serves their arguments, will invoke Popper and falsification, but just don't catch on to the fact that inductive inference gives only fallible explanations of empirical observations. So, again, what is the utility of changing empirical science to permit a designer regress? That is, what does it profit scientists to contemplate that our universe might be hanging from the collar of a cat, even if it is true?Sal Gal
December 7, 2008
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The following is an analysis of the changes in life forms and where ID has interests. Evolution is essentially a multi-tiered theory. The first tier is the origin of life or how did a cell and DNA, RNA and proteins arise. Quite a sticky issue with no sensible answer by science. Lots of speculation and wishful thinking but nothing that makes sense. The problem is enormous yet few admit its size. The solution is always just around the corner and things like the Miller Urey experiments are still used as illustrations of what works. Just imagine how you construct a ribosome by chance or atp synthase. A high percentage of ID concerns are in this tier and zero concerns by neo Darwinism which essentially starts with the first cell. However, a discussion in a Robert Shapiro’s article in Scientific American over a year ago was about this and it is interesting that he invoked Darwinian processes to bolster his claims. I believe Dawkins has used natural selection as a factor in OOL. Usually, evolutionary biology stays away from origin of life issues but nearly every biology book deals with it. The complexity of the origin of life issues is one studied extensively by ID proponents and their conclusion is that only an intelligence could have produced such complex systems. The next tier I will call the evolution of single celled organisms. There is really quite a lot of development of significant capabilities here, including Khan's example of eukaryotes and such things as photosynthesis and of course the favorite, the origin of the flagellum. There are lots of changes in single celled organisms and Khan's examples are new to us but should be examined. The question is whether the changes can be explained by naturalistic means or not. For most of this I don't pretend to be very knowledgeable so I shy away from discussing it other than to ask questions about how much change took place and what could have caused this change and to discuss whether current answers are satisfactory or not. For example, Behe listed the flagellum as an irreducible complex system with extraordinary capabilities. Several people have said they have answered Behe's arguments and it is not irreducibly complex but after reading them, I find them wanting and not convincing and this topic is frequently debated here. The third tier is how did a single cell organism form multi-cell organisms and this include how did such complex organisms as the eye arise as these multi-cell organisms arose. How, did brains, limbs, digestive systems, neurological systems arise and all the complex signaling systems between cells and organs. These are immensely complicated but get little discussion except it all happened over time. We have all seen the “it must have evolved” or "it was selected" comment in journal articles and books which is the "begging the question fallacy." This is also an important area for ID but not as much so for Darwinists. Irreducible complexity operates extensively in this tier. Also most of these systems must have developed before the Cambrian Explosion so there is relatively little geological time for these complexities to have developed and no fossil record of such a predecessor. This means that the organisms that appeared during the Cambrian Explosion and their relationship to each other is important. Nothing in the organisms of the Cambrian Explosion is consistent with a gradualist approach to species. It is definitely top down, not bottom up. There is little or no diversity within the various phyla, only isolated instances of various phyla. The diversity came later. A complete contradiction to Darwinian processes. James Valentine, the most knowledgeable of all paleontologists on the Cambrian Explosion, hypothesizes some unknown mechanism that accounted for the uniqueness of each of the phyla. Nothing but speculation but something had to happen because it had to happen without an intelligent input. He begs the question. It is the begging the question fallacy applied continually through out modern evolutionary reasoning. The next tier is the one that gets the most debate in the popular press and that is how did one species arise from another species when there are substantial functional differences between them. This is the majors of macro evolution even though the Cambrian Explosion represents the true epitome of the macro evolution problem. How did insects, birds and bats get wings to fly, how did land creatures develop oxygen breathing systems or how did man get such a big brain and why such a long time for children to develop and where did consciousness come from. How did 4 chamber hearts and warm vs. cold blooded arise. How did birds develop their unique oxygen transport system. How did giraffes develop their unique blood pressure system. There is lots of speculation but no evidence, only a series of "just so" stories. An occasional fossil is brought up to show the progression ignoring the fact that there had to be tens of thousands of other steps for these progressions of which only a handful have been found. I believe the forest animal to whale is now neo Darwinism’s best example here and one that Khan presented and even this has millions of years between slightly similar fossils. Are these occasional fossil example of gradualism in action or do they just represent various examples of different organisms whose origin is at best a mystery. In this tier the ID and the Darwinist are sometimes on common turf fighting it out. But ID is relatively less interested in the issues here but still very interested and annoyingly point out the lack of evidence to back up any "just so stories". There is another part of this tier which I call macro-evolution light or the minors. This is how did a lot of the orders and families develop? For example, within Carnivora how did all the families arise? ID seldom cares about this area but evolutionary biology does. I don’t think ID would care much if someone showed how all the family canidae or felidae arose by gradualistic approaches but yet the evolutionary biologists would claim that would be a major verification of their theory. ID would ask what truly novel functional complex capabilities arose during this process or could all just be explained by micro evolutionary processes working on an original gene pool. In other words is this process just a trivial outcome once an original gene pool was available and basic processes which ID does not dispute are the driving forces. This area is a bridge between the third tier and the