From: Philip Sutton (Philip.Sutton@green-innovations.asn.au)
Date: Wed Mar 24 2004 - 07:54:09 MST
My understanding is that sophisticated language skills are thought to
have emerged about 50,000 years ago.
Aboriginal rock art in Australia dates back (I think?) to at least 40,000
years ago. Folk medicine and ecological knowledge would go back at
least that far.
Cheers, Philip
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