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Location: UFOUpDatesList.Com > 2007 > Jul > Jul 29

Re: Binary/Convergent Evolution

From: Michael Tarbell <mtarbell.nul>
Date: Sun, 29 Jul 2007 09:52:05 -0600
Archived: Sun, 29 Jul 2007 23:23:24 -0400
Subject: Re: Binary/Convergent Evolution


>From: Stuart Miller <stuart.4.nul>
>To: ufoupdates.nul
>Date: Fri, 27 Jul 2007 21:02:00 +0100
>Subject: Re: Binary/Convergent Evolution

>>From: Michael Tarbell <mtarbell.nul>
>>To: ufoupdates.nul
>>Date: Thu, 26 Jul 2007 11:21:01 -0600
>>Subject: Re: Binary/Convergent Evolution

<snip>

>This may be a 'What came first; chicken or egg' situation but
>the reason why our ancestors became bipedal is because their
>bodies evolved differently to other primates. Walking upright
>simply became a more comfortable means of getting about.

>Whether this happened because of a change in their behviour
>which necessitated an evolutinary shift or whether the change
>occurred and the behaviour adapted, I couldn't say.

>You can find a more detailed explantion here but, unless its of
>personal interest, you'll neeed to set aside the ID element of
>it:

>"If upright walking is so energetically favorable, why do apes
>still 'knuckle-walk'?"

>http://tinyurl.com/2syvzm


Thanks for the link Stuart. While not a creationist sympathizer,
I found this article profoundly circular and unpersuasive. It
ultimately reaches the vacuous conclusion that bipedalism is not
suited for say, chimpanzees, because their bodies are adapted
primarily for quadrapedal knuckle-walking. Well, thanks
professor, that clears it up!

The question is _why_ did our common ancestor diverge into
bipedal and non-bipedal forms? If the wide-open savannah confers
some advantage to bipedal animals, or conversely, selects
against quadrapeds, one might well wonder why we do not see
additional bipedal forms in that environment.

I do not question that some selection mechanism led to our
bipedal form, but simply attributing it to 'adaptation to the
savannah' is not convincing at all.


Mike





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