The paper in question is actually quite interesting as it argues how some evidence suggests that some heritable phenotypes are "directed" environmentally. The authors conclude that these examples suggest that contrary to the neo-Darwinian assumption, variation may not be totally random with respect to the environment and that this is actually not surprising from a Darwinian perspective.Remember to use the secret handshake whenever you need to get an ID paper past the Darwinian goalies: "Although these observations do not undermine Darwin's theory, ..."
ABSTRACT: According to classical evolutionary theory, phenotypic variation originates from random mutations that are independent of selective pressure. However, recent findings suggest that organisms have evolved mechanisms to influence the timing or genomic location of heritable variability. Hypervariable contingency loci and epigenetic switches increase the variability of specific phenotypes; error-prone DNA replicases produce bursts of variability in times of stress. Interestingly, these mechanisms seem to tune the variability of a given phenotype to match the variability of the acting selective pressure. Although these observations do not undermine Darwin's theory, they suggest that selection and variability are less independent than once thought. Rando OJ and Verstrepen KJ (2007) "Timescales of Genetic and Epigenetic Inheritance" (review) Cell, Vol 128, 655-668, 23.
In fact, these results show evidence of a concept I discussed before, namely evolvability. That there in fact exists a feedback loop from the environment to the source of variation should come as no surprise as selective pressures will select for sources of variability which have shown themselves to be more successful in the past. And while the past is no predictor for the future, such adaptations seem quite logic and quite compatible with the concept of variation and selection. In fact, these findings help us understand why evolution has been so 'successful' against 'all odds'. As the authors point out Darwin himself was quite aware of these possibilities:At first sight, this close relation between variability and selective pressure contradicts today's Neo-Darwinian view on evolution. This is only partially true, as the examples do not argue against the randomness of the majority of phenotypic variability. However, the facts lead us to believe that selective pressure and phenotypic variability are not completely independent. It is easy to imagine how organisms may have developed mechanisms to inluence their own phenotypic variability and escape the total randomness of ''blind'' mutations. Generating variability is a dangerous affair, with many changes leading to reduced, instead of improved, fitness. Hence, organisms that have developed methods to protect vital phenotypes for which abrupt changes in selection are unlikely while maximizing variability for phenotypes that have to respond to frequent variations in selective pressure may have had a selective advantage over individuals that did not have such systems. An analogous argument can be made for mechanisms that regulate the timing of variability.
In other words, Darwin seems to have been a post-Darwinian, far ahead of his time :-) So why this fascination of ID with the concept of epigenetic variability and 'directed' mutations? The answer is surprisingly simple: ID proponents believe that such concepts are anti-Darwinian and thus they form evidence in favor of Intelligent Design. While most people would recognize that logical fallacies in this argument, this seems to be what drives many ID proponents. Amongst the voices of ID, a few voices of reason speak outIt is interesting to note that in his book The Origin of Species Darwin wrote: ''I have hitherto sometimes spoken as if the variations were due to chance. This, of course, is a wholly incorrect expression, but it serves to acknowledge plainly our ignorance of the cause of each particular variation. [The facts] lead to the conclusion that variability is generally related to the conditions of life to which each species has been exposed during several successive generations.'' Hence, both Darwin and Lamarck, two of the founders of evolutionary theory, predicted that evolution itself may favor the development of self-guiding mechanisms, maximizing variability where and when it is most likely to yield positive changes while minimizing phenotypic variability when and where it is not needed. It is becoming increasingly difficult to argue that their general idea of nonrandom evolution was entirely wrong.
At least, once again ID proponents have not only shown the scientific vacuity of Intelligent Design, but they also have shown how reading an abstract may not be sufficient. At least I believe I have shown that most ID proponents, who object to the concept of 'random mutations', would make great Darwinists.Darwin never used the term random mutation. That was the product of the research by Morgan in the 1910's and 1920's which along with Mendelian genetics formed the basis of the modern synthesis in the late 1930's, early 1940's. Darwin, I beliieve used the term spontaneous variations. So the papers by Schwartz, Woese, Margulis, etc. and that by Rando in this thread are in sync with what Darwin hypothesized as happening. The main difference is that Darwin nor anyone else witnessed anything but small changes happening through artificial selection so he proposed slow changes in nature just as Lyle proposed slow changes in geology.
