Deirdre N. McCloskey wrote: " It's talking, an adjunct of imagination 
that makes us traders.  Some people argue that evidence of the coming of 
high art and trade point to an invention of language in Africa perhaps 
as late as 60 BC (all such dates are under heated dispute: and you 
thought economics was a field of controversy), with Homo sapiens, better 
named Homo loquens, dominating Africa and bursting out of it with such a 
tool of cooperation."

I thought Xenophon, Plato, and other Greeks *wrote* more than 300 years 
B.C.  What about the Tower of Babel whose collapse was supposed to have 
created more languages?  And Moses *arguing* the liberation of his 
people from Egypt?  All myths?  Otherwise, why date the "invention of 
language in Africa" from 60 BC? 

James Ahiakpor