W dniu 2012-06-06 03:10, piervantrink pisze:
> Hello,
> It has been (genetically) proven
> that all humans descend from a
> single human
No, no such thing has been proven. There's a world of difference between
statements like "all living humans share a certain common ancestor", or
"all living males share a common patrilinear ancestor", or "all living
females share a common matrilinear ancestor" (which are all true) and
"all humans descend from *a single* human" (which is patently false).
The total human population was always large enough to support many
linguistic communities; otherwise it would have gone extinct very
quickly. Our existence on this planet is sufficcient proof that out
species never dropped below the biologically normal level of viability.
> so very logically all
> world languages stem ultimately from
> the language spoken by this first human
One more non-sequitur. To begin with, language is inherited culturally,
not biologically. Secondly, there never was "one first speaker" or "one
first human". Language functions as a code of social communication, so
there can be no natural language without a whole community of users.
Linguistic monogenesis is possible and imaginable, but not demonstrable
at the present state of our knowledge, and not logically inevitable.
Piotr