— Jerry
172 Comments
Hawks · 2 March 2007
I think that Dembski's (and probably most IDists) fascination with this sort of phenomenon springs from their misconception that mutations according to any evolutionary theories has to be completely random (however you want to define that term). So, if some mutations are found not to be completely random (again, however you want to define the term) then they immediately see that some sort of teleology (which is one of their hallmarks of intelligence) has to be involved. This is obviously a non-sequitur, but try telling that to Dembski et al.
sparc · 2 March 2007
Mark Perakh · 2 March 2007
Even Dawkins, a certified defender of Darwinian ideas, in his Blind Watchmaker book, critiqued "mutationists" who exaggerated the randomness of mutations, and asserted that the randomness of mutations has limitations. If new experimental data point to the feedback in the evolutionary process, this in no way contradicts the main postulates of evolution theory. Of course, it could not be expected that Dembski would properly appreciate such data - just recall that in his fruitless "explanatory filter," as I pointed out years ago in several essays, and again in my book Unintelligent Design (Prometheus 2004), Dembski completely ignored the role of feedbacks in the causal chains leading to observed events.
Anonymous_Coward · 2 March 2007
Sophophile · 2 March 2007
Why is this not a point for ID?
At Kitzmiller, one of Behe's main points was the insufficiency of purely random mutations plus selection to build complexity.
I don't remember any evolutionist responding that mutations are non-random; instead they responded that purely random mutations plus selection is sufficient.
Is this "tuning" feedback a third mechanism for evolution alongside mutation and selection? If so, doesn't that bolster the ID case?
Unsympathetic reader · 2 March 2007
An additional, *natural* mechanism of evolution does not bolster the ID case.
What were talking about here is evolvability and the mechanisms that provide better responses to environmental challenges. "Can evolvability evolve?" is the question that IDers need to *ask*, instead of asserting: "A system with feedback! It must have been designed!"
Understand that Dembski is currently tuned to picking out references similer to common engineering concepts in biological research. That may partly explain his fascination with the paper (The contents of which are beyond his ken).
Pat Hayes · 2 March 2007
Even the abstract makes clear that evolution is happening. Even if new evidence is uncovered that tweaks how variation and natural selection drive evolution it's a huge problem for intelligent design.
No matter what they say about the one or two ID "theorists" who accept common descent, the movement will die the moment it accepts the notion that all living species, including humans, evolved -- by whatever means -- from a common anscestor.
The ID Generals can muddy the water, which is what Dembski is doing here, but they can't abandon special creation without having their creationist army desert.
Mark Perakh · 2 March 2007
Anton Mates · 2 March 2007
realpc · 2 March 2007
Darwin was not a neo-Darwinists. Neo-Darwinists believe that genetic variations are completely independent of the environment, and have no relationship to the survival challenges of an organism. Selection is rational, variation is blind.
This paper shows some degree of rationality in variation, threatening a fundamental assertion of neo-Darwinism. It opens a door to similar types of discoveries.
What if it turns out that not only the quantity of variation, but also the quality, can respond to environmental pressures? Of course we don't know where this kind of research will lead eventually, but we know that it does not support neo-Darwinism.
Darwinism and neo-Darwinism are not the same theory. Lamarckianism is denied by neo-Darwnists, for example, but Darwin considered it to be one possible mechanism.
The question is whether information can travel from the envirnoment to the genome, or not. Recent research suggests that it can, neo-Darwinism insists that it cannot.
Reed A. Cartwright · 2 March 2007
When we talk about "random mutation", we are saying that mutations are random with respect to the fitness needs of the organism. Mutation rates can go up in response to environmental stress and certain phenotypes may be buffered against the effects of mutation. However, these do not change the fact that organisms cannot predict what genotype they will need to survive and adjust their DNA accordingly.
Raging Bee · 2 March 2007
Neo-Darwinists believe...
Given how badly, and how consistently, you misstate and misrepresent just about every subject on which you've spoken here so far, and given that you never even acknowledge our efforts to correct your misstatements, why should we think you have any clue about what other people "believe?"
PvM · 2 March 2007
MarkP · 2 March 2007
Steve Reuland · 2 March 2007
realpc · 2 March 2007
If the quantity and quality of variation responded to environmental pressures, that would only make the evolutionary process that much more powerful.
Sure, but we are debating neo-Darwinism, not evolution. Evolution is established and there is no need to keep on arguing about it.
