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Evolutionists: How did legs evolve?

Clete

Truth Smacker
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Scientists often say the same thing about creationists. And yet we have people like Gould and Collins who look at the evidence and say "we need to amend the theory to fit this."



Remember, a transitional form has apomorphic characters of two separate groups. This organism is transitional between basal chelicerates and arachnids because of this. It's not a spider, but it has some characteristics found only in arachnids. It lacks spinnerets. But it had 8 legs and book lungs like those of spiders.

The tetropulmonata split from this group and gave rise to whip scorpions and spiders.



Lacking DNA, we can only go with those apomorphic characters. However, the common origin of whip scorpions and spiders is documented by genetics. Again, it's impossible to prove that God didn't just make everything look like it was evolved. But the evidence indicates evolution.



Yes. Very similar function "common design", but very different details. Dolphins are mammals, more closely related to horses than to sharks. This is the analogy/homology issue I mentioned.



Tuna happen to be warm-blooded. So that isn't a very good way to tell. But if you look at the genes, or the fact that they have horizontal flukes, or that they have fins that with bones like those of mammals, then it makes sense.



If I used warm-bloodedness, I'd say it was a wash, since tuna and dolphins are both warm-blooded.



I'd definitely make it fish-shaped. Similarly, bats, pterosaurs and birds are all "bird-shaped", but again, the analogous nature of their shapes is quite difference from the homology shown in horse legs, dolphin fins, and bat wings. From scratch, I'd make it able to get oxygen from water, and to have a lateral swimming motion. But dolphins are constrained by their history, so they have to breath air and their swimming motion is mammalian,not like that of fish.



Some of that is very instructive. Let me ask you this; what is the absolutely most important structure necessary for a cell to exist?

Let me know what you think.

If I'm being too aggressive here, PM me or say so on the board, and I'll back off. I'm not trying to be offensive.

You're not being offensive, you're being unresponsive. I tell you that none of your so called evidence even looks like evidence except from within an evolutionary mindset and your response is essentially to present me with more of what you think is evidence and to make the assertion that "evidence indicates evolution". No, it doesn't.

You state that apomorphic characteristics are all you've got to go on with fossils and ignore the possibility that this isn't nearly enough information to make the claims you're making. If all you had was apomorphic data, you'd think a dolphin was some sort of transitional form between sharks and something else (horses, I presume).

And you completely miss the point about fish vs mammal, I think probably on purpose.

It may not be your fault really because the point I'm making impacts the issue at the paradigm level. Nothing you've said is one whit more valid to my ears than the arguments Flat Earthers make or Ancient Alien Theorists make. It's all equally delusional. Even the cherry picked data that evolutionists claim as evidence only looks like evidence from within the evolutionary mind set. The strongest proof of this is their universal rejection of any argument related to irreducible complexity, which they reject on a conceptual level. As a result, the most foundational premises upon which evolution is based, that of "slight successive variations" leading to different forms, is so plastic as to be meaningless. Evolutionists accept what would be quantum leaps from one creature to another as the new "slight successive variations" that Darwin looked for.

Darwin, however, knew and stated plainly that any complex system that could not possibly be formed via "slight successive variations" (i.e. irreducible complexity) would falsify his theory. This falsifiability has been baked out of Evolution so long ago that most forget it was ever there! As such it is no longer a theory, its a belief system. A religion that is entrenched in academia and the scientific community to the point that to professionally question it is to end your career. This, I think, is the primary reason why otherwise excellent scientists, like the speaker in the video I posted, feel compelled to give Darwin lip service so as to not accidentally throw the legitimacy of their work into conflict with the modern scientific dogma.

The hard cold fact of the matter is that the first 30 seconds of that computer animation flatly disproves evolution, the rest of the video burns it to the ground and blows its ashes to the four corners of the Earth. You won't see it because you can't. You're as entrenched as anyone. Your evolution colored lenses through which you see the world have been surgically implanted.


Clete
 

gcthomas

New member
Anyway, here's the video. If anyone would like to venture a wild guess as to how anything so wildly complex (irreducibly so in many cases) could possibly have evolved, I truly would love to hear it. Clearly, the legs on those motor proteins didn't evolve from fins.

Clete, irreducibly complex doesn't mean "I can't think how something so wonderful could have evolved step by step", but "here, I've proved that this thing cannot possibly have evolved stepwise, because I have managed to systematically exclude all possible developments".

