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Author Topic:   Questioning The Evolutionary Process
Percy
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Posts: 22505
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.4


Message 69 of 160 (432669)
11-07-2007 5:29 PM
Reply to: Message 67 by Elmer
11-07-2007 3:33 PM


Re: plain evolution ...
Elmer writes:
I cannot help but suspect that the the philosophical assumption that has ruled biology ever since Charles Darwin has had a lot to do with it, and since it is still the ruling paradigm today, I can't help but feel that what helped us get into this mess is not going to help us to get out of it. We need a better theory of origins.
And don't forget the evils of atomic energy. We need a better nuclear energy theory, too!
For individuals, "dynamic response" is too general and undescriptive a term. "Selection" much more precisely describes what actually happens, as Darwin illustrated so long ago when he introduced natural selection by first covering in the detail the breeders art of artificial selection.
On the other hand, if you're talking about entire populations instead of individuals then "dynamic response" is more useful. One could say that a population dynamically responds to changes in its environment by changing the distribution of alleles in the collective gene pool. Of course, the dynamic response is due to selection factors, so you still can't escape the term "selection".
--Percy

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 Message 67 by Elmer, posted 11-07-2007 3:33 PM Elmer has not replied

  
Percy
Member
Posts: 22505
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.4


Message 86 of 160 (432791)
11-08-2007 7:48 AM
Reply to: Message 80 by Elmer
11-08-2007 12:21 AM


Re: plain evolution ...
Hi Elmer,
You're drawing enough responses, I'll be brief.
Elmer writes:
What "bald assertion" would that be? I said that if 'selection', 'natural selection', and other terms lack empirical substance that they are meaningless, scientifically speaking. That isn't a "bald assertion". That's just a plain fact. There is a very important difference. Assertions of opinion require support; statements of fact do not.
I suppose you could say that assertions with a broad degree of support could be considered statements of fact, but declaring assertions to be facts just doesn't do the job. If terms like "selection" and "natural selection" lacked empirical support, that would not make them meaningless, it would just make them unsupported by evidence. But we don't have to worry about that because they have broad and deep observational and experimental empirical support, as reflected in the technical literature. Breeders knew about selection long before Darwin came along.
--Percy

This message is a reply to:
 Message 80 by Elmer, posted 11-08-2007 12:21 AM Elmer has not replied

  
Percy
Member
Posts: 22505
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.4


Message 115 of 160 (432947)
11-09-2007 8:28 AM
Reply to: Message 114 by Elmer
11-09-2007 8:11 AM


Re: plain evolution ...
Elmer writes:
The other darwinian participants in this thread all seem to be having 'bad hair days', and I'm not about to respond to posts that are nothing more than adolescent, 'in your face', attitude. But so far you are still acting like a well-mannered adult, so I'll try one more post.
EvC Forum is moderated. If you have are having a problem then it is suggested that you post to the General Discussion Of Moderation Procedures 13.0 thread rather than taking problems into your own hands. Simply ignoring responses has a tendency to cause people to just up the volume.
EvC Forum also has a set of Forum Guidelines, and referring to other thread participants as adolescent and ill-mannered and so forth is discouraged by rule 10, which attempts to encourage civility in discussion. Again, you should take any moderation issues to the moderation thread linked to above.
--Percy

This message is a reply to:
 Message 114 by Elmer, posted 11-09-2007 8:11 AM Elmer has not replied

  
Percy
Member
Posts: 22505
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.4


Message 129 of 160 (433096)
11-09-2007 10:39 PM
Reply to: Message 124 by Elmer
11-09-2007 8:27 PM