Neo-Darwinism, the currently accepted theory, says that the variations leading to evolution do NOT occur in response to survival pressures. The research we are discussing shows that they DO respond, at least quantitatively. Neo-Darwinism would have to be modified to accommodate these observations.
It's also possible that variations can respond qualitatively to environmental pressures. You say that would strengthen evolution theory -- sure it would. But it would demolish the currently accepted theory. And it would strengthen the ID theory.
ID does not require any supernatural intervention. If the genetic variations demonstrate some kind of intelligence or purpose in response to a changing environment, that would support ID.
We do not know why or how variations respond to environmental changes. It is enough right now to acknowledge that they show responsiveness and purposefulness.
J. G. Cox · 2 March 2007
What the IDers are ignoring is that the molding of mutation probabilities outlined here is itself a heritable trait subject to natural selection. Whether genetic or epigenetic, this tendency is something passed down from generation to generation, and has likely been selected for. One might argue that directed mutation is not like normal phenotype production in that it only increases the chances of (hopefully) ending up with a phenotype appropriate for a new or harsher environment; however, given that phenotype production is a probabilistic process anyway, this argument doesn't amount to much.
Arne Langsetmo · 2 March 2007
Dembski's a "mathematician". He's the king which means he's allowed to define random.
"Random" is not random, either. Depends what you're looking for. A truly "random" number sequence in the usual definition of such exhibits a "structure" in itself, that of being "random". That is why such "random" sequences are used for statistical analyses such as bootstrap statistical methods.
Cheers,
Glen Davidson · 2 March 2007
Popper's ghost · 2 March 2007
trrll · 2 March 2007
Dan Gaston · 2 March 2007
The content of the paper is hardly surprising, at least I don't think many people would be surprised as it isn't really a new or revolutionary idea, just another documented example. But coming from a molecular evolution perspective the discussion of these sorts of mechanisms has been around for some time.
Sir_Toejam · 2 March 2007
J. Biggs · 2 March 2007
PvM · 2 March 2007
realpc · 2 March 2007
In other words, ID is nothing more than the environment affecting genetic variation?
No, that is just an example of how evolution is much more complex than the ND theory suggests.
There is no clear boundary between NDE and IDE, or between natural and supernatural. The terminology has never been completely defined.
I think evolution theory is in a transitional phase, and IDE is helping it along. ID theorists acknowledge the importance of mutations and natural selection. The question is whether or not the mutations are independent from the organism's need to evolve, and NDE says they are.
Of course you can say, and someone here did, that the ability to change the frequency of mutations, or the type of mutations, could itself be the result of purposeless mutations and selection. So no matter how much purpose and direction anyone discovers in the mutation process, a neo-Darwinist can say it somehow goes back to blind chance. Well, that's the advantage of having an unfalisfiable theory!
PvM · 2 March 2007
GuyeFaux · 2 March 2007
J. Biggs · 2 March 2007
RBH · 2 March 2007
MarkP · 2 March 2007
David B. Benson · 2 March 2007
Dembski, a great Darwinist?
Puleese!
realpc · 2 March 2007
David B. Benson · 2 March 2007
Bafflegab from realpc...
snaxalotl · 2 March 2007
it's important to point out to creationists that random variation is merely a not-ideal-case scenario. variation and selection is so good, it works EVEN IF the variation is random. but we see many very successful examples where the variation is neither random nor particularly intelligent. the same people who believed putting your finger in a cow's bottom cured baldness built magnificent cathedrals. the prime mover, separating them from cavemen, was not intelligence or will but rather the cumulative knowledge of keeping good innovation and forgetting bad innovation, regardless of how poorly conceived that innovation is. if I invent a tallow candle because tallow rhymes with glow, people will still copy the idea. creationists love love love rules, but in the unsophisticated manner of eight year olds playing monopoly. if the "rule of random variation" is invalid, they win the argument. it helps a lot if you can identify some rule they have assumed, then point out that it isn't actually a rule
fnxtr · 2 March 2007
Flint · 2 March 2007
We probably don't need to be biologists to understand feedback mechanisms, even if they are complex. Imagine that excessive amounts of variation impedes reproduction. So the organisms that reproduce best won't have excessive variation - they'll have better error correction.
But imagine that eliminating too much variation impedes adaptation, and extinction wipes out those species whose error correction is too stringent, while preventing speciation.
So who's left from the first cut? Those goldilocks lineages that vary *just enough*, not too much and not too little. Now, in what ways do these winners compete in round 2?