I hear you saying that kinesins look fantastic, but claiming something is irreducibly complex doesn't make it so. You will need evidence or irreducibility, but I'm not aware of anyone producing such research. Yes, I enjoyed the video, but an alternative interpretation is 'isn't evolution wonderful, look what biochemistry and billions of years of natural selection and random copying errors can do.'

(Incidentally, kinesin family molecules are in use all over the ADP/ATP scene in cells, so this looks to me like a technical appropriation from another function, co-opted by evolution for an alternative role)
 

Clete

Truth Smacker
Silver Subscriber
Clete, irreducibly complex doesn't mean "I can't think how something so wonderful could have evolved step by step", but "here, I've proved that this thing cannot possibly have evolved stepwise, because I have managed to systematically exclude all possible developments".
Nor would any honest person knowingly make such an idiotic argument.

I hear you saying that kinesins look fantastic, but claiming something is irreducibly complex doesn't make it so. You will need evidence or irreducibility, but I'm not aware of anyone producing such research. Yes, I enjoyed the video, but an alternative interpretation is 'isn't evolution wonderful, look what biochemistry and billions of years of natural selection and random copying errors can do.'
No. Irreducible complexity is a very specific thing. You don't need "evidence" for it, you just need it to exist. It's conceptually quite simple.

An organism dies if it's DNA doesn't reproduce itself exactly. The very very very first, most primitive living cell HAD TO have had self-replicating DNA or else it would have died without having passed on it's genetic information to the next generation. Did you see the machine that is responsible for the replication of DNA?

(Incidentally, kinesin family molecules are in use all over the ADP/ATP scene in cells, so this looks to me like a technical appropriation from another function, co-opted by evolution for an alternative role)
No, because it needed to reproduce the DNA before evolution could have co-opted it! Evolution doesn't work if everything dies and everything that doesn't reproduce it DNA does exactly that!

The ability to reproduce is one of the fundamental defining characteristic of living things. The ability to reproduce includes, by definition, the ability to copy DNA, which is a WILDLY complex process that cannot happen by accident and the instructions for which must be encoded within the very DNA that is being copied! That is the very epitome of what it means to be irreducibly complex. You have what is already wildly complex DNA that, according to evolution, just so happened to accidentally encode just the perfect set of instructions that are also wildly complex about not only how to reproduce itself with extreme precision but how to read that code and then perform the needed actions, all of which must be in place from the start or else the DNA dies after one single generation.

The mere fact that life is language based is by itself sufficient to falsify evolution on the basis of irreducible complexity, never mind the incomprehensibly complex instructions that this chemical language explains in perfect detail how to perform!

The only reason anyone - ANYONE - accepts the notion of evolution at all is because the goal post of "slight successive variations" has been inched closer and closer to total meaninglessness.

Clete
 

The Barbarian

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You're not being offensive, you're being unresponsive. I tell you that none of your so called evidence even looks like evidence except from within an evolutionary mindset and your response is essentially to present me with more of what you think is evidence and to make the assertion that "evidence indicates evolution". No, it doesn't.

It's the same sort of evidence by which scientists predicted transitional forms between dinosaurs and birds, the evolution of antibiotic resistance, the microwave background from the big bang, and so on. The reason scientists use this kind of thing is quite simple. It works. It allows us to discover more things about the world.

You state that apomorphic characteristics are all you've got to go on with fossils

No. I said we can't analyze the genetics of those fossils. However, we do have a huge amount of additional evidence from them. For example, oxygen isotope ratios let us know which of the early whales were fresh water and which were marine. The presence or absence of Haversian canals in fossilized bones can tell us how active the organism was. The presence of certain organic molecules in some fossils can tell us about the color of the organism. In one case, the existence of traces of heme in T. rex bone confirmed the prediction of Thomas Huxley over a hundred years ago (using apomorphic characters as evidence) that dinosaurs are most closely related to birds, more than to other reptiles. This is powerful evidence itself that the scientific method does work.

and ignore the possibility that this isn't nearly enough information to make the claims you're making. If all you had was apomorphic data, you'd think a dolphin was some sort of transitional form between sharks and something else (horses, I presume).

No. This goes back to the difference between homology and analogy. Dolphin skeletons clearly show them to be homlologous with those of other mammals. They are only analogous to sharks.

And you completely miss the point about fish vs mammal, I think probably on purpose.

The point is that being warm-blooded is not a good distinguishing characteristic between fish and mammals, since some fish are warm-blooded. It might seem like a piddling detail to some, but it matters when you want to get thing right.

