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jay_a2j wrote:First off put aside any bias that you may have...weather it be religious or anti-religious.
owheelj wrote:Actually people have observed the Earth orbiting the sun. We can also easily observe the positions of all the stars, planets asteroids and other space objects, and the sun and their relative position to us on Earth and extrapolate out a map of what is going on.
But of course way before we could do this there were plenty of phenomenon that can be easily observed and cannot be adequately explained with any hypothesis other than the one that the Earth orbits the sun (such as length and direction of shadows from the sun in different parts of the world over time).
It is, of course, completely illogical to assume that something that has not been observed therefore does not exist, however it would also be foolish to think that something does exist if there is no evidence (direct observation or inference from direct observation) to suggest that it does.
Regarding evolution. Evolution is definitely an observed fact. It's not a theory, it's actually clearly been observed happening over generations. I'm not sure what Klobber considers a reputable source but here is an article I would say is from a reputable source.
http://online.sfsu.edu/~uy/specseminar/ ... osos97.pdf - from the peer reviewed scientific journal Nature. Here is a NY Times article about this article;
http://www.nytimes.com/1997/05/01/us/le ... /Evolution
Essentially lizards of the same species were placed on 14 separate islands and over a 10 - 14 year period were measured and found to change significantly over that time (the populations obviously, not the individuals).
Here is another similar study (from the same scientists) that found similar results but only on one island and in the context of an introduced predator. I can only find the abstract and not a viewable version of the article I'm afraid;
http://www.nature.com/nature/journal/v4 ... 03039.html
Here is a New Scientists article about this article;
http://www.newscientist.com/article/mg1 ... ction.html
There are, of course, countless more examples. The "theory" of evolution is an attempt to explain why the observed phenomenon of life evolves over generations. We *know* for a fact that life evolves - we see it happening constantly. We also *know* basically how it works. There really is no doubt amongst people who actually study it (like me). There is still heaps of stuff we don't know though, especially the specifics of how specific behaviours evolved.
Denying that evolution occurs at all, or claiming that there is any doubt about whether it does, really just indicates that the person making that claim is speaking from ignorance and has spent only a very small amount of time trying to understand evolution and the evidence that supports it. Come back to me after you have a phd. in a field of evolutionary biology and tell me you're unconvinced, or actually present some evidence for your beliefs from a reputable source that suggests evolution doesn't actually occur but can explain how populations of lizards on different islands can vary in characteristics over time.
owheelj wrote:Regarding evolution. Evolution is definitely an observed fact. It's not a theory, it's actually clearly been observed happening over generations. I'm not sure what Klobber considers a reputable source but here is an article I would say is from a reputable source.
captain.crazy wrote:no one has actually observed something evolve right in front of their eyes.
owheelj wrote: Evolution essentially only occurs during meiosis - ie. in the period of time where the DNA from the parents of a life form combines.
owheelj wrote:I've never seen that convention before.
Regarding evolution during the creation of gametes and embryonic development; I am unsure how this could occur. I don't really understand what you mean by "evolution" in this context. Are you saying that a sperm and egg combine creating replicating cells that all have the same DNA but then that DNA changes as the embryo develops? I've never heard of that happening. Likewise are you saying that during the production of sperm, some of my sperm will have different DNA to the rest of me?
PLAYER57832 wrote:owheelj wrote: Evolution essentially only occurs during meiosis - ie. in the period of time where the DNA from the parents of a life form combines.
Evolution can occur during several stages of development, including in the creation of gametes, embryonic development, etc.
Per the "E" versus "e". Usually a capitol letter indicates a proper name, in this case the theory of Evolution. It is broadly simply the change of species over time, but in specifics involves a lot more. It is a convention, but not universal.
That said, however you distinguish, there is a theory of Evolution and there is the fact of evolution, both.