It's not conceptually that mind-bending to imagine that error-correction that responds to stress by permitting more variation would compete against error-correction that shows no such sensitivity, and the former might end up reproducing better. Just more feedback, that's all. If Darwin didn't hypothesize such a thing, so what?
And so evolvability evolves, because the only rule here is "whatever works". Whatever does not work, dies off. I'd be amazed if there weren't even deeper levels of evolution, because the competition never sleeps.
David B. Benson · 2 March 2007
fnxtr --- realpc is almost surely Charlie Wagner...
JohnK · 2 March 2007
Dan Gaston · 2 March 2007
stevaroni · 2 March 2007
PvM · 2 March 2007
PvM · 2 March 2007
I have come to the conclusion that Realpc is a troll who is trying to discredit ID both by showing an unfamiliarity with the concepts of ID as well as by showing an unfamiliarity with concepts of science.
MarkP · 2 March 2007
Sir_Toejam · 3 March 2007
I have come to the conclusion that Realpc is a troll who is trying to discredit ID both by showing an unfamiliarity with the concepts of ID as well as by showing an unfamiliarity with concepts of science.
you must be better able to determine motives then.
I only got the troll part out of his ramblings.
Sir_Toejam · 3 March 2007
Popper's ghost · 3 March 2007
Popper's ghost · 3 March 2007
Popper's ghost · 3 March 2007
realpc · 3 March 2007
Go learn some science; your conception of gravity is very 18 century.
I know what Einstein said about gravity. That doesn't make it any less "super-natural."
PvM · 3 March 2007
Seems that others have come to agree that realpc has defined intelligent design in a 'unique manner' which ignores all the common definitions by ID proponents.
In other words, ID now seems to have become that which is not NDE, or perhaps findings in the area of biology which cast a new light on evolution.
In other words, ID is nothing more or less than the science of evolutionary biology. Indistinguishable and thus also very irrelevant.
It's good to see that some ID proponents have come to realize the scientific vacuity of ID and are trying to redefine it.
Why not be upfront about it. ID as it has been defined is scientifically vacuous and I want to define ID to be nothing more or less that evolutionary biology.
David B. Benson · 3 March 2007
Sir TJ --- Maybe this is a different realpc? Somehow I doubt it...
realpc · 3 March 2007
ID uses statistics and information theory to analyse the probability of species originating by random mutations plus selection.
Over at http://scienceblogs.com/evolutionblog, Jason Rosenhouse presents his pro-NDE argument. He starts by saying NDE is a valid theory because -- why not? He can't think of anything not to like about it. Then he mentions dogs -- all those varieties created by artificial selection. He forgets that a new breed of dog does not involve any increaese in complexity. Then he talks about genetic algorithms, and of course neglects to mention how simple they are compared to even the simplest organism. Then he mentions the mountains of evidence that support evolution. And, finally, he tells us how important the selection process is in the evolution of science.
So he has presented convincing arguments for evolution and for selection, but his argument for NDE depends entirely on genetic algorithms and the fact that he sees no problems with NDE.
Well ID research is about seeing problems with NDE. ID accepts evolution and natural selection. Anyone who says otherwise is misinformed about ID. Rosenhouse has no arguments to support evolution by selection from unguided variations.
If an organism can increase its mutation rate in response to environmental pressures, maybe it can also increase the type of mutation generated. If that were true, then we would have to question the central tenet of NDE -- that the mutations are in no way a response to environmental conditions.
If it turns out genetic mutations are somehow guided, we still would not know what guides them or how. I suspect that DNA is a much more complex program than most biologists realize. I think this will be a problem for computer science. For example, DNA includes meta programs, or higher level control programs. Maybe it also includes meta-meta programs, and so on. We can be sure that DNA is unimaginably more complex than anything written by humans.
An important question is how "random" genetic mutations are. Is there any research on whether certain types of mutations occur more frequently under certain conditions? Or is it only the quantity that responds to environmental stress?
Sir_Toejam · 3 March 2007
RPC, you're just about as insane as this guy:
http://www.antievolution.org/cgi-bin/ikonboard/ikonboard.cgi?s=45e9f62409a8ce8e;act=ST;f=14;t=3399
You should go have a conversation with him.
MarkP · 3 March 2007
PvM · 3 March 2007
realpc · 3 March 2007
Chinchillazilla · 3 March 2007
realpc · 3 March 2007
...Well, yes. The problem is that they REJECT EVOLUTION.
