[LINK] Control of ideas

[Ben Elliston]

On Wed, Jun 13, 2012 at 11:37:19PM +1000, Kim Holburn wrote:

> > For 10's of 1000's of years we lived simple lives and made basic
    tools out of stone and yet look at where we are today, what we can
    build, our technology.  It just seems utterly mind-blowing that
    we're the same species which made those stone tools.  It's been
    suggested that all this cultural change must be linked to a
    biological change in our brains - but the latest thinking suggests
    it's a product of something for more basic - a simple increase in
    numbers.

I would have said that the vital ingredient was energy?

Cheers,
Ben
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