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Given the general nature of your question, any proper answer would be a long post... I have stuff to do now, but hopefully I'll have time later on. I'll be sure to come back in the next few days if the thread is still empty. PM me if I don'tHey guys, I've been wondering recently if there actually is any evidence for evolution, since I used to think that it may be true or there are some reasons for believing this theory, but now I'm not so sure.
What I would like to know is, what are the main points for believing in evolution, and what are the main points against it. Mainly on how each side explains transition fossils.
It would be good if it were just short points and explaination of the evidence, not like a massive essay that is a page long on each subject, and also to have points of theists, agnostics, and atheists.
Thanks,
Solarwave
Ok, seems no one wants to take this up, so I'll try to bullet point some of the absolutely astronomical amount of evidence in favour of evolution. I can't promise to give transitional fossils more space than anything else. However, if you have specific questions about transitional forms I will try my best to answer them.Hey guys, I've been wondering recently if there actually is any evidence for evolution, since I used to think that it may be true or there are some reasons for believing this theory, but now I'm not so sure.
What I would like to know is, what are the main points for believing in evolution, and what are the main points against it. Mainly on how each side explains transition fossils.
It would be good if it were just short points and explaination of the evidence, not like a massive essay that is a page long on each subject, and also to have points of theists, agnostics, and atheists.
Thanks,
Solarwave
The cambrian explosion doubtlessly was a special event, but it is quite well understood.Thanks both of you for the response. Interesting to know.
Ok, so evolution has to take a very long time for any big change in species. How would you explain the ''Cambrian explosion''? Just incase you havn't heard of this, it is in or at the begining of the Cambrian period when then is a ''sudden appearence of most of the major animal phyla that are still alive today, and some which are now extinct.''
Exactly.The cambrian explosion doubtlessly was a special event, but it is quite well understood.
First off, it was not a sudden appearance of all those phyla "overnight". Even the shortest estimate for its duration is four million years, and it goes up to 40 million years and more.
*Nods*The actual appearance of the phyla is not mysterious either. During the cambrian explosion hard body parts first evolved, such as shells. This resulted in a massive increase in fossilization rates, which in return results in many phyla making their first known appearance during this period.
Hail arms races!And of course, many phyla are defined based on these hard body parts, so their emergence also marks the emergence of these new phyla.
Of course, there is a legitimate question: "Why did so many species evolve hard body parts at the same time?"
Evolution answers this as well though:
If your prey slowly develops hard shells, then you need something to crack that shell. So those predator species which developed hard tools to crack shells (teeth, claws, scissors) had access to a wider range of prey species and thus had an selective advantage.
The progress of evolution overall sped up during this time due to the increase of selective pressure based on such "innovations".
ThanksI, for one, thought you already did a good job.
I'll be honest, I don't check this sub-forum of crevo much.Thanks
Note, though, that I didn't do any kind of job until a couple of days after solarwave posted the thread... I find it strange that in that interval only one person took the effort to reply and that one person was a newbie.
Hey guys, I've been wondering recently if there actually is any evidence for evolution, since I used to think that it may be true or there are some reasons for believing this theory, but now I'm not so sure.
What I would like to know is, what are the main points for believing in evolution, and what are the main points against it. Mainly on how each side explains transition fossils.
It would be good if it were just short points and explaination of the evidence, not like a massive essay that is a page long on each subject, and also to have points of theists, agnostics, and atheists.
Thanks,
Solarwave
Thanks, huggybear. Now if you supported any of those points that would help all of us a lot. In the meantime:hi, here il put it a little simpler for you ,basically evolution is proven to the point of speciation, that life changes dramatically over time, it is a undeniable fact that all cats alive today are descended from the same ancestor, and the same for dogs, that donkeys,zebras,horses are related,
there is some reason to believe that this process may go further, even to the evolution of genuses unto other genuses, but whatever anybody tells you it has not been proven beyond a reasonable doubt that this has occurred though there is some reason to believe it, transitional fossils are not necesarily what they seem, much bias and presupposition is used in this field, where whole creatures are supposedly reconstructed from a single bone fragment, which is ridiculous!!!
there is no way we can know for sure what happenned so long ago, in closing i will stress that whenever you hear someone say that natural selection totally accounts for all the amazing mindblowing complexity of nature, do not believe it, because they dont even understand themselves how this could be, but they say it anyway, science cannot answer these questions , NS accounts for some things but saying that every structure and design in nature is the result of survival and NS is rubbish,
have a nice day
No, the most important transitional fossils are generally well-preserved and relatively complete things. That's why they are of great help in reconstructing transitions. A few vertebrate examples:transitional fossils are not necesarily what they seem, much bias and presupposition is used in this field, where whole creatures are supposedly reconstructed from a single bone fragment, which is ridiculous!!!