PLAYER57832 wrote:Too many of those who claim they don't believe global warming are really "end-timer" Christians.
jay_a2j wrote:PLAYER57832 wrote:owheelj wrote: Evolution essentially only occurs during meiosis - ie. in the period of time where the DNA from the parents of a life form combines.
Evolution can occur during several stages of development, including in the creation of gametes, embryonic development, etc.
Per the "E" versus "e". Usually a capitol letter indicates a proper name, in this case the theory of Evolution. It is broadly simply the change of species over time, but in specifics involves a lot more. It is a convention, but not universal.
That said, however you distinguish, there is a theory of Evolution and there is the fact of evolution, both.
If evolution was a fact then they would most certainly stop teaching creation. How many people do you know that teach a flat Earth? Hmmm I wonder why they don't? Aaah that's right! They have proof that it is round!
It's one thing to believe in evolution. If you do, good for you. But I can't stand when people say it is a fact. It is not a fact! If it was you could show me proof of it and this conversation would end. But the FACT is, you CAN'T prove evolution any more than I can "prove" God.
jay_a2j wrote:If evolution was a fact then they would most certainly stop teaching creation. How many people do you know that teach a flat Earth? Hmmm I wonder why they don't? Aaah that's right! They have proof that it is round!
It's one thing to believe in evolution. If you do, good for you. But I can't stand when people say it is a fact. It is not a fact! If it was you could show me proof of it and this conversation would end. But the FACT is, you CAN'T prove evolution any more than I can "prove" God.
jay_a2j wrote:
It's one thing to believe in evolution. If you do, good for you. But I can't stand when people say it is a fact. It is not a fact! If it was you could show me proof of it and this conversation would end. But the FACT is, you CAN'T prove evolution any more than I can "prove" God.
owheelj wrote: Go read those Nature articles I posted and tell me another explanation for how scientists could put populations of the same species of lizard on different islands and then over time each population could change in traits such as body length so that after a decade the populations are noticeably different that doesn't involve evolution occurring.
PLAYER57832 wrote:Too many of those who claim they don't believe global warming are really "end-timer" Christians.
jay_a2j wrote:If evolution was a fact then they would most certainly stop teaching creation.
jay_a2j wrote:owheelj wrote: Go read those Nature articles I posted and tell me another explanation for how scientists could put populations of the same species of lizard on different islands and then over time each population could change in traits such as body length so that after a decade the populations are noticeably different that doesn't involve evolution occurring.
Could we stick to one subject? Are we talking evolution or adaptation?
owheelj wrote:I'm not aware that "Evolution" and "evolution" are different things. Certainly as a biology student I don't recall any lecture or text book ever making such a distinction.
Yes things change over time - this is an observed fact. Indeed they change every generation. This is an observed fact. Scaptain.crazy wrote:no one has actually observed something evolve right in front of their eyes.
I'm not sure what you mean. You do understand that single individuals don't evolve right? Evolution essentially only occurs during meiosis - ie. in the period of time where the DNA from the parents of a life form combines. The evolution is the fact that the child never has the exact same DNA as its parents. We've certainly observed this to be the case.
captain.crazy wrote:owheelj wrote:I'm not aware that "Evolution" and "evolution" are different things. Certainly as a biology student I don't recall any lecture or text book ever making such a distinction.
Yes things change over time - this is an observed fact. Indeed they change every generation. This is an observed fact. Scaptain.crazy wrote:no one has actually observed something evolve right in front of their eyes.
I'm not sure what you mean. You do understand that single individuals don't evolve right? Evolution essentially only occurs during meiosis - ie. in the period of time where the DNA from the parents of a life form combines. The evolution is the fact that the child never has the exact same DNA as its parents. We've certainly observed this to be the case.
I know that. KLOBBER's point was that no one has ever observed evolution, therefore it does not exist.
neanderpaul14 wrote:...when scientists began to prove that the Earth is the center of the universe....
owheelj wrote:...the same species of lizard on different islands and then over time each population could change in traits such as body length so that after a decade the populations are noticeably different that doesn't involve evolution occurring.
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