Re: plain evolution ...
Elmer writes:
As for my personal hypothesis wrt evolution's driving force, it is "idiosyncratic" in the sense that it certainly deviates from the prevailing darwinian understanding, but it is not peculiar to myself alone. It daily acquires greater credence among those who treat organisms as whole systems, including developmental biologists.
By this I take it you mean that the view you're espousing is not uniquely your own, but is one that is gaining acceptance within science. If I understand you correctly, how do you arrive at this conclusion?
About abstractions, it isn't your definition of abstraction that is in question, but your claim that anything that is an abstraction can be dismissed simply because it is an abstraction. 49.26% of the American population are males. If you want to call it an abstraction, go ahead, but you can't dismiss it simply because it's an abstraction. You can challenge the data gathering techniques and the analysis and all that sort of stuff, but you can't say something silly like, "I don't believe 49.26% of the population are males because it's just an abstraction."
So call fitness an abstraction if you like, but the concept is strongly rooted in reality and has great relevance for biology. You'll have to challenge the concept of fitness on the merits, not just call it "an arithmetical abstraction from the non-empirical world of mathematics" (quote is from your Message 80).
I don't know if anyone has offered the Wikipedia definition of fitness yet, but the opening paragraph is, I think, a more clear statement than I've seen so far in this thread:
Wikipedia writes:
Fitness (often denoted w in population genetics models) is a central concept in evolutionary theory. It describes the capability of an individual of certain genotype to reproduce, and usually is equal to the proportion of the individual's genes in all the genes of the next generation. If differences in individual genotypes affect fitness, then the frequencies of the genotypes will change over generations; the genotypes with higher fitness become more common. This process is called natural selection.
--Percy

This message is a reply to:
 Message 124 by Elmer, posted 11-09-2007 8:27 PM Elmer has not replied

Replies to this message:
 Message 131 by molbiogirl, posted 11-09-2007 10:52 PM Percy has not replied

  
Percy
Member
Posts: 22505
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.4


Message 151 of 160 (433497)
11-12-2007 9:43 AM
Reply to: Message 149 by Elmer
11-11-2007 10:00 PM


Re: response part 1 reply 1 & 2 response
Elmer writes:
quote:
Simply because the topic is biological evolution of living organisms, so it would be irrelevant to talk about rocks but not irrelevant to only talk about "that part of nature that is alive" ... and the evidence of past life (fossils, genetics, history, etc).
That's fine. Let's not talk about genes and other chemical molecules either, then, since in this sense they are no different from rocks.
Interesting. So in a discussion about transportation you would rule out mention of transmissions, engines and headlights?
You do not utterly change a word meaning by putting a modifier in front of it--you only qualify it.
Word meanings are not fixed, they change over time. I would question your etymology for the word "selection", but whether you're right or wrong, today the word "selection" has a very clear meaning within biology. If you want to debate past heists of word meanings you should go to another site, this one is for discussing creation/evolution. Even if you were correct about the original meaning of "selection" and Darwin committed the crime of the century in co-opting it for his own use, it is now a fait accompli, and the current definition of selection in biology is just something you'll have to accept.
quote:
In modern biology
By which I take you to mean, 'darwinism'.
Darwinism is not synonymous with modern biology. It is isn't even synonymous with the modern theory of evolution, more properly known as the modern synthesis because it combined (synthesized) Darwin's theory with genetics.
quote:
This is the terminology used by scientists in discussing the science. Not using this terminology means you are not talking about the science but something else, and in logic this is known as the logical fallacy of equivocation.
Actually you are using the old, 'fifty million frenchmen can't be wrong' fallacy. The belief that truth is a function of popularity. I am discussing the reality, the truth of evolution, which is not necessarily what darwinists think it is. There is no acceptable reason to accept the lingo that they have devised to support their dubious notion.
Whether you accept the terminology of modern biology or not, in order to understand what we're saying and what biology books and websites are saying you have to use the proper definitions of that terminology. You can't take a sentence out of a biology book and interpret it using different definitions than the author originally used to compose the sentence, because obviously the result will be nonsense.
What Darwin said in his analogy entailed, (as analogies must if they are to be the least bit accurate), the chief aspects of the subject of that analogy, in his case, 'artificial selection', meaning human selection; meaning intelligent, aware, intentional choice-making according to a pre-set and universally applied criterion. That is what 'selection', as an act, entails. Therefore, if his analogy was valid, his "NS" had to possess these same characteristics.
You've misunderstood the analogy, in fact, misunderstood analogies in general. An analogy is employed to illustrate unfamiliar principles using a familiar example that in some way shares some of those principles. So you would say to someone who never saw a pedal car, "A pedal car is like a real car, only instead of an engine you have to pedal it yourself."
So in Darwin's analogy he was saying, "Natural selection is like the artificial selection of breeders, only instead of the breeder making reproductive decisions, the environment influences those choices."
--Percy
Edited by Percy, : Minor grammar fix.

This message is a reply to:
 Message 149 by Elmer, posted 11-11-2007 10:00 PM Elmer has not replied

  
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