Another one for Zimmerman's theory.
In Phonemic Diversity Supports a Serial Founder Effect Model of Language Expansion from Africa by Quentin D. Atkinson (Science 15 April 2011: Vol. 332 no. 6027 pp. 346-349), the author shows that language may have a common origin in the south of Africa.
Now, did that require a mutation, in which case Zimmerman's theory would be invalidated, or was that just a discovery, which would be compatible with Zimmerman's theory but would beg the question of whether that also means a single source for language-able humans (is there another kind?); otherwise it would be difficult to explain why it`s been invented only once.
Bertrand du Castel
In Phonemic Diversity Supports a Serial Founder Effect Model of Language Expansion from Africa by Quentin D. Atkinson (Science 15 April 2011: Vol. 332 no. 6027 pp. 346-349), the author shows that language may have a common origin in the south of Africa.
Now, did that require a mutation, in which case Zimmerman's theory would be invalidated, or was that just a discovery, which would be compatible with Zimmerman's theory but would beg the question of whether that also means a single source for language-able humans (is there another kind?); otherwise it would be difficult to explain why it`s been invented only once.
Bertrand du Castel
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