Well they don't. Show me a quote from Behe or Demski saying they reject evolution. You, along with many others, have been misinformed.
PvM · 3 March 2007
ID doubts the process of Darwinian evolution. If, as Darwin already 'predicted', variation is not truly random, then so much better for evolutionary theory. Of course nothing gives credibility to ID's thesis.
Sir_Toejam · 3 March 2007
Popper's ghost · 4 March 2007
Popper's ghost · 4 March 2007
Sophophile · 4 March 2007
Wow. Went away for the weekend, now so much to read!
May I just say that I consider it an honour to receive a direct shellacking from Mark Perakh. Mark: I have read and admired lots of your work.
:: goes off to read lengthy realpc-initiated train-wreck ::
Popper's ghost · 4 March 2007
realpc · 4 March 2007
Anonymous_Coward · 4 March 2007
realpc · 4 March 2007
That person specifically wrote "more complex description". "Description" is the keyword there. In the case of descriptions, subsets are more complex to describe, especially using formal logic notations, than supersets.
Yes, and you should try reading the context. I said creating a new breed of dog is not creating something more complex. He replied with that definition. It was irrelevant to the discussion and I should not have bothered to answer.
Anonymous_Coward · 4 March 2007
steve s · 4 March 2007
MarkP · 4 March 2007
PvM · 4 March 2007
Richard Simons · 4 March 2007
realpc:
You assert that "a new breed of dog does not involve any increase in complexity."
How do you know? How has it been measured and by whom? What units did they use? Why do you think that no biologist refers to differences in complexity when describing two similar organisms but only when comparing, say, a flatworm with a lobster?
Like virtually all terms beloved by IDers and creationists they have come up with neither a useful definition nor a means of measuring its value in any organism.
Sir_Toejam · 4 March 2007
realpc · 4 March 2007
Hey Toejam,
There is no way I will answer a post from some idiot who calls me an idiot. If you want answers, learn how to be a human being.
Sir_Toejam · 4 March 2007
translation:
"I haven't the slightest clue how to respond to that, since I don't understand what I mean by information to begin with."
how clueless can one troll get, I wonder...
Sir_Toejam · 4 March 2007
...oh, and if you want to give the impression you know what you're talking about... well, maybe you just shouldn't even try.
Seriously, you're completely hopeless.
Glen Davidson · 4 March 2007
Popper's ghost · 4 March 2007
Popper's ghost · 4 March 2007
Popper's ghost · 4 March 2007
Popper's ghost · 4 March 2007
Popper's ghost · 4 March 2007
Finally, to top this off: "odd numbers" is more complex than "numbers". It isn't possible to talk about things without dealing with their descriptions. Try explaining poodles without referring to dogs. Of course, if a population of poodles is left to breed in the wild indefinitely, eventually mutations may obliterate their poodle-ness or even their dog-ness. Perhaps eventually the poodle genome will produce only a communicable tumor. But if "increase in complexity" is a law of nature, then such a tumor must be more complex than a poodle, in some way understood only by "realpc".
Sir_Toejam · 4 March 2007
Anonymous_Coward · 4 March 2007
Popper's ghost · 4 March 2007
Anonymous_Coward · 5 March 2007
realpc · 5 March 2007
Subsets are more specific, not more complex. "Banana" is a more specific symbol than "fruit," but these two symbols cannot be compared in terms of complexity. One set is more heterogeneous and includes more members, but that does not make it less complex.
Complexity is something we understand intuitively but which is difficult to quantify.
It would be very hard to make the case that a banana is more complex than a fruit, simply because the symbol "banana" refers to a more specific category. The same object can be referred to either as a banana or as a fruit. Therefore, the label used to refer to an object in no way reflects the degree of complexity of that object.
The complexity of a particular animal is exactly the same whether I refer to it as a "dog" or as a "poodle."
PvM · 5 March 2007
Anonymous_Coward · 5 March 2007
MarkP · 5 March 2007
realpc · 5 March 2007
Ok, then explain why you think complexity is added when a new breed of dog is created. I don't know why I bothered with such an inane argument. You have to be a very devout neo-Darwinist not to see that some, but not all, evolution results in increasing complexity. A jellyfish is more complex than an amoeba, and a shark is more complex than a jellyfish. There are fanatics who deny this, of course.
