Comment Re:The true believer (Score 1) 1328
But since it's written down in a special black book, that makes it totally sane and mainstream.
No. It's sane and mainstream because it is a part of the culture.
It is a part of the culture because it made the culture "fitter".
Not evolution per say, but culture changes slowly and a powerful religion certainly gave advantages (in warfare and others) mere centuries ago.
Of course religion still is a part of culture.