Probable fault in balancing mechanic

[Crimson]

that bolded concept was probably contributed to by many factors including bellicosity and tools.

I was reading a little about the Yanomamo:

http://en.wikipedia.org/wiki/Ya%CC%A7nomam%C3%B6

A short video...

http://www.veoh.com/browse/videos/catego...78n3YR7KC9

They have several myths on creation and one of them is the story of Moonblood...
paraphrasing here: one of the "ancestors" wounded "Moon" --(is this the correct translation?) and "his" blood fell on earth and changed into men --(some stories men and women)...

however, these men were inherently "waiteri" (fierce) and prone to bellicosity, violence, etc...to the extent of exterminating each other...

if only droplets of blood (or this blood mixed with water) were the influence, the men were less bellicose and fought less or did not kill...Yanomamo's story says that because of this "Moonblood" nonetheless, all humans are "waiteri"...