It would not make sense to say that a canary is more complex than a sparrow, or a dog is more complex than a cat, or a poodle is more complex than a dog.
Sometimes evolution results in obvious increases in complexity, and that is the aspect of evolution which is not understood.
The ID - ND debate is over whether ND can explain the obvious increases in complexity which have occurred. We know that ND can explain domestic breeding, and that it can explain some adaptation in existing species, and possibly some aspects of the creation of new species which are not more complex than their parent species.
We know that ND fails to explain the origin of life in the first place. And some of us believe it fails to explain the origin of new species that are obviously more complex than their parent species.
PvM · 5 March 2007
Henry J · 5 March 2007
What if the amoeba has more DNA than the shark?
ben · 5 March 2007
fnxtr · 5 March 2007
realpc is trying to use the micro/macro argument, without actually having the cajones to use the terms.
realpc · 5 March 2007
You admit that science has no verified explanation for the origin of life. So why not admit it has no verified explanation for the evolution of increasingly complex species?
We could define complexity in terms of how many different necessary parts a machine has, for example. The more inter-related, differentiated, specialized, and necessary, parts, the more complex, I would say. That may not be a perfect definition, but it's a starting point.
Raging Bee · 5 March 2007
You admit that science has no verified explanation for the origin of life. So why not admit it has no verified explanation for the evolution of increasingly complex species?
Because those are two completely separate and different issues.
We know that ND fails to explain the origin of life in the first place. And some of us believe it fails to explain the origin of new species that are obviously more complex than their parent species.
And have "some of us" produced peer-reviewed work proving that such evolution is impossible? Have "some of us" come up with a specific alternative theory that fits the available evidence, and testable hypotheses by which we might verify such a theory?
Or are "some of us" just a bunch of idiots who hate being forced to process and accept new information?
GuyeFaux · 5 March 2007
Aureola Nominee, FCD · 5 March 2007
Define "different necessary parts", please. The definition of "parts" in biological entities should be especially fun.
GuyeFaux · 5 March 2007
What a surprise, this new-age nitwit has derailed yet another thread with his content-free logorhea.
Here's a clue: provide a definition for the terms you bandy around, and you will have something substantive.
Sir_Toejam · 5 March 2007
Sir_Toejam · 5 March 2007
Sir_Toejam · 5 March 2007
MarkP · 5 March 2007
PvM · 5 March 2007
Popper's ghost · 6 March 2007
Popper's ghost · 6 March 2007
Anonymous_Coward · 6 March 2007
Popper's ghost · 6 March 2007
Popper's ghost · 6 March 2007
Popper's ghost · 6 March 2007
Anonymous_Coward · 6 March 2007
Popper's ghost · 6 March 2007
Anonymous_Coward · 6 March 2007
Popper's ghost · 6 March 2007
Popper's ghost · 6 March 2007
realpc · 6 March 2007
GuyeFaux · 6 March 2007
GuyeFaux · 6 March 2007
Raging Bee · 6 March 2007
If everyone strives to show off all the technical details they know or can find at wikipedia, it confuses rather than clarifies.
So now the person who doggedly repeats the same refuted assertions over and over, based on concepts he won't even try to define, is trying to tell us how to discuss complex scientific issues? That's hilarious!
If what we're saying confuses YOU, realpc, it is because you have no idea what we're talking about, and you should stop pretending you have anything to contribute to an adult conversation. Just because you don't, or won't, understand the facts and/or logic offered in response to your vacuous blithering, does not make it meaningless or irrelevant.
GuyeFaux · 6 March 2007
PvM · 6 March 2007
Seems that realpc has come to realize that his 'definitions' of complexity are not really that workable. Nevertheless, he has yet to accept that processes of variation and selection can in fact increase information and complexity (in the Shannon sense).
So far his 'arguments' are based on subjective 'feelings' that life has gotten more complex and that evolutionary theory cannot explain this.
Steviepinhead · 6 March 2007
Richard Simons · 6 March 2007
realpc:
Suppose we had two strawberry plants, both of which have flowers with protective structures, organs to attract insects and male and female parts. These go on to develop fruits and complex seeds. However, one of the plants also has side shoots that elongate to produce runners that will produce plantlets away from a parent plant. It no longer needs to produce flowers and seeds to reproduce. According to your definition of complexity ("The more inter-related, differentiated, specialized, and necessary, parts, the more complex") the second plant is therefore less complex, even though it has an extra feature. I am sure this is not what you intend.
