cyborg
deus ex machina
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- Aug 12, 2005
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I'm 100% certain thought exists.
I'm 100% sure that's a meaningless statement.
I'm 100% certain thought exists.
If you would take the time to study this thread and the related thread on the Evolutionisdead forum you would get these answers and links with more information.kjkent1 said:What is the minimum genome size capable of reproduction/division/replication (or whatever other term you may deem relevant)?
articullet said:So then, what are your fine references now that I've given you mine?The Atheist said:I have a B Com in Finance and an MBA in Human Resources. I don't expect to be able to hold a conversation with you on genetics and evolution any more than I'd expect you to know about outplacement. The fact that you're infinitely more knowledgeable than me on the subject doesn't worry me a bit. We each have our specialties.
John Hewitt said:Concerning the nature of a replicator. In some pedantic formal senses, one could argue that even an organism is not a replicator because living things do not copy themselves completely de novo, they do need inputs. So what one needs to do is begin with a definition and concept of replicator that seems relevant. The following point was made by Grand(e) and Dawkins does agree with it. An organism is only a replicator in the sense that it replicates its pattern. It takes in relatively disordered material from the outside world and imposes onto that material a copy of itself, meaning a copy of its own pattern or structure or its data. It is a matter of thermodynamics that a free energy supply is needed in order to perform this data copying and all organism must make use of an exogenous free energy supply.
For purposes of biological and biochemical discussion, a replicator is something that takes in relatively simple, disordered, low energy molecules, and makes use of an energy supply to impose a replica of its own pattern onto the arrangement of those atoms and molecules.
I believe that the smallest known replicators are cells. The smallest known cells are a matter of debate but some candidates include intracellular parasites, such as the PPLOs (pleuropneumonia like organisms) which, I believe, have just a few hundred genes. However, such things live as parasites within other cells and enjoy a very stable environment. I believe the smallest known free living bacteria have of the order of 1200-1300 genes but that is just from memory. There was a post on this forum, not long ago, which identified it but I don't remember its name.
John Hewitt said:The problem is, "How could both the data and the equipment come into being together?" There are really only three general ways in which this could happen.
1. It all happened by chance. The problem with this is that, even on the most generous of assumptions, such a complex machine could not have arisen by chance.
2. It was designed. The problem with this is that it is not really an answer. Whether the designer was God, as the bible suggests, or an alien, as Crick suggests, the designer must himself have been a machine of great complexity and we must still wonder about where that designer came from. Design is, really, a transfer of the problem.
3. Evolution but this too has problems. Evolutionary theory, as presently constructed, describes how one organism can change into another, it does not describe how organisms, as Von Neumann machines, can arise de novo. The task, therefore, is to so construct evolutionary theory that one can describe an evolutionary process in a purely chemical environment and show how that process can lead to the kinds of phenomena we now identify as biology. That is one aspect of what I work on.
John Hewitt said:However, note that I just said is that one must describe an evolutionary process that does not begin with a replicator. That seems to be Articulett's problem with me. She believes in Dawkins and I don't. I do not believe that replicators, otherwise known as Von Neumann machines, can lie at the base of evolution. I think the base of evolution is data and data flows. I think that it is the sun's data supply, as well as its energy supply, that drove evolution within a chemical environment and which led to life.
Kleinman said:At least Dr Schneider put some mathematics to his argument about random point mutations and natural selection. So which PROCESS is going to rescue your theory from the mathematical deficiency that is revealed by Dr Schneider’s model?
Kleinman said:
Do you stamp your foot when you say this?
So you are the evolutionarian who is going to explain what the components of the DNA replicase system were doing before this system evolved? In particular, what were helicase and gyrase doing before DNA could be replicated?
These issues raised here are not contrived faults. Data from an evolutionarian written, peer reviewed and published mathematical model of random point mutations and natural selection shows that this process is profoundly slow when using realistic parameters in the model. Why don’t you give us a realistic selection process which corrects the deficiency in the model? Why don’t you describe to us a selection process that would evolve a gene de novo?
Skeptigirl, what you are having trouble understanding is that without random point mutations, how do you transform duplicated genes to new genes? How do you evolve a gene de novo? Random point mutations are the cornerstone for your theory. Unless you can describe a realistic selection process that allows for rapid evolution of new genes by random point mutations, your theory is a flop.
Why don’t you educate us on a selection process that would rescue your theory from the mathematical vortex that it is being sucked into.
