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Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined: |
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Author | Topic: The story of Bones and Dogs and Humans | ||||||||||||||||||||||||||||||||||||||||||||||
RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined:
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It's one thing to look at charts of descent, it's another to look at the actual bones of actual fossils. Let's start with a short comparison to dog variations. Creationists like to point to dogs and say that they show plenty of variation without becoming a new species.
Dog variation indeed shows how much phenotypes can vary within a species and still remain a species. Dog variation is achieved through artificial (man-made) selection, but it can show us what is possible in nature when we look at the evolution of species. We can use the variation observed in dogs as a metric for how much can occur within a species, and then look at the difference between species to see if that shows more or less variation than seen in dogs. If we look at the variation in skeletons between Humans and Chimps (note skeletons not scaled the same): ![]() ![]() Is the variation more or less than the variation seen in dogs? If we add Gorillas to the mix (note skeletons not scaled the same): ![]() ![]() ![]() Is the variation more or less than the variation seen in dogs? Now let's add a composite Australopithicus, based mostly on Lucy, but with parts added from other fossils, such as skull and feet (note skeletons not scaled the same): ![]() ![]() ![]() ![]() Is the variation more or less than the variation seen in dogs? Lets look at the first three with size appropriate scaled skeletons: ![]() Again, is the variation more or less than the variation seen in dogs? Let's compare human to Homo habilis and Australopithicus (note skeletons not scaled the same): ![]() ![]() Again, is the variation more or less than the variation seen in dogs? And then we have Ardipiticus ramidus (Ardi), incomplete but we have enough to compare them to those above: ![]() A reconstruction is also available: ![]() Where the known bones are in place and the probable reconstruction is sketched in. Let's put Ardi in a line-up with Humans, Australopithicus and Chimps (note skeletons not scaled the same): ![]() Is the variation in traits seen in the bones between modern humans and Ardi more or less than the variation seen in dogs? Inquiring minds want to know. If the variation between species seen in the fossil record is less than that seen in dogs, then it is logical and reasonable that the younger species can have evolved from the older species, especially if found in close proximity within the spacial-temporal matrix. Enjoy Edited by RAZD, : . Edited by Admin, : Reduce image width. Edited by RAZD, : pic Edited by Admin, : Rerender to make mobile friendly. by our ability to understand Rebel•American•Zen•Deist ... to learn ... to think ... to live ... to laugh ... to share. Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click)
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined: |
As we go further back in time the story of the bones gets more difficult, as many things conspire against finding fossils. Forests are poor hunting grounds due to acidic soils eating the calcium away, small populations in small localized areas make it a needle and haystack enterprise, and sheer age means less ability to find specimens. What we can see however is this timeline for the fossils found to date:
quote: We also saw in Message 1 (bottom) that the pelvic structure for Ardipithicus was intermediate between chimps (Pan troglodytes) and Australopithicus (just as Australopithicus was intermediate between Ardipithicus and modern humans), and in fact one could see chimps would also have ancestors closer to our common ancestor, and that they could be more similar to Ardipithicus. Certainly the variation between Ardipithicus and modern chimps (Pan troglodytes) is less than is seen in modern dog varieties. So it would be possible for Ardipithicus to be a common ancestor with chimps, except that we have a better candidate with quote: Note that the "time of the chimpanzee–human divergence" is based on genetic analysis, and thus subject to a degree of skepticism, but a good ball-park estimate. This is certainly well within the spacial-temporal matrix constraint for evolution to have evolved either or both branches of this part of the hominid tree. Older fossils (Ouranopithecus and Nakalipithecus) are problematic. quote: Those locations make it difficult to fit the spacial-temporal matrix, imho, so it could be an ape, but not in our lineage. quote: So Nakalipithecus is considered too old to be the common ancestor with chimps, while it is in the proper spacial-temporal location to be ancestral to the common ancestor. Based on this evidence, my money is on Sahelanthropus tchadensis (or something very similar) being the common ancestor for chimps and humans. This fits the spacial-temporal matrix and the dog variation parameter for rational and logical conclusions, however the conclusion remains tentative, as new information/evidence can change things. Enjoy Edited by RAZD, : . by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined:
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Says the person whining about not being treated with respect. Curiously all the dog variation is used for, is an example of how much variation is possible within a species, so this rant is complaining about a non-existent part of my argument. Furthermore calling things like this "lies" without substantiating the claim with objective empirical evidence is just indulging in rabid opinion. Sadly opinion has been shown to have an extremely poor record at affecting reality in any way. What all those dog variations show is the power of selection for traits, and how much selection controls what results.