It may not be your fault really because the point I'm making impacts the issue at the paradigm level. Nothing you've said is one whit more valid to my ears than the arguments Flat Earthers make or Ancient Alien Theorists make. It's all equally delusional.

I think that's perceptive. The sort of evidence I've mentioned lets us make testable predictions, and more often than not, those predictions are validated later. So scientists are pretty much unwilling to hear any claim that it's not valid to use. It's all we have.

Likewise, creationists are locked into their particular take on the world, (and there are lots of different kinds of creationism) because what scientists do to learn about the world leads to things they don't want to see.


Even the cherry picked data that evolutionists claim as evidence only looks like evidence from within the evolutionary mind set. The strongest proof of this is their universal rejection of any argument related to irreducible complexity, which they reject on a conceptual level.

Irreducible complexity is fairly common in the world. But it evolves. Even Behe now admits that it could evolve; he just thinks that it doesn't or possibly that such evolution is rare. But he has no evidence to support that idea.

Irreducible complexity happens when a system has several parts, each of which would inactivate the system if it was absent. For example, a regulated enzyme system requires the enzyme, the substrate on which it acts, and the regulator to be present in order to work. It's irreducibly complex because the removal of any part of the system will destroy its function.

Yet this was observed to evolve in bacteria. A series of slight successive variations led first to the enzyme, and then to the regulator.

As a result, the most foundational premises upon which evolution is based, that of "slight successive variations" leading to different forms, is so plastic as to be meaningless. Evolutionists accept what would be quantum leaps from one creature to another as the new "slight successive variations" that Darwin looked for.

The fossil record shows, for example, that vertebrate legs evolved by a series of slight modifications.

Darwin, however, knew and stated plainly that any complex system that could not possibly be formed via "slight successive variations" (i.e. irreducible complexity) would falsify his theory.

He did say that anything that didn't form by changes that were favorable to the organism would invalidate his theory. He and Huxley disagreed on the idea of sudden changes, Huxley pointing out that nothing in Darwin's theory said that it couldn't happen.

A religion that is entrenched in academia and the scientific community to the point that to professionally question it is to end your career.

The man who is the author of the notion of irreducible complexity continued to hold his position as a professor of biochemistry, for example.

Alan Feduccia, who denies the evolution of birds from dinosaurs, is still employed and a highly regarded ornithologist.

Stephen Gould, whose theory of punctuated equilibrium challenged Darwinian theory and eventually modified it, was a highly regarded professor and didn't worry about his job.

Likewise Kimura, Morgan, et cetera. The theory is always being challenged, and every now and then, someone shows that the theory needs correction in a way that convinces most biologists and so it is. (there's no "decider" in science; it's just the consensus that makes theory accepted)

You're probably right in saying that the paradigm gap between biology and creationism is so great as to make them almost incomprehensible to each other.

I was hoping that perhaps the common ground might be that many creationists accept the idea of limited evolution within a "kind." Perhaps we could look at that, if you accept that idea. If not, I think we're at an impasse.

But again, I thank you for your honesty and willingness to listen.
 

The Barbarian

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Banned
I would like to discuss this.

Also, I would like to ask you about Syn 3.1 a man-made species of bacterium, with the smallest number of genes that any living thing has, and it was man-made by cutting out unnecessary genes. It has only 473 genes and was made by Craig Venter in 2016.

It strikes me as a sensible way of cracking the gene code, to start by making the simplest living cell and seeing what each gene does, because, presumably every other cell on the planet will contain the genes necessary to preserve life, and then more genes to make specialised cells. And gene splicing is routine these days. One can design a genome on the computer, almost 3-d print the genome's DNA/RNA, and insert it into cytoplasm. Voila - a new "kind". This should help unlock unicellular organism life. Then it will be a whole another mystery unravelling multicellular life.

The thing is, this bacterium only shows how life as it is for modern prokayotes has a minimum number of genes.

It doesn't show the minimum possible for a self-replicating chemical system, which is how the Earth would have brought forth life in the first place.

I've got to out for a bit. When I get back, I'll write about the other.
 

gcthomas

New member
. You have what is already wildly complex DNA that, according to evolution, just so happened to accidentally encode just the perfect set of instructions that are also wildly complex about not only how to reproduce itself with extreme precision but how to read that code and then perform the needed actions, all of which must be in place from the start or else the DNA dies after one single generation.

This is just not true — you have just assumed that it is. Where do you get the idea that DNA encodes a perfect set of instructions? Or the idea that the system that exists today is not more efficient than the early products of evolution? Or that a smaller subset of systems that is less complex couldn't function?

