Reply #65: Thanks for the links, Ichingcarpenter

[Uncle Joe]

I wasn't trying to suggest that every human or society has succumbed to their aggressive side but it's there nonetheless.

By your own link, Caral seems to be an exception, not the rule.

For over a century, archaeologists have been searching for what they call a mother city. Civilisation began in only six areas of the world: Egypt, Mesopotamia, India, China, Peru and Central America. In each of these regions people moved from small family units to build cities of thousands of people. They crossed the historic divide, one of the great moments in human history. Why? To find the answer archaeologists needed to find a mother city - the first stage of city-building.

Civilisation through conflict.

They couldn't find one anywhere. Everywhere this first stage seemed destroyed or built over. And so, instead, scientists developed a number of theories. Some said it was because of the development of trade, others that it was irrigation. Some even today believe it was all because of aliens. Gradually an uneasy consensus emerged. The key force common to all civilisations was warfare.

When archaeologist Ruth Shady discovered her 5,000 year old city of pyramids in the Peruvian desert, all eyes were on the New World. Ruth's extraordinary city, known as Caral, is so much older than anything else in South America that it is a clear candidate to be the mother city. It also is in pristine condition. Nothing has been built on it at all. Instead laid out before the world is an elaborate complex of pyramids, temples, an amphitheatre and ordinary houses.

http://www.bbc.co.uk/science/horizon/2001/caral.shtml

I don't know why Caral was the exception, perhaps the high altitude, maybe it was the use of drugs to alleviate stress?

For whatever it's worth I'm against the so called "War on Drugs" as well.