Being able to measure the complexity of organisms is not an issue with biologists. However, perhaps this is something you could persuade IDists to work on as they seem to be the only people who care about it.
Henry J · 6 March 2007
Re "A jellyfish is more complex than an amoeba, and a shark is more complex than a jellyfish."
What if the amoeba has more DNA than the shark?
Popper's ghost · 6 March 2007
Popper's ghost · 6 March 2007
Popper's ghost · 6 March 2007
Aryaman Shalizi · 6 March 2007
I'm a bit confused by the notion that (to paraphrase) "breeding... does immediately introduce increased information, and thus complexity," at least with reference to the specific example of domesticated dog breeding. Perhaps this is due to the shifting definitions of complexity and information that RPC has thrown around, but here's how I understand the problem (from the perspective of a biologist with essentially no background in information theory or computer science): The reason pure-bred dogs are pure-bred is because their genetic variability has been reduced through repeated inbreeding. Any given pure-breed dog is more likely to have the same two alleles of a particular gene, and thus be less complex than any given mixed-breed or mutt. At the population level, one would expect the set of alleles in a pure-bred population to be smaller than the set of alleles in an outbred population, and thus easier to describe for the former (pure) population than the latter.
Furthermore, isn't saying "the genome of a new breed carries information about the intent of the breeder" a bit like saying that "the genome of any successful reproductive event carries information about the intent of the environment"? How would one discern the "intent" of a breeder who intecrosses a small population of animals in the genomes of the resultant offspring from the absence of intent in genomes of the offspring resulting fom a few animals stranded on a desert island?
Popper's ghost · 6 March 2007
Popper's ghost · 6 March 2007
GuyeFaux · 6 March 2007
Popper's ghost · 6 March 2007
Popper's ghost · 6 March 2007
Aryaman Shalizi · 6 March 2007
PG and GuyeFaux-
Thanks for the clarification and linkage; is there an emoticon for light bulb going off? If I understand correctly the increase in information in this context is that within the pure-bred population I can predict with greater accuracy the specific allele at any locus because of the reduced variability within a pure-bred population as opposed to an out-bred population, right?
Re your comment 164307, PG, for what it's worth I was thinking of a hypothetical situation as follows: A farmer has a problem with rabbits eating her crops and weasels eating her chickens; she wants to breed a dog that can go after both, and selects dogs with stockier legs and longer bodies that can chase both rabbits and weasels into a burrow for breeding; after some generations, she has a Dachshund. Now, suppose a pair of dogs are let loose in a remote area where the only prey available are rabbits and weasels; I wouldn't be surpised to observe something like a Dachshund evolve after a sufficient interval. Of course, one might observe other phenotypes, but I was thinking from the perspective of finding a free-living Dachshund-like dogs in an area where all they had to eat were burrowing animals. That was the sort of scenario that had me puzzled about how you could discern breeder intent form the vagaries of a specific evolutionary pathway, just from genomic comparisons. Thanks for the clarification.
realpc · 6 March 2007
realpc · 6 March 2007
Information flow from environment to genome is what is commonly called selection.
You are very confused. NDE says that the genone within an individual organism does NOT respond to changes in the environment. Selection modifies the species, not an individual.
MarkP · 6 March 2007
You are very confused. NDE says that the genone within an individual organism does NOT respond to changes in the environment. Selection modifies the species, not an individual.
No shit Sherlock. For you to think anyone posting here needed to be told that shows who the really confused one here is.
realpc · 6 March 2007
No shit Sherlock. For you to think anyone posting here needed to be told that shows who the really confused one here is.
No shit yourself. I was responding to this:
Information flow from environment to genome is what is commonly called selection.
GuyeFaux · 6 March 2007
Popper's ghost · 6 March 2007
Popper's ghost · 6 March 2007
Sir_Toejam · 6 March 2007
RPC is all over the board, and it's like he's deliberately trying to be obtuse.
my conclusion is that he's simply a sock puppet for somebody like Wagner.
really, his posts are so idiotic and so free of content, that I don't think there is really any reason to repond to them further, even for the lurkers.
well, there is the whack-a-mole aspect of it, but other than that.
David B. Benson · 6 March 2007
Popper's Ghost --- Both.