If you assume, as you have done here, that all of the DNA reproduction system must exist exactly as it is now to work, then I would have to agree with you that it could not have come to be by natural processes. But how can you exclude so casually the possibility of simpler systems that would allow the reproduction of RNA or DNA without the modern complexity/speed/efficiency?
 

6days

New member
iouae said:
...This means that days could be any length, even millions or possibly billions of years.
God defined a creation day for us.

"God called the light “day” and the darkness “night.” And evening passed and morning came, marking the first day."
 

iouae

Well-known member
The thing is, this bacterium only shows how life as it is for modern prokayotes has a minimum number of genes.

It doesn't show the minimum possible for a self-replicating chemical system, which is how the Earth would have brought forth life in the first place.

I've got to out for a bit. When I get back, I'll write about the other.

Prokaryotes are forever swapping genetic material, but there have to be basic genes which have IMO remained present since the Precambrian. But I look forward to being proven wrong.
 

iouae

Well-known member
God defined a creation day for us.

"God called the light “day” and the darkness “night.” And evening passed and morning came, marking the first day."


Without a sunset or sunrise, how do we know how long there was between evening and morning. The sun was only created on day 4 you said. In fact is it logically possible to have an evening without a sunset?
 

6days

New member
The Barbarian said:
It's the same sort of evidence by which scientists predicted transitional forms...
Scientists who are evolutionists predict transitional forms. Scientists who are biblical creationists reject the idea and say that the fossil evidence often better supports the biblical model. One honest paleontologist says even tbe word 'transitional' is ambiguous.

The Barbarian said:
...scientists predicted transitional forms

between dinosaurs and birds
That prediction has sure resulted in a lot of shoddy conclusions. hasn't it? We know from Scripture that God created birds before the land animals.

The Barbarian said:
the evolution of antibiotic resistance
The pre-existing code allowing organisms such as bacteria to adapt, and their unique ways of reproducing and sharing genetic information is strong evidence of our Biblical creator. Life on earth depends on bacteria, and we need bacteria to be able to change and adapt quickly in changing environments.

The Barbarian said:
the microwave background from the big bang, and so on.
Cosmologists, Dr. John Hartnett (100+ peer reviewed articles) says "Recent Cosmic Microwave Background data supports creationist cosmologies"... and so on.

The Barbarian said:
The reason scientists use this kind of thing is quite simple. It works. It allows us to discover more things about the world.
We agree on that. However evolutionary beliefs don't contribute to science, or society. Those beliefs have at times hindered science and harmed people.
 

Right Divider

Body part
The thing is, this bacterium only shows how life as it is for modern prokayotes has a minimum number of genes.

It doesn't show the minimum possible for a self-replicating chemical system, which is how the Earth would have brought forth life in the first place.

I've got to out for a bit. When I get back, I'll write about the other.
There's some solid "science" for you all.
 

6days

New member
iouae said:
In fact is it logically possible to have an evening without a sunset?
Is it logically possible to feed a crowd of thousands with a bit of bread a couple small fish? Yes... of course it's logical based on the evidence of God's Word.
 

The Barbarian

BANNED
Banned
Prokaryotes are forever swapping genetic material, but there have to be basic genes which have IMO remained present since the Precambrian.

Well, yes, the genes are here. Cytochrome C, for example, is conserved with very few changes from bacteria to vertebrates. From a genetic standpoint, you and bacteria are still one kind.

But I look forward to being proven wrong.

In this assertion, you are very correct. The genes have evolved a bit, but so far as I know, every form of cytochrome C works exactly the same way. The few mutations that have appeared in various organisms, don't seem to affect the activity of the enzyme at all.

It's a key part of the Krebbs Cycle, which is so fundamental to all living things on Earth, that it apparently could not be changed without harming the organism.
 
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iouae

Well-known member
God defined a creation day for us.

"God called the light “day” and the darkness “night.” And evening passed and morning came, marking the first day."

What kind of light was this, and how did it differ from light on the other 6 days?
 

iouae

Well-known member
Yep. God says abiogenesis is the way life began. Scientists increasingly find evidence that supports the idea.

I completely doubt both statements.

I doubt there is any fossil or scientific evidence for the spontaneous coming together of all it takes to live and multiply.

To be honest, I am more interested in cracking the current genetic code, than in some simulation of how life is supposed to have happened.