Skeptigirl, this discussion is being reduced down to an accounting problem. Dr Schneider thought he had solved this problem but failed to use realistic parameters in his model. You have no way to account for the differences between the genomes of different kinds of creatures based on random point mutations and natural selection. If you think other processes will solve this mathematical deficiency, educate us. Otherwise, your interpretations of your observations will only satisfy devout evolutionarians.skeptigirl said:I will repeat my two words, genetic science.
skeptigirl said:Whatever you think you are on to here is silly. But I'll play along for a while. Until I get bored.
skeptigirl said:Your underlying premise is totally flawed. We already know evolution is the correct theory because one can follow the genetic trail, manipulate genes, and observe evolution occurring. Am I correct in interpreting your position is that what is observed is not true?
skeptigirl said:Am I correct that you are stating evolution couldn't be correct merely because you are unaware of how the processes work?
skeptigirl said:I know how the processes work. It isn't hard to learn. So what is it you think is impossible? New genes? How silly. There are 4 different mechanisms new genes occur in organisms we observe today.
gene transfer mechanisms
Horizontal gene transfer
molecular genetics
genomes in flux
Gene transfer to plants by diverse species of bacteria
skeptigirl said:There are a multitude of factors you just haven't bothered to learn about here. Unless I have misinterpreted your position. There is a large amount of variation for example in the human genome. When a new selection pressure occurs such as a new epidemic, the genetic diversity assures the genes which may protect some members of the population are already in the population.
skeptigirl said:The CCR5 deletion is one such example. Persons with 2 copies are highly resistant to HIV yet the mutation arose long before HIV infected humans and being a neutral mutation, there are different percentages in populations based on ancestry alone.
skeptigirl said:And here you are discussing some nonsense about point mutations being unable to result in new genes? I haven't even begun to discuss the vast amount of knowledge that has been accumulated in genetic science.
skeptigirl said:Of course, your arguments have been thoroughly discussed both at the Panda's Thumb and Talk Origins, but I suppose in 44 pages those citations have already been posted.
skeptigirl said:The reason I put this material here, when you are discussing "large polynucleotide fragment autocatalyzing a single rather small change in its structure", is because the underlying premise that whatever "gaps" one finds in any particular piece of evolutionary theory is not evidence the theory is in any doubt. It is simply time to move on.
skeptigirl said:On the other hand, if you are merely arguing for one mechanism over another or that this or that gap needs filling or testing, then fine. But to think the "gap" is so wide as to actually put the theory of evolution in doubt is absurd in light of what current genetic scientists have been able to accomplish.
skeptigirl said:As the evidence for evolution is clearly overwhelming, I see the evolution deniers are switching to the new "gap" of life's beginnings. Trying to find Joyce's work I found all sorts of sites proclaiming in essence, "Oh yeah? Well prove this then."
skeptigirl said:I have discussed this work before and the argument was mainly that it hasn't been established yet how the RNA molecules initially occurred. I am not aware if that was a legitimate issue or not since I thought Joyce made a reasonable argument for the occurrence of the molecules. However, it's just one more "gap" and here is an example of it beginning to be filled in.
What I asked for was a straight answer.I have the impression that you are asking me to recite and conform to your personal dogma.
In other words, you agree with Hyparxis that metaphysical naturalism is not adequate to explain life.Does it? Is it? If Hyparxis was unaware of this, he is not alone.
In other words, you are uncertain as to whether metaphysical naturalism is adequate to explain life.How about "dunno?" Would that be a middle ground?
The exception you are championing is an exception to evolution.Am I? Which exception is that?
You could, of course, simply state that it does not. But you are too happy to ally yourself with creationists because they are the enemy of your enemy. This, in itself, should be sufficient evidence that you are not metaphysical naturalist.If you feel that my work entails or implies supernatural intervention, then please point out how it does so.
I think that it is the sun's data supply, as well as its energy supply, that drove evolution within a chemical environment and which led to life.
The quote is from Descartes; "I doubt, therefore I doubt." It is often taken as the one iron-clad assurance of reality. Even if we are brains in vats, if we think we are doubting, we must actually be doubting.I'm 100% sure that's a meaningless statement.
If you are asserting that a non-natural explanation of abiogenesis is possible... then you are pushing the same barrow as the Creationists.I have said that currently nothing is a plausible explanation of abiogenesis...
I have said many times, and I'll repeat it again, that I'm pushing no barrow, other than the one which demands a fair hearing.
You call his many evasions "honest?"To date, John's been honest in the face of concerted attack on him personally.
As I understand it, John's peers have examined his theories and rejected them.You've also mistaken what I said about John's falsifiability. He's picked a task where if current theory is right, he is going to be shown to be wrong and badly so. IDists have the escape clause of "god made it so". John hasn't given himself that out.
As I understand it, John's peers have examined his theories and rejected them.
Yet he has not given up his theories.
In which of the above premises am I mistaken?
Can you provide links or further detail on John's theory being debunked?As I understand it, John's peers have examined his theories and rejected them.
Yet he has not given up his theories.
In which of the above premises am I mistaken?