But we can know it with reasonable confidence. Science never aims to know anything "for sure" anyway. It only aims to find the best explanation it can - do you know of a better one than evolution? And no, goddidit doesn't count as an explanation.there is no way we can know for sure what happenned so long ago,
Indeed. Genetic drift is also at work, for examplein closing i will stress that whenever you hear someone say that natural selection totally accounts for all the amazing mindblowing complexity of nature, do not believe it,
Who doesn't understand it? I take it you don't, but that's no reason to believe the experts in the field don't either. Some support for this claim of yours would do a lot to save your reputation.because they dont even understand themselves how this could be,
Exactly how familiar are you with evolutionary biology? And science, to say it just can't answer this or that?but they say it anyway, science cannot answer these questions ,
Why is it rubbish?NS accounts for some things but saying that every structure and design in nature is the result of survival and NS is rubbish,
Thanks, huggybear. Now if you supported any of those points that would help all of us a lot. In the meantime:
No, the most important transitional fossils are generally well-preserved and relatively complete things. That's why they are of great help in reconstructing transitions. A few vertebrate examples:
- From the fish-tetrapod transition (Devonian Times pages; the figure on top of each page shows what's known of the animal): Panderichthys, Tiktaalik, Acanthostega, Tulerpeton (if we go by the diagram on DT, Tulerpeton is quite incomplete, but the preserved bits luckily include the limbs - which are among the most interesting body parts in this particular case). And, as it's abundantly clear just from that section of Devonian Times, there are many more related but more fragmentary fossils that consist of parts very similar to some of the more complete creatures.
- From the "reptile"-mammal transition: the image on this site pretty much says it all, but a plethora of other synapsids also line up neatly with the transition (and not only in the skull). A few others where good quality fossils are known could include Dimetrodon, Lycaenops, Cynognathus, Dvinia, Megazostrodon, ... these are just a few I could think of in a few minutes. And I'm not a palaeontologist, much less a synapsid specialist. Remains from each of these genera include at least a good skull, but AFAIK at least Dimetrodon, Lycaenops and Megazostrodon are pretty much complete.
- One sirenian, because when I first saw the picture a while ago I was amazed just how complete and how beautifully intermediate the creature was: Pezosiren, less than halfway to manatee. I otherwise know next to nothing about sirenian evolution, so there may be more.
- Whales: Pakicetus, Ambulocetus, Rodhocetus, Dorudon... could probably list a few more if I weren't too lazy to bother.
So much for fragmentary remains and wild speculation.
But we can know it with reasonable confidence. Science never aims to know anything "for sure" anyway. It only aims to find the best explanation it can - do you know of a better one than evolution? And no, goddidit doesn't count as an explanation.
Indeed. Genetic drift is also at work, for exampleWho doesn't understand it? I take it you don't, but that's no reason to believe the experts in the field don't either. Some support for this claim of yours would do a lot to save your reputation. Exactly how familiar are you with evolutionary biology? And science, to say it just can't answer this or that?
Anyway, as for mindblowing complexity, I suggest you read a not-so-old CF post. It's about an experiment with digital organisms subjected to various selective pressures - and evolving complex functions in no time at all. Repeatably. Sometimes through highly detrimental mutations. You see, there's more to evolution than simple "survival of the fittest". Why is it rubbish?
(I can immediately come up with a couple of things: as mentioned above, NS isn't the only force of evolution; and many structures have nothing to do with survival but everything to do with reproductive success... but I doubt you had this kind of thing in mind. It appears the problem isn't with evolution but your understanding of it - or the lack thereof.)
A nice day to you too
Thanks, huggybear. Now if you supported any of those points that would help all of us a lot. In the meantime:
transitional fossils are not necesarily what they seem, much bias and presupposition is used in this field, where whole creatures are supposedly reconstructed from a single bone fragment, which is ridiculous!!!No, the most important transitional fossils are generally well-preserved and relatively complete things.
much bias and presupposition is used in this field, where whole creatures are supposedly reconstructed from a single bone fragment, which is ridiculous!!!
:A few vertebrate examples
the image on this site pretty much says it all
Science never aims to know anything "for sure" anyway. It only aims to find the best explanation it can - do you know of a better one than evolution? And no, goddidit doesn't count as an explanation.
Who doesn't understand it? I take it you don't, but that's no reason to believe the experts in the field don't either. Some support for this claim of yours would do a lot to save your reputation.
many structures have nothing to do with survival but everything to do with reproductive success... but I doubt you had this kind of thing in mind.
Then what was your point? The fact that some claimed transitionals are fragmentary and some reconstructions are speculative in no way invalidates the rich collections of transitional fossils we do have.please note that i did not say that there are no complete claimed transition fossils, i just said that
one example , i might have found plenty more with the time http://www.apologeticspress.org/articles/2060
I might understand if you told me why they are not "proven" (which science doesn't do) and how they are "heavily interpreted into" the theory. But I know for certain that one of them is the perfect example of a confirmed prediction. The kind of support every scientist would like to see for their theory.you do understand that all these examples you have shown and more have not been proven and are heavily interpreted into the theory ? dont you ?,
I understand that whole groups of fossil creatures, some of them more similar to group A and some of them more similar to group B, with clear A ---> B trends in similarity over time, are evidence for the theory of evolution. I also understand that transitionals aren't accepted as such just because some people want them to be so.you dont seem to understand that just because someone says "well weve got this theory and we need this to say that, and that to say this ,so lets say that this is a transition and that is a transition , actually makes it true, do you ?
