Has there ever been a society that we know of, that demonstrated no religious behavior?
As far as I have always thought, it's universal behavior, expressed by common features such as rituals. I had recently debated this with someone, who pointed out the case of the Amazon Basin's Pirahã people, someone wrote a book about them after the converted a Christian missionary to atheism, according to this article:
http://freethinker.co.uk/2008/11/08/how ... n-atheist/
But according to wiki: The Pirahã have no concept of a supreme spirit or god[10] and they lost interest in Jesus when they discovered that Everett had never seen him. They require evidence for every claim you make. They aren't interested in things if they don't know the history behind them, if they haven't seen it done.[4] However, they do believe in spirits that can sometimes take on the shape of things in the environment. These spirits can be jaguars, trees, or other visible, tangible things including people.[11] Everett reported one incident where the Pirahã said that “Xigagaí, one of the beings that lives above the clouds, was standing on a beach yelling at us, telling us that he would kill us if we go into the jungle.” Everett and his daughter could see nothing and yet the Pirahã insisted that Xigagaí was still on the beach.[12]
But this still is religious behavior?
Does anyone have any thoughts on this?