BTW I totally agree that all life either had one origin, or one Originator since we are all built on the same pattern, use the same chemical pathways, have the same genes.
 

iouae

Well-known member
Is it logically possible to feed a crowd of thousands with a bit of bread a couple small fish? Yes... of course it's logical based on the evidence of God's Word.

Do you have to play the miracle card?

I just say the earth rotated, and we had an evening and morning as the sun shon on it. No miracle needed. Ockham's razor wins.
 

The Barbarian

BANNED
Banned
Barbarian observes:
It's the same sort of evidence by which scientists predicted transitional forms between dinosaurs and birds, the evolution of antibiotic resistance, the microwave background from the big bang, and so on. The reason scientists use this kind of thing is quite simple. It works. It allows us to discover more things about the world.

Scientists who are evolutionists predict transitional forms.

And one after another, the predicted forms were later found. Even more convincing, no transitional forms have been found were they shouldn't be. No feathered mammals, no whales with gills, etc.

Scientists who are biblical creationists reject the idea and say that the fossil evidence often better supports the biblical model.

Of course they do. But real scientists predicted the forms we found. This is why evidence matters in science. It works. This is why creationism is not used in science. It doesn't work.

between dinosaurs and birds

That prediction has sure resulted in a lot of shoddy conclusions. hasn't it?

It accurately predicted that there would be feathered dinosaurs, and forms transitional between dinosaurs and birds. Hypotheses become accepted as true when they accumulate enough tests such at those. A theory is a hypothesis that has been repeatedly validated by confirmed predictions.


the evolution of antibiotic resistance
The pre-existing code allowing organisms such as bacteria to adapt

As you say, living things have the ability to evolve new features. That's another prediction of the theory, and as you say, it's been validated by observation.

Darwin’s third expectation - of higher-taxon stratomorphic intermediates - has been confirmed by such examples as the mammal-like reptile groups31 between the reptiles and the mammals, and the phenacdontids32 between the horses and their presumed ancestors. Darwin’s fourth expectation - of stratomorphic series - has been confirmed by such examples as the early bird series,33 the tetrapod series,34,35 the whale series,36 the various mammal series of the Cenozoic37 (for example, the horse series, the camel series, the elephant series, the pig series, the titanothere series, etc.), the Cantius and Plesiadapus primate series,38 and the hominid series.39 Evidence for not just one but for all three of the species level and above types of stratomorphic intermediates expected by macroevolutionary theory is surely strong evidence for macroevolutionary theory. Creationists therefore need to accept this fact. It certainly CANNOT said that traditional creation theory expected (predicted) any of these fossil finds.

YE creationist Kurt Wise Toward a Creationist Understanding of Transitional Forms

You need to accept the fact. All these forms were predicted by evolutionary theory, but are an insolvable puzzle for creationists.

the microwave background from the big bang, and so on.

Cosmologist, Dr. John Hartnett (100+ peer reviewed articles) says "Recent Cosmic Microwave Background data supports creationist cosmologies".

Of course he did. But the theory predicted the existence of that background radiation before it was found. John is just jumping on the bandwagon after the discovery, and shouting "me too!" It's what creationists do, because their beliefs don't result in accurate predictions.

Barbarian observes:
The reason scientists use this kind of thing is quite simple. It works. It allows us to discover more things about the world.

We agree on that. However evolutionary beliefs don't contribute to science, or society.

The prediction of evolution of antibiotic resistance, for example, and the development of antibiotic protocols to slow or avoid such resistance is a good example of evolutionary science having a benefit to society. C'mon.

Creationists have tried to stop that kind of thinking. Those creationist beliefs have at times hindered science and harmed people.
 

iouae

Well-known member
The cyanobacteria have an extensive fossil record. The oldest known fossils, in fact, are cyanobacteria from Archaean rocks of western Australia, dated 3.5 billion years old. This may be somewhat surprising, since the oldest rocks are only a little older: 3.8 billion years old!

Cyanobacteria are among the easiest microfossils to recognize. Morphologies in the group have remained much the same for billions of years, and they may leave chemical fossils behind as well, in the form of breakdown products from pigments. Small fossilized cyanobacteria have been extracted from Precambrian rock, and studied through the use of SEM and TEM (scanning and transmission electron microscopy).

http://www.ucmp.berkeley.edu/bacteria/cyanofr.html

If cyanobacteria have not changed in 3.8 billion years, then why not study them as examples of original genes?

Synechocystis sp had 3167 genes.

That is pretty complex for such a "primitive" species.
 
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