I can easily admit that. However, it's not a case of "a few features are similar". There is a trend in the similarities. A very systematic one. In the picture I linked to, the oldest creatures are at the bottom and the youngest ones at the top - and this isn't only true of the particular species or genera but the whole groups they belong to. Sphenacodonts precede the more mammal-like gorgonopsians, who in turn precede the even more mammal-like therocephalians and cynodonts. The earliest cynodonts are also the least similar to mammals. Show me a better explanation than these synapsids gradually evolving into mammals - until then, I'm staying with Darwin, thanks.pretty much says it all hey? hardly,just because a few features are similar does not prove what your trying to prove, please at least admit that,
Exactly how much experience do you have with science? No, it is not easy to build any theory that explains the available evidence. There are rather a lot of facts theories have to fit (in the case of evolution, anything from snakes' vestigial hindlimbs to the prevalence of males in freshwater snails to the distribution of endogenous retroviruses in primates to the entire fossil record.) And they'd better be consistent with themselves as well.most of this field of research is heavily loaded with bias ,surely you can see that anyone could find evidence like this to build any thoery that one wanted to build, the evidence does not speak for itself, you are speaking for it, which is not proof
Nah, nah, another very dramatic and totally unsupported claim.there is the root of all that is wrong in the world today,
Because it doesn't. Goddidit, in terms of usefulness, is equivalent to "it just is that way": since God supposedly isn't bound by laws of nature (or laws of any kind), there is no reason other than his whims he would make something this way rather than that. Therefore there is no way "goddidit" can be used to explain or predict things about the world.how can you say that godditit does not count as an explanation??????
No, it doesn't. "We don't know" is at least honest and definitely true.you know what ,godditit makes a whole lot more sense than " well we dont know"
When have I said that? God may well have done it, I don't know and I don't think I can know. But it isn't an explanation.until you come up with a better explanation how can you say that god does not even rate a mention ?
It's incredibly humble of you to act like an insider to my ideas. However, you are right in a sense: since I'm neither organic chemist nor physicist, any idea I have of these things is informal at best. But you are dreadfully wrong in another. Thanks to the scientists who are the things I'm not, I do have some informal idea of how life may have come from non-living chemicals (see for example nucleobases in meteorites, amino acids in the primordial soup, RNA polymerisation on clay, ribozymes, RNA world on ice... see, it's a monstrous big puzzle but we are far from clueless). It's admittedly very incomplete, but it's an idea. As for matter, "nothing" doesn't even exist if quantum mechanics is anywhere near right. And particles can pop out of "nothing" as far as I'm aware (but I'll leave that to the physicists).you yourself have no idea how life can come from non life, or matter from nothing,
Which loaded misconceptions? I'd be grateful if you debated with facts rather than empty vagueries.so until you do please dont throw around your loaded misconceptions about what might be true or untrue anymore
No, it doesn't make perfect sense if you dig deeper than the surface. Something with all these attributes is also incalculably complex. So where does that come from? And if it doesn't come from anything, what is the logical reason that allows this for a god but not for a universe?sure it would be a very depressive thing to be true, but it makes perfect sense, an omnipotent existant force that has created our reality and the incalculable complexity of the human being and life,
I'm fairly intelligent. You can expect me to understand most things if explained adequately. So go ahead and tell me how evolution fails to "answer countless systems, structures and things" (for a starter, you could mention a few examples).you dont understand it, either do the scientists, my reputation does not need saving, because it is true that NS and evolution fail to answer countless systems , structures and things in the universe and earth without god, but i would not expect you to understand that,
Do you really not understand the difference between survival and reproductive success? And exactly what claim have I justified? (I distinctly remember I mentioned genetic drift, which can, for example, preserve newly duplicated genes, which then may evolve new functions. So there is at least one mechanism that isn't natural selection but contributes to the complexity of life)do you see what you have just said? what is the difference between the two? thus my claim is justified
Do I? Where have I said that?you think it funny that someone may believe in creation ex nihilo with god,
Again, where have I said that? I'd be grateful if you didn't presume to know what I believe better than I do.without realising that you yourself believe in creation ex nihilo only that you say that that in the beginning there was nothing and that nothing turned into everything,
Again, totally irrelevant to evolution. I suggest you go to the physicists if you want an explanation. As I've said, I'm in another trade.without ever beginning to explain how that might be possible,
Since you've demonstrated you don't actually know what I believe this claim is not only empty but completely baseless as well. If you perhaps cared to show how my (real) beliefs defy all logic?what you believe totally defies all logic,
Apparently better than some on this board.kapish?
I find it a perfectly acceptable belief (and I know many people hold it) that God created the universe with certain laws. However, I don't think I've ever seen anyone say that he is bound by those laws (as in he can't do something because this or that law of physics prohibits it). Anyone who believes in miracles (and/or omnipotence) believes God isn't bound by the laws of nature."since God supposedly isn't bound by laws of nature (or laws of any kind)"
This isn't accurate. I know of no-one who holds the position that God isn't bound by any physical laws at all. If God created the universe and all in it, he would have done so within the constraints of the laws of physics. He would simply understand them better than we do.
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