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>>I was referring to biological cladistics, in which the results become more
>>stable as more characters are included to describe each taxon. I don't
>>know of any comparative lexical work that uses cladistic methodology, but
>>it wouldn't surprise me if somebody had thought to try it.
>>
>>
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>Take a look at Ringe and Warnow's stuff, which was briefly discussed
>on the list in May 2003:
http://www.cis.upenn.edu/~histling/ et seqq.
>A particularly interesting result, which certainly no one expected,
>is that Germanic probably started out as a satem language that was
>mugged by centum speakers later on, due to a migration into centum
>territory.
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Either that, or the Balto-Slavic and Indo-Iranian languages satemised
independantly. I can't see how a satem>centum change could really take
place.