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I have to differ with you here. Take for example the question of whether we interbred with Neanderthals, without the discovery of the Neanderthal genome this issue could never have been resolved. There is absolutely no way to tell the difference between change due to mutation in a single species vs change due to additional genetic input.There is no a priori assumption of universal common descent.
Universal common descent is:
1) an inevitable logical conclusion from the theory of evolution, and
2) a conclusion justified by the evidence.
"Lead me not into temptation..." How is that not guidance by the Lord? You do not seek the Lord's guidance? That explains a lot about your very self-centered view of God. Your argument is really all about you needing to feel 100% correct and not about God at all.God is no where described as the Guider, God is worshiped and praised for being the Creator.
"Lead me not into temptation..." How is that not guidance by the Lord? You do not seek the Lord's guidance? That explains a lot about your very self-centered view of God. Your argument is really all about you needing to feel 100% correct and not about God at all.
I have to differ with you here. Take for example the question of whether we interbred with Neanderthals, without the discovery of the Neanderthal genome this issue could never have been resolved. There is absolutely no way to tell the difference between change due to mutation in a single species vs change due to additional genetic input.
My grandfather was adjutant (head of office staff) for Gen. Lamay, AF Chief of Staff from Roswell to the Cuban missile crisis, and he let it slip a number of times that he knew UFO's are real, leading up to a deathbed confession.
Science has absolutely no means what-so-ever of making any determination of any kind about the possibility of other unexpected genetic sources.
Universal common descent is based on the fundamentally flawed assumption that we are the only life in the universe.
That really doesn't change anything. Horizontal gene transfer, which is how we got DNA from viruses in our genome, doesn't put viruses among our ancestors or impact on common descent. So even if, at some time or another, extra-terrestrial DNA was introduced into humans, it would be the same sort of situation.
btw, the ordinary meaning of common descent only applies to this planet, not to the universe as a whole. If life has originated on other planets, those life forms would have their own tree of common descent for each planet.
I couldn't agree more about UFO theories but viruses in the human genome would be devastating, disastrous and fatally deleterious.
That's simply not true, Darwinian logic applies to all life in the universe, whether it's been discovered or not.
Just what do you think endogenous retroviral insertions are?
We have about 100,000 viral remnants in our DNA constituting about 8% of the human genome. And some of them have actually played an important role in making us what we are.
Mammals Made By Viruses : The Loom
Logic sure. But logic is not history. Logic tells us that any life that originated on another planet would evolve just as life here evolves. The same principles of evolution would apply to it.
But logic doesn't tell us that life on another planet would share a common ancestor with life on this planet. Each life-bearing planet could have its own independent origin of life with no connection to life on a different planet.
How life originated on another planet (independently or imported) is a matter of historical contingency, not logic. Only if it was imported would it share ancestry with life on the planet of origin.
Exactly how many germline invasions by retroviruses have been documented in our time? Show me a single example of an ERV being introduced to a living human system and we might have something to talk about.
Your philosophy of history may not require logic, but the theology of redemption history, and the epistemology of natural history as science demand it. Darwinian logic applies to all life, even life on other planets, even if it's undiscovered.
Not according to MIT professor of biology Robert Weinberg:
It's clear, for example, that to the extent that Darwinian Evolution governs the development of life forms on this planet that is not an artifact of the Earth. Darwinian Evolution is a logic which is applicable to all life forms and all biosystems that may exist in the universe, even the ones we have not discovered.
Fundamentals of Biology
Have a nice day
Mark
You could probably find out with a google search what recent ERV's are known. But remember, it's not an ERV until it has been inherited, so you can't take just any retroviral insertion in any living being as an example. By definition, an ERV is a retroviral insertion into a germline cell which becomes an egg or sperm which is involved in a reproductive event. That means there are three hurdles to pass between any old retroviral insertion and an ERV.
My philosophy of history is quite irrelevant as I was not discussing any philosophy but the contingencies of actual history. Darwinian logic plays out in the contingencies of actual history, but it doesn't determine what those contingencies are. That is why you cannot deduce from logic alone what the historical pathways of evolution were or will be.
