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b-hebrew - Re: [b-hebrew] Language Evolution

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  • From: Peter Kirk <peterkirk AT qaya.org>
  • To: "Read, James C" <K0434995 AT kingston.ac.uk>
  • Cc: b-hebrew AT lists.ibiblio.org
  • Subject: Re: [b-hebrew] Language Evolution
  • Date: Wed, 21 Sep 2005 17:57:14 +0100

On 21/09/2005 16:35, Read, James C wrote:

...
Africa as a basin of life seems credible, although i would disagree with the date.
I come from a highly scientific background (especially chemistry) and remain
unimpressed by many dating methods which are dependent on variables which we cannot
claim to have enough knowledge about (e.g. carbon dating is directly proportional
to the amounts of radiation the substance has been exposed to. as we cannot know
for sure that past exposure was consistent with present exposure we cannot rely
completely on such methods).


Just to clarify, the datings I mention do not depend on radiocarbon, which is anyway accepted to be useless before about 40,000 years ago - although the tie-up to the 'Ubaid period probably does so. Some of the estimated dates are based on genetic estimates which everyone accepts are highly approximate. But others are based on much more reliable techniques such as the counting of layers in the ice in Greenland, which allows very specific dating of climatic changes and anomalies. Some of the ages are based on a uranium-thorium method. So we have several independent methods pointing to approximately the same dates. Anyway, my point is not so much in the precise dating as in the general picture.

--
Peter Kirk
peter AT qaya.org (personal)
peterkirk AT qaya.org (work)
http://www.qaya.org/



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