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08-02-12, 11:02 AM #101
Jan Ardena:
No. As I explained to you in my previous posts, I have helpfully linked you to an example of evolution that is amply verified by evidence. There is no assumption in "gigantic changes do occur", because there is evidence that gigantic changes have occurred. I gave you some. That you choose to ignore the evidence that is presented to you doesn't put you in a particularly good light.You still haven't answered my question James.
What you've presented are assumptions, with a fixed premise, namely "gigantic changes DO occurr".
Science is a process of inference from evidence. Direct observation is seldom a requirement. Nobody can ever hope to directly observe an electron, for example. Would you like to argue that therefore electrons remain theoretical at best? What about a statement like "Carbon dioxide in the atmosphere causes global warming"? Can we see carbon dioxide? Can we directly see that warming happening? Is this statement "theoretical at best", then?There's no way you could have observed the said transformation, so it remains theoretical at best.
According to your argument, every theory in science is theoretical at best. Gravity can never be observed, so it is theoretical at best.
And what of Napoleon? Nobody alive today can ever observe Napoleon, or has ever observed him. So, is Napoleon Bonaparte theoretical at best?
Are you starting to see the flaw in your argument here? It's a biggy.
I already showed you a very nice cladogram of whale evolution which summarises the observations nicely.What I want from you is something that compliments the assertion "we have observed....".
No talk, just show. Or explain why you can't show.
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08-02-12, 11:31 AM #102
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08-02-12, 11:53 AM #103
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08-02-12, 12:06 PM #104
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08-02-12, 12:08 PM #105
James R,
So what you're saying is that it's never, ever, been observed.Science is a process of inference from evidence. Direct observation is seldom a requirement.
Why can't you just admit it?
jan.
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08-02-12, 12:13 PM #106
It's been observed in the fossils. Of course evolution works by gradual change. No one is going to see the type of physical changes you require for proof in one lifetime, or even in a thousand lifetimes. But many of these processes have been captured as fossils. We can observe evolution happen in nature that is the same process. Have you ever seen your fingernails grow? No, you only infer they grow because sometimes you notice they are longer than they used to be.
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08-02-12, 12:13 PM #107
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08-02-12, 12:19 PM #108
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08-02-12, 12:19 PM #109
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08-02-12, 12:21 PM #110
If you include observing the fossil evidence, then yes they have observed samples from every era, from pond scum to mankind. If you limit your notion of observation to living creatures, then it's unreasonable to demand observation of something that took 4 billion years to happen.
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08-02-12, 12:25 PM #111
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08-02-12, 12:34 PM #112
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08-02-12, 12:40 PM #113
Sure.
http://www.indiana.edu/~lynchlab/PDF/Lynch100.pdf
http://nd.edu/~mpfrende/PDFs/Simon_e...Hered_2011.pdf
Major changes in Daphnia life-history in organisms genetically predisposed to major changes via environment. Environment changes permanently, followed by silencing of the mutations that cause the susceptibility, radically different organism. Think about how little a difference is actually required to make a species; squirrels, canids and cats don't look too different within each group but don't interbreed at all, or operate with behavioural barriers to that interbreeding. Here's another good paper on rapidly evolving lizards:
http://news.nationalgeographic.com/n...evolution.html
Pretty major dietary shift there.
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08-02-12, 12:44 PM #114
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08-02-12, 12:45 PM #115
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08-02-12, 12:47 PM #116
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08-02-12, 12:48 PM #117
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08-02-12, 12:56 PM #118
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08-02-12, 01:27 PM #119
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08-02-12, 01:53 PM #120
He's self published for one thing, no peer reviewed journals to burst his bubble of creationist nonsense. He fails to acknowledge modern dating techniques and the failures of past researchers. There are numerous sites that debunk this crazy book.
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