Denial is not an argument, it's just evidence of a person's failure to cope with reality, whether due to cognitive dissonance or willful ignorance or just plain pretentious lying. Sadly, for you, every fossil is a transitional fossil -- the transition from the breeding population that precedes it to the population that follows. Just like you are a transitional individual between your parents and your offspring.
Again, what the diagram in question shows is the age for the fossils, it is not intended as anything else: quote: These ages are facts, the fossils are facts, their locations in Africa are also facts. These facts paint a picture within the spacial-temporal matrix that is the natural history of life on earth, a picture that is explained by the theory of evolution, and as such they are tests for the theory.
No theories are proven, in any field of science. At best they are validated through passing tests, at worst they are invalidated by failing tests. The Theory of Evolution has not yet been invalidated in over 150 years of testing, and it has passed massive numbers of validation tests with flying colors. Enjoy Edited by RAZD, : . by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined: |
You've posted exactly the same thing on four threads (so far anyway), which is spamming and a troll trait.
Which thread do you want the answer on: This one (The story of Bones and Dogs and Humans Message 8) or do you want me to pick? Inquiring minds want to know. Enjoy Update - See A good summary of so called human evolution. Message 131 for reply Edited by RAZD, : . Edited by RAZD, : abe Edited by RAZD, : update by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined: |
actually 4 threads, see Message 228
make that 5 threads, Message 109 Edited by RAZD, : . by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined: |
Which nobody said ...
Which nobody said otherwise ...
Which nobody said otherwise ...
Which nobody said ...
And curiously, nobody said it was. You are debating something you made up, not what anyone actually said. Like Don Quixote jousting with windmills, while everyone laughs. Sad by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined: |
Except that nobody that actually reads what is said about them is deceived. It seems only you have a problem understanding what the graphic is used for -- the extent of variability possible via selection within a species.
Not inbreeding but artificial selection, picking traits to preserve, and cross-breeding to develop new mixtures of existing traits. That inbreeding occurs in order to maintain stasis in a "purebred" population is not an issue for what selection can accomplish because we can see what it has accomplished: the evidence is right there in plain sight. The same can be said for all the breeds of cows, sheep, horses, pigs, cats, etc etc etc.
Not the 'same' (not identical) per se, but not much more different than breeds of dogs differ: can you point to a difference between chimps and humans that is not like a difference between breeds? We ARE apes and we, and all other apes, ARE primates,. Even Linnaeus classified humans as primates. So it remains ...
... to ignore the evidence. Denial of reality is delusion. Enjoy by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined: |
Yes when you throw a single di ... according to Davidjay anway ... you can get any number you want ... because "all things are possible via luck and chance" ...
Which is actually the point of my argument -- that they show extensive variation but are still Canis familiaris (that means dogs, Davidjay, specifically domesticated dogs). Just as all the varieties of domesticated cows are still Bos taurus ... and all the varieties of domesticated sheep are still Ovis aries ... (including the black ones). This amount of variation shows what is possible within a species when selection within reproductively isolated populations causes different traits to survive and reproduce. Put another way these variation in domesticated breeds shows there is no barrier to these traits and changes occurring: they have been observed and documented. So when we see a fossil record such as for Pelycodus: quote: We can see that the changes in body size between layers is well within the parameters of body size variation in dogs, and thus well within the known limits of size change for a species. We can see that there is a trend to larger and larger body size, until at Pelycodus jarrovii all the individuals in the breeding population are larger than all the individuals in the Pelycodus ralstoni breeding population, even though at each stage the changes in body size between layers is well within the parameters of body size variation in dogs, and thus well within the known limits of size change for a species. They are also still Pelycodus ... then at the top we see a divide, where one breeding population selects for smaller size while the other continues to select for larger size ... and yet that size variation in each population is still within the parameters of body size variation in dogs, and thus well within the known limits of size change for a species. Thus we can see in the fossil record that mutation and natural selection accomplish the same (or less) variation than seen with domesticated animals. We can also look an human ancestry in the fossil record the same way, as seen in Message 1: quote: The evident answer for those inquiring minds, is that yes, we see less variation between Ardipiticus ramidus and modern man (Homo sapiens) than we see withing the dog species. The outlier, the one showing the most variation, in the pictures, is actually the Gorilla, with the crest on the skull and the extended neck vertebrae. Enjoy Edited by RAZD, : link Edited by Admin, : Reduce image width. by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined: |
