Lost Tribes

Various news sites are reporting the discovery of a lost tribe of Indians in the Amazon. Part of me is fascinated by this discovery and part of me is horrified by it.

Apparently these people were spotted inside an 'Ethno-Environmental Protected Area.' That sounds a hell of lot like a zoo to me. I think there is a very real ethical dilemma here. Should these people be left in their Stone Age existence? If so, should they then be treated as barely human curiosities? Observed from afar but not interfered with. I think a case could also be made for intervening and welcoming these people to the 21st century. Unfortunately, either action is patronising and debases the lives of these people. Personally, I think it would probably have been better if this tribe, and others like it, were simply left alone, neither protected or confronted.