I agree entirely with Weinberg. But that doesn't tell us that life originates on other planets in such a way as to require interplanetary common ancestors. It doesn't even tell us that there may not be a planet in which the various forms of life do not have a single common ancestor, but are divided among several unshared ancestors. These scenarios would also be consistent with Darwinian logic.
Of course I've researched it and I have yet to see a single case reported in any of the scientific literature available from a Google search. The question remains, has medical science ever documented a single ERV insertion into a human germline in our time?
Your philosophy most certainly is relevant
Evolution most certainly follows stepwise logic whether in theory or as phenomenon. That is the whole rational basis for it as science in the first place.
In other words Darwinian presuppositions transcend all life regardless of actual historical pathways.
So what? The question is diversionary anyway, as it doesn't remove any of the 100,000 viral remnants currently in the human genome.
It would be if the focus of the discussion was philosophy.
The focus was history, not philosophy, so philosophy is not relevant.
Again, this was merely a diversionary tactic on your part to evade the factual evidence provided.
You seem to think I am disputing this, though I have clarified twice that I am not. Comprehension problem or more evasion?
No presuppositions needed as all the conditions required for evolutionary change have been observed and tested. You are getting far afield from the original issue you addressed: does evolutionary logic require that life originate only once in the whole universe or could it originate independently on different planets?
My position is that life could originate independently on different planets, but on every planet where life originated, it would evolve as it does on this one. So on each planet there would be common ancestry for that planet, but not interplanetary common ancestry. Why do you think that unreasonable?
viruses in the human genome would be devastating, disastrous and fatally deleterious.
You never did get the most basic problem with this, the deleterious effect of mutations.
Natural science is a philosophy, it's actually epistemology (theories of knowledge).
Ask yourself a fundamental question, what is the difference between an ERV and a protein coding gene or a psuedo gene.
What do you mean by that? An indel is either an insertion or deletion of one or more contiguous base pairs in a DNA molecule. If, when comparing two similar genomes, it is found that a section of DNA occurring in one, does not occur in the other, and it is not clear whether bases were added to one genome or deleted from the other, the discrepancy is called an indel (from "insertion or deletion")I could never get you to understand what an indel is
I am quite well aware of the deleterious effects of some mutations on those who carry them. I am especially aware that one of the common effects is to prevent that individual from being successful at mating and/or reproduction. What you have never understood is that this effect keeps deleterious effects in individuals from becoming problematical for a species.or why the deleterious effects of mutations were,
Because it's never been directly observed or empirically demonstrated, it doesn't need to because it's an a priori (without prior) assumption. The Modern Synthesis is a unified theory, which makes it transcendent (ubiquitous to all life), which makes it metaphysics not natural science.
On the contrary, you never got that the deleterious effect of a few mutations is not problematical to a species--though I grant that it is very problematical to the individual affected by one.
mark wrote:
Really, mark? Why should anyone take your claim seriously? Would you care to provide support for that?
Your claim here is especially striking since ERV's have been fully explained to you, multiple times, by experts (including Christian experts), such as here:
http://www.christianforums.com/t7799122-19/
Evolution, Creationism, Intelligent Design-Gallup Poll
The culture wars are over and it looks the whole evolution/creation controversy is fading away. Creationism is going up, atheistic materialism is remaining static and it appears Theistic Evolution is on the decline.
Thanks for posting this, mark, it's interesting.
I think that some conclusions are warranted, but some others may not be.
For instance - I don't think one could say that (YE) creationism is going up long term. That last data point is no higher than several points farther back, and is only 2% higher than the first point.
I do think that one could say that TE is going down (with the caveat below), because that last point, at 32, is lower than it has ever been, over 11 separate polls.
As much as I'd like to say so, I don't think we can say that atheistic materialism is holding steady. ....
If Papias is still around I thought he might find this of interest:
Do You Believe the Theory of Evolution
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