Ignorance of reality is suffering and total ignorance death. Without external pressure from the brutality of nature, humans lose their ability to observe reality, substituting ideology for it instead. Ideology can make people blind. So all great cultures encode reality within ideology, creating religion in the process, and forcing those who refuse to observe reality into contact with Gnon. In this manner they rise above mere subsistence. Corrupt ideology destroys civilization by removing contact with Nature and Nature's God.