Lethal Weapons And The Evolution Of Civilization "It's about 2 metres long, made of tough spruce wood and carved into a sharp point at one end. ... At 400,000 years old, this is the world's oldest spear. And, according to a provocative theory, on its carved length rests nothing less than the foundation of human civilisation as we know it, including democracy, class divisions and the modern nation state."
New Scientist 10/19/12