Phil Cook wrote:
> However it is also true to say that we evolved within a particularly 
> stable ecosystem.

Bzzzt. Thanks for playing.

Which ecosystem is that? Arctic? Africa? Polynesian islands? Europe? 
South America?

Many of the disparities between human societies came about exactly 
because of the differences in ecosystems. Europe had metal ore near the 
surface and the eurasian continent was broadly east-west, so Europe got 
a big jump over Africa when humans moved there.  (The latter allowed 
people to take domesticated animals and plants with them when they 
moved, since it was in the same temperate zone.)

People have colonized everyplace in the world, wiped out most big 
dangerous animals they came across (again, outside of Africa), and lived 
through both heat waves and ice ages.  It's been far from stable.

-- 
   Darren New / San Diego, CA, USA (PST)
     "That's pretty. Where's that?"
          "It's the Age of Channelwood."
     "We should go there on vacation some time."

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