final tier. The final tier is what Darwin observed on his trip on the Beagle and what most of evolutionist are talking about when they think evolution, namely micro-evolution and can be explained by basic genetics, occasional mutations, environmental pressures and of course, natural selection. Few disagree on this fifth tier including those who call themselves Intelligent Design proponents yet this is where all the evidence is that is used to persuade everyone that Darwinism is a valid theory. And even here the evidence is thin with a lot of the evidence coming from changes in single celled organisms. The evidence in this tier is used to justify the first four tiers because the materialist needs all five tiers to justify their philosophy of life but the relevance of the evidence in this last tier for the other tiers is scant at best. It should be understood that Intelligent Design assumes the basic neo Darwinism micro evolutionary process and does not dispute its power to perform minor changes to the genome which is so important in areas of medicine and genetic diseases. It would be interesting to see if Khan's examples that he proposed end up in this final tier or are there more substantial changes to the genomes that would require more than normal micro evolutionary processes. What changes happened to the organisms in Khan's examples. So to sum up, my experience is that ID concentrates on tier 1, 2 and 3, a fair bit on the novelties that show up in tier 4 and are not concerned at all with tier 5 which is what Darwin observed and supplies nearly all the evidence for neo Darwinism. This is a framework under which I look at the evolution problems and it has proved useful in understanding objections to ID and how they are usually misplaced. Maybe out of this we can come up with a working definition of macro evolution. One thing that has to be considered is that micro evolution is a process while macro evolution is a result. Macro evolution is not a process so they can not be defined similarly.jerry
December 7, 2008
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This is for Khan since I said I would post it on the 60 minutes thread which turned partially into a thread on macro evolution which has no good definition. So if Green wants to comment also maybe we can come up with a good definition or at least a working definition of macro evolution or maybe some new definitions that have to be made. I am posting this in two parts because it is quite long and the second part is much longer than the first. In order to understand the ID position, one has to understand first the complexity of life and how difficult it would have been to have formed in the first place and secondly the changes in life forms that have happened since life first appeared on earth about 3.5 million years ago and what was required for all these life forms in terms of changes in the DNA or other genetic elements. ID's efforts are two fold. One is detailing the failure of the current paradigm, neo Darwinism/Modern Synthesis or whatever you want to call it, to explain many of evolutionary facts and second to examine what processes could possibly account for the immense complexity of even the simplest life forms and the changes that took place over time and which could have happened by naturalistic processes and which seem unlikely to have happened that way. A lot of evolutionary biology thinking, is based on the strategy of using negative information to exclude other possible options. Certainly, intelligence could account for the complexity of life. No one real doubts that. Richard Dawkins admitted that in Expelled. Modern biology in the 21st century is probably less than a 100 years away from constructing similar systems to life so the possibility of life having an intelligent origin certainly appears feasible. It cannot be ruled out. Those supporting naturalistic solutions essentially use negative arguments implying no intelligence would construct the life as it is found in our world. Arguments from imperfection or theological arguments (used ironically by atheists) based on the evil and cruelty in the world are the basis for their arguments. The main process used to defend a naturalistic approach to evolution, natural selection, has failed to produce anything but trivial changes in biological organisms mainly because it is never presented with anything meaningful to select. And if it has been presented with meaningful changes, then where did these changes come from. The next part is a long analysis of the evolution issues and hopefully we can come up with an accepted definition of macro evolution as a resultjerry
December 7, 2008
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[off-topic] Barry, the thread on Professor Olofsson's article is highly remarkable, and at 325 or so comments, is loading slowly. My not post the highlights in a new thread?Sal Gal
December 7, 2008
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Which type of macroevolution are you referring to? And if its the second, does this need any special explanation? (Considering that geologically rapid events translate into 100's of thousands of years in ecological time).Green
December 7, 2008
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Which type of macroevolution are you referring to? And if its the second, does this need any special explanation?Green
December 7, 2008
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Ok my last post was lost, so I'll try again. It'd be helpful here to clarify terms. 'Macroevolution' has been used in several ways, so ppl are often talking at cross purposes in discussions on it. 1. Events that are sudden on an *ecological* timescale. I.e. where there is a significant genetically based phenotypic change within a *single* generation. Richard Goldschmidt's hopeless monster theory would fall under this definition. As would Gould's heterochrony ideas (i.e. a change in the timing of an organisms developmental program). 2. Events that are sudden on a *geological* timescale. As a palaeontologist Gould also used the term macroevolution in this way too, to refer to large scale phenomena in the fossil record, such as the rapid diversification of a certain clade.Green
December 7, 2008
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OK Rib. If you've got something better than what you've given us so far, I hope you'll stop holding us all in suspense and dish it.Barry Arrington
December 7, 2008
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Barry, Your declaration of victory is a bit premature, given that I haven't yet responded to my interlocutors. Readers, The comments that Barry quotes above come from this thread. There are some 25 later comments at the end of that thread, so if you're interested in following the discussion, you may want to read them first. I've posted a comment there asking that we move the discussion to this new thread.ribczynski
December 7, 2008
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