It's interesting to think about why many people believe tribes like this should remain "uncontacted". For better or worse, it's revealing of modern values.<p>Also, what is the long term fate of such tribes? Without genes flowing in, it's probably not good.<p>I wonder about a protocol that a high technology civilization could use to contact them. Priorities would be to avoid violence, disease, misunderstandings and so on but at the same time, to allow them enter into the modern world over some generations. Kind of like sci-fi where an alien species contacts humanity (e.g. Childhood's End).