Dogs show the range of variety possible within a species, and using it as such is not intended as "proof" of evolution -- the process of evolution has been observed and documented, it is fact, "proof" is not needed. (1) The process of evolution involves changes in the composition of hereditary traits, and changes to the frequency of their distributions within breeding populations from generation to generation, in response to ecological challenges and opportunities for growth, development, survival and reproductive success in changing or different habitats. This is sometimes called microevolution, however this is the process through which all species evolve and all evolution occurs at the breeding population level. Mutations of hereditary traits have been observed to occur, and thus this aspect of evolution is an observed, known objective fact, rather than an untested hypothesis. Different mixing of existing hereditary traits (ie Mendelian inheritance patterns) have been observed to occur, and thus this aspect of evolution is an observed, known objective fact, rather than an untested hypothesis. Natural selection has been observed to occur, along with the observed alteration in the distribution of hereditary traits within breeding populations, and thus this aspect of evolution is an observed, known objective fact, and not an untested hypothesis Neutral drift has been observed to occur, along with the observed alteration in the distribution of hereditary traits within breeding populations, and thus this aspect of evolution is an observed, known objective fact, and not an untested hypothesis. Thus the many processes of evolution are observed, known objective facts, and not untested hypothesies. Only those desperately denying these facts argue about them.
See absence of reference to inbreeding in the definition above. See absence of any need for approval in the definition above. Repeat after me: the processes of evolution are observed, documented, known facts, and denial of this only leads to delusion.
Stop lying about this Davidjay: you have not done anything close to "proving" that evolution is racist. Repeating assertions to that effect are not proof nor substantiation of you claim. You have a whole thread dedicated to this delusion of yours, and yet even there you fail to address the criticisms of your assertion that show it is a falsehood. Intentionally repeating a falsehood is lying.
Actually that is evolution 101 and rational use of objective empirical facts. This too has been covered. Division of a parent breeding population into two independent daughter populations creates a clade, evolution results in a hierarchy of nested clades, each clade includes the founding population and all descendants of the founding population. Thus dogs will always be dogs, cats will always be cats. If we look at the continued effects of evolution over many generations, the accumulation of changes from generation to generation may become sufficient for individuals to develop combinations of traits that are observably different from the ancestral parent population. (2) The process of lineal change within species is sometimes called phyletic speciation, or anagenesis. This is also sometimes called arbitrary speciation in that the place to draw the line between linearly evolved genealogical populations is subjective, and because the definition of species in general is tentative and sometimes arbitrary. If anagenesis was all that occurred, then all life would be one species, readily sharing DNA via horizontal transfer (asexual) and interbreeding (sexual) and various combinations. This is not the case, however, because there is a second process that results in multiple species and increases the diversity of life. (3) The process of divergent speciation, or cladogenesis, involves the division of a parent population into two or more reproductively isolated daughter populations, which then are free to (micro) evolve independently of each other. The reduction or loss of interbreeding (gene flow, sharing of mutations) between the sub-populations results in different evolutionary responses within the separated sub-populations, each then responds independently to their different ecological challenges and opportunities, and this leads to divergence of hereditary traits between the subpopulations and the frequency of their distributions within the sub-populations. Over generations phyletic change occurs in these populations, the responses to different ecologies accumulate into differences between the hereditary traits available within each of the daughter populations, and when these differences have reached a critical level, such that interbreeding no longer occurs, then the formation of new species is deemed to have occurred. After this has occurred each daughter population microevolves independently of the other/s. These are often called speciation events because the development of species is not arbitrary in this process.