Popper's ghost · 6 March 2007
I would note the the environment does change the genome of unicellular organisms, and that such changes aren't necessarily random with respect to fitness, but this is no more "intelligently guided" than our immune system intelligently guiding the effects of disease organisms on our bodies. Certainly such non-randomness isn't any support for ID, nor does the "current theory" "insist" that such effects don't occur; scientific theories aren't conscious agents, capable of "insisting" anything; they are dynamic explanatory frameworks that shift in response to accumulated evidence.
PvM · 7 March 2007
Glen Davidson · 7 March 2007
Washoe Chimp · 7 March 2007
Washoe not know plenty words.
Washoe not know big words.
Words Washoe know, Washoe know good.
Not like "realpc" hairless chimp.
realpc · 7 March 2007
Gravity being a physical phenomenon.
In what sense, exactly, is gravity "physical?" You mean it has been described by physicists? Before Einstein, "physical" referred to the world of our senses, as it still does in casual conversation.
We no longer have a clear definition of the words "physical" or "material." We know that matter is made of empty space and "particles" that are not particles at all.
Gravity is still a mystery, however physicists describe it. What about "strings?" Are they physical, well-understood, scientific entities, just because physicists describe them mathematically?
A law of complexity could be a reasonable working hypothesis, and is not any stranger than many accepted constructs in physics.
Sir_Toejam · 7 March 2007
RPC, you're lost in a world of definitions of your own making.
for your own safety, you should stop using the word "we" at any time.
GuyeFaux · 7 March 2007
Glen Davidson · 7 March 2007
Glen Davidson · 7 March 2007
realpc · 8 March 2007
fnxtr · 8 March 2007
Aryaman: "dachshund" means "badger hound", so you were close. And if they actually ate badgers, then yeah...
Raging Bee · 8 March 2007
Unfortunately, some people here have a naive belief that words can be defined perfectly and easily.
Yeah, right, yet another dodge. Just because YOU can't work with exact and consistent definitions of words and concepts, doesn't mean it can't be done.
This is true Stupidity: refusing to understand that the knowledge and talent one lacks even exist at all. It's the sound of a rigid, lazy "student" insisting that a task he can't -- or won't -- master is impossible, while those who have mastered it laugh at him, and his teacher and parents cringe in embarrassment.
Glen Davidson · 8 March 2007
Glen Davidson · 8 March 2007
continuing from above:
Of course the direction of the universe is toward increasing complexity, you're just too stupid to understand what that actually means. Or as Oded Kafri (author of the above quote) put it more kindly, yours is a "mystic idea." It is thus not surprising that pseudoscientists like yourself and the IDists constantly believe this mystic idea, as you certainly don't know anything about science (or how to use words, recognize truth, or how to refrain from stupidly lying).
Glen D
http://tinyurl.com/35s39o
Glen Davidson · 8 March 2007
And because Kolmogorov is an important figure in the relatedness of information and entropy, I should point out that I added an "e" at the end of "Kolmogorov" (I wrote "Kolmogorove") in my quote from Kafri's paper.
Glen D
http://tinyurl.com/35s39o
Torbjörn Larsson · 8 March 2007
Raging Bee · 8 March 2007
And every winter, water defies entropy whenever it freezes from a disordered liquid to an orderly crystalline structure. Is this proof of a "designer?"
PvM · 8 March 2007
AC · 8 March 2007
Popper's Ghost · 9 March 2007
Sir_Toejam · 9 March 2007
hey, RPC -
how many licks does it take to get to the tootsie roll center of a tootsie pop?
Helen Nanney · 9 March 2007
All you need to do is read my E-book on "The Intelligent Designer" or order my paperback, "journey Into the Light" from any on line or local bookstore, by visiting my web site http://www.journey-book.com and click on e-book.
All the controversy will be settled once and for all. Theory and all the other speculations will not answer the questions, enlightenment can offer. After all these years of research science should have proof beyond a doubt. I have proof beyond a doubt. There is too much to document in this space, so if you are really interested in the science of the universe, enjoy, and it is a science beyond what you may expect.
MarkP · 9 March 2007
No, please, document it in this space. I love seeing swine shredded.
Popper's Ghost · 10 March 2007
I doubt that someone who can't even spell her own name can provide "proof beyond a doubt".
Henry J · 10 March 2007
Re "All the controversy will be settled once and for all."
If there really was one book that would settle the "controversy", there wouldn't be a controversy.
Henry
Torbjörn Larsson · 11 March 2007
victoria · 7 July 2007
;)Man is only happy as he finds a work worth doing, and does it well.