Heh, now I will be awake trying to remember a documentary where the pair of anthropologists that got to be part of a major religious ceremony were doing follow up questions and found out it had all been to try to save their souls basically. It wasn't a noble savage private ceremony revealed to the white males; it was save the poor white fools ceremony. :D Totally changes the anthropological data in eeeenteresting ways.
It is going to drive me nuts. (hmm rain forest. sacred substances involved. world tree imagery but what culture doesn't? nuts I tell you, nuts)