If we looked at each branch linearly, while ignoring the sister population, they would show anagenesis (accumulation of evolutionary changes over many generations), and this shows that the same basic processes of evolution within breeding populations are involved in each branch. An additional observable result of speciation events, however, is a branching of the genealogical history for the species involved, where two or more offspring daughter species are each independently descended from the same common pool of the ancestor parent species. At this point a clade has been formed, consisting of the common ancestor species and all of their descendants. Note how neither daughter population is considered de factobetter or worse than the other or the parent population, just different. Being different is not racist. Enjoy Edited by RAZD, : . Edited by RAZD, : .. by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined:
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NOBODY has claimed that inbreeding is proof of evolution, stop lying. As soon as you define "kind" and show that it accurately represents the diversity of life we see, this question can be investigated. Are you saying that "kind" is "species" and not "genus" or "family"? Then you lose, because evolution shows actual evidence of one species changing over time until the individuals are all different from the older individuals (anagenesis) and it shows one becoming two species (cladogenesis) -- both are shown in abundant detail in the Pelycodus diagram that coyote re-posted. That this happened is FACT. Enjoy by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined: |
Nope. Try again, this time with understanding of what is actually written.
Nope. Try again, this time with understanding of what is actually written.
Nope. Try again, this time with understanding of what is actually written.
Except that the only problem is your misunderstanding (or your intentional misrepresentation).
Attempts at ad hominum attacks only show the person making them has a weak argument that is not supported by facts and so chooses to attack the messenger instead of the message. Sad and pathetic.
Says the person intentionally continuing to misrepresent what was actually written. By the way, you might be interested (probably not) in something called the founder effect: quote: And it can be readily observed in island populations of species ... such as the species on the Galapagos Islands ... Curiously I always enjoy taking the opportunity of creationist ignorance and desperate denial to educate them (or at least those who read the posts that are willing to learn) and to help them understand (if they want to) the evolutionary mechanisms. What we have with dog breeds is not inbreeding per se (some cross-breeding is done to alleviate effects of inbreeding or to develop new breeds), but an artificial selection similar to what occurs naturally with founder effect populations and which does result in evolutionary change in the population. btw -- you seem to equate evolutionary change with speciation, whether through misunderstanding or intentionally (hyperbole exaggeration logical fallacy), when speciation is actually a rather rare occurrence in the general generation to generation changes of the breeding populations. See anagenesis -- all species undergo anagenesis (it is observed, documented, fact) ... even when cladogenesis occurs each daughter population is undergoing anagenesis.
You are either lying or incapable of understanding ... for one of several reasons: see Five types of people that don't understand how evolution works 3, 4 or 5 ... take your pick. Enjoy by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined: |
The purpose of the dogs is to show the variation in phenotypes that can be derived through selection, whether artificial or natural. Natural selection would not (normally) develop all the phenotypes shown by dogs, but logically could have produced any one of them over time. Thus dogs (or cats or cows or sheep or any other domestic breed) give us an idea of the limits of variation within a species while still remaining a species (able to interbreed if given the opportunity). This "limitation boundary" then applies to all aspects of the phenotype ... but when you are applying that metric to a set of skeletons, then yes you should only look at the skeletons of the dogs. I consider that implicit in the argument.
Curiously those statements were done by "an anatomist expert in that field" ... Enjoy by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined:
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Not by itself.
Even if so it would not create a new species of humans that is not human.
Define "KInd" and then we can discuss this issue.
A rather silly and easily falsified claim that you have not demonstrated on your thread for that purpose, nor defended it against the various examples that show otherwise. Repeating a claim that has been shown to be false is intentionally repeating a falsehood. That is lying. Stop lying Davidjay. Only you are seeing this -- or pretending to.
Not by itself.
Except that it shows no such thing. It shows the development of varieties. Any species can (and often does) have a number of varieties, but they are all one species and can still interbreed. In humans we call the various varieties "races" ... and as you know all human races can interbreed. This forms hybrids not new species. Only you have trouble seeing this -- or pretending to.
Your inability, or refusal, or failure to understand what the dogs actually show, and how this relates to actual evolution is not my problem. Enjoy by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined: |
That's a lot of nonsense with nothing of value to reply to. You seem very desperate to nullify the objective empirical evidence and the information it shows. This is typical cognitive dissonance behavior. See Message 1 for more.
Your false beliefs are interfering with your ability to learn, pathetic and sad. Enjoy by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member (Idle past 724 days) Posts: 20714 From: the other end of the sidewalk Joined:
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Your question have been answered, you just reject the answers because your cognitive dissonance is strong. So you resort to attacking the messengers. And you keep coming back for more, because you want to be right, and you can't understand why everyone else rejects your opinions and falsified beliefs and assertions. Enjoy by our ability to understand Rebel☮American☆Zen☯Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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