I'll ask again, did you notice my name?If you are asserting that a non-natural explanation of abiogenesis is possible... then you are pushing the same barrow as the Creationists.
I got the impression that John took umbrage at being hounded over a question he'd already answered. He's shown a lot more patience than I would have been capable of. On that basis, I don't blame him a bit for leading you up the garden path.You call his many evasions "honest?"
Given that we are discussing evolution with a creationist, it is perfectly fair to ask someone bashing evolution whether or not they are a creationist. To take umbrage at such a request, instead of simply saying, "no," is generally considered "the lady doth protest too much."
Did you see what you've written there? Do you know of any christians who would be offended by admission of christianity? All the christian scientists I've seen are proud to state their christian beliefs, especially because they're in a minority.All he had to do was say that yes, he restricts his work to the arena of science. But as you can see, he does not think science is itself limited to the material, observable world. Or maybe not - yet another question he finds too personally offensive to answer.
How many words John's used to answer questions has little relevance. The answers are what matters and he's either lying or not. I choose not. Doesn't make his theories right, though.Why you want to defend someone who refuses to simply answer questions with a single word is beyond me. Apparently you feel Hewitt has a right to question all of evolution, including casting aspersions on the integrity of evolutionary science, and recieve careful and complete answers; but we may not ask a question of his motivation and expect to recieve a single word.
If you would take the time to study this thread and the related thread on the Evolutionisdead forum you would get these answers and links with more information.
For eukaryotes, the smallest known which Paul posted is Pelagibacter ubique with a genome length of around 1.3 million base pairs. For prokaryotes, Mycoplasma sp. is around 900,000 base pairs. There are symbionts with shorter genome lengths but are not free living organisms and are dependent upon a host.
...
I think what kjkent1 is looking for is the minimum size genome for a free living organism which I have posted above. The reason this is important is that the genome length is the dominant parameter in Dr Schneider’s model. Until one obtains a free living organism, one is confined to the concept of abiogenesis which is a weaker theory than the theory of evolution. Evolutionarians can not conceive of a selection process that would evolve a gene de novo in a living organism. What kind of selection process would there be in the primordial soup that would evolve a gene?
Thanks for the link in the previous post.
Now I'm wondering how it's possible that you can make so much sense in half a dozen lines while all Articulett's done in about 6000 lines is scream "creationist".
Sounds reasonable. What do you think of this hypothetical:
http://www.cogsci.indiana.edu/farg/harry/bio/lifestart/lifestart.htm#fp_organic
A summary of the work of Julius Rebek, who I mentioned earlier. A good starting point to find out about replicating systems.
http://en.wikipedia.org/wiki/Julius_Rebek
Can you provide links or further detail on John's theory being debunked?
Not people who just don't like them, actual refutation of his theories?
I'll ask again, did you notice my name?
Since - as far as I'm aware - nobody has even come up with a plausible theory yet to describe abiogenesis, I'll just sit on the sidelines. Maybe you could fill me in on how abiogenesis works, please.
I got the impression that John took umbrage at being hounded over a question he'd already answered. He's shown a lot more patience than I would have been capable of. On that basis, I don't blame him a bit for leading you up the garden path.
Did you see what you've written there? Do you know of any christians who would be offended by admission of christianity? All the christian scientists I've seen are proud to state their christian beliefs, especially because they're in a minority.
How many words John's used to answer questions has little relevance. The answers are what matters and he's either lying or not. I choose not. Doesn't make his theories right, though.
If you want to engage a creationist, you need to nail down what their saying first.
I don't think you understand my comments about infinite regress. They come out of studies into the foundations of logical systems, arithmetic at first, and are due to Frege, Russell, Wittgenstein and, ultimately, Godel. It is sufficient that I say again, what I have said before - as a philosophy, I don't think evolution is testable any more than I think arithmetic is testable.Abiogenesis is not something one can readily explain to someone who doesn't understand the term "false dichotomy" or the way science operates (hint: it doesn't go about disproving all wacko claims especially when there is far stronger evidence along the path we're on...)
<snip>
And according to Hewitt's own theory--Scientists are outside the realm of judging the work of other scientists:
Evolutionary theory, as Darwin well recognized, was not just a new biological theory, it was a new philosophy. This work would argue that it was an epistemology, where an epistemology is a process that generates knowledge when applied to an information set. In this, its most basic form, evolutionary theory should not be seen as a scientific theory as it is doubtful whether it could ever be practically tested. The concept of an evolved creature, possessed of no knowledge except that from evolution, objectively testing a theory of evolution, contains elements of self-reference that might lead to an infinite regress.
This is a common creationist tactic--god is the ultimate infinite regress (who made god?)--if you can't make faith sound like science; make science sound like faith. Who does he think should test the theory of evolution, philosophers? God?
This is a person who questioned my English skills?