- Joined
- Dec 24, 2014
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Theories aren't "proven". That's really the vernacular your ought to be avoiding. They're demonstrated and supported with evidence. Never conclusively proven.
Speciation (macroevolution) is absolutely observable. Common ancestry is the entire point of the theory and is demonstrated through the fossil record and through genomics, i.e. all organisms on Earth share DNA as our genetic material. Find all the info you want on the site linked above.
The fact that you selectively incorporate scientific fact into your belief structure because of seeming contradictions with your religious beliefs is anti-scientific. I won't judge whether or not that's stupid.
Birds and "dinosaurs" don't share a common ancestor in the sense you're using the term because they are dinosaurs. They are the only extant group of saurischian theropods. Google and read about archaeopteryx.
Thanks for correcting some of my mistakes. I have gotten a little dusty in some of the terms such as fact, theories, and hypotheses I haven't used since last May. Also, I did slip up in my depiction of the dino bird relationship and you are correct that the belief is archaeopteryx was considered as more of a transitional form than a common ancestor. I do agree with common ancestry on a small scale (dogs for example) but not on a large scale. I should clarify what I mean by where I disagree with macro evolution: large scale changes from one type of organism to another such as apes to humans. I agree that speciation, which is the technical definition of macro evolution as evidenced in your link, is a thing. I just disagree about the past origins, which can never be fully proven. DNA does not necessarily prove common ancestry though it does lend good evidence to it. A christian would say God made all organisms and they share basic similar functions so of course they all have DNA. Form fits the function. My point is not to prove creation, but just to show that it is possible to have sound scientific reasoning and still hold different beliefs about our past since we were not there to record it as it happened.
To answer ZPakEffect, I agree with science that has been observed. So the speciation as seen in Drosophila and dogs that we have observed with one species giving rise to another type of species is legitimate. To say that I disagree about what happened in the past is not scientific ignorance. If you take two fossils and examine the structure and even DNA sequences of them and determine they are different species, you have done just that. Determined they are different species. You are certainly free to make an inference that one species gave rise to the other, but because we did not directly observe that transition, we cannot say for sure that is what happened. My reasons for why I believe creation is central to the Christian faith is off topic for this discussion.