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To: betty boop
Do you mind if we turn this question around, so that I might ask you: What part of evolution theory have you directly observed?

Remnants in the fossil record, DNA relics across species previously concluded to be closely related, imperfect replication of organisms in biological populations and reproductive success relative to environmental conditions as a result of heriditable traits leading to increased expression of those traits in future populations have all been observed.
138 posted on 10/30/2006 8:23:18 AM PST by Dimensio (http://angryflower.com/bobsqu.gif <-- required reading before you use your next apostrophe!)
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To: Dimensio; Alamo-Girl; cornelis; YHAOS; hosepipe
Remnants in the fossil record, DNA relics across species previously concluded to be closely related, imperfect replication of organisms in biological populations and reproductive success relative to environmental conditions as a result of heriditable traits leading to increased expression of those traits in future populations have all been observed.

Thank you for your reply, Dimensio. Seems like impressive evidence!

Still, it seems to me that each of the items on your list is open to question, or other interpretation. For instance, the fossil record. I understand it still has "gaps," but people are working to "fill them in" by searching for more fossils, especially from those time periods when the fossil record seems scant (e.g., the pre-Cambrian). But it seems to me that you can pile up all the fossils you want to; but that wouldn't SHOW a transition of one species into an entirely different species. Such a transition would have to be observed before we can say that it really occurred -- at least if we are going to be as "epistemologically rigorous" as Niels Bohr says a scientist must be. Because something seems intuitive enough -- and granted, macroevolution seems "intuitive" -- is not enough to establish scientific rigor.

I'm not aware Bohr directly spoke to macroevolution theory; but then I'm still studying him. (If you know something about any statements he's made on that subject, I'd be grateful if you'd fill me in.) However, based on what I do know so far, he was famous for saying that valid science is all about making descriptions of the natural world, and you can't describe what you haven't actually seen.

But maybe this is what constitutes a difference between physics and biology. Still, they are both branches of science, and both are informed by the scientific method.

As for DNA relics across species, here's a "what if" for you: What if all living species share a single, I almost want to say (but won't) universal common genome as the basic stuff of life? And that there is another, as yet undetected principle at work here (e.g., successful communication of information) that "customizes" the expression of the genome for each individual species? -- undetected because not looked for? It seems that could explain why humans and the higher apes express the genome almost identically; and it could obviate the necessity of saying that apes gave rise to humans.

That's just a conjecture, of course. It's occurred to other people as well. Are Darwinian theorists interested in looking into a proposition like that?

Ditto for the population studies. I don't know what light such truly shed on the problem of one species arising from an entirely different predecessor species. The studies may be perfectly valid for microevolution, yet not necessarily furnish evidence for macroevolution.

But then, I am a very skeptical person!

Thank you for writing, Dimensio!

148 posted on 10/30/2006 9:16:13 AM PST by betty boop (Beautiful are the things we see...Much the most beautiful those we do not comprehend. -- N. Steensen)
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