I feel true sadness for the Lykov's, being 'discovered', then somewhat forced by the intrusion of others to be aware of their greater surroundings and soon thereafter the father and sister seeing the rest of their family felled in quick succession.
I feel true sadness for the Lykov's, being 'discovered', then somewhat forced by the intrusion of others to be aware of their greater surroundings and soon thereafter the father and sister seeing the rest of their family felled in quick succession.
They'd be going along clearing out land for a road and they'd come across a hollow with residents who had been isolated for decades, if not a century or more. He said they knew nothing about the world at all, though they would have basic tools from way back. Of course, that was 80 years ago now.
Only vaguely related, but after his time in the CCC, my grandfather became a pentacostal preacher, which he remained for the rest of his life. His first "church" was a brush arbor he built himself. Funny how different life was then.
Brush arbor information: http://brusharborquarterly.com/about.html
In some cases, they might have had a less than pleasant experience when they were first contacted by explorers or loggers. Nowadays, while they'd be in danger should they meet illegal loggers and the like, it shouldn't be dangerous for them to contact the authorities. However, their memory from the initial encounter might have been passed on for generations.
Also, as you say, the Brazilian agency in charge of documenting and protecting the Indians has a policy of not forcing contact. So those tribes can remain uncontacted indefinitely.
The page below has more info. Use your favorite translator.
http://mundoestranho.abril.com.br/materia/ainda-existem-trib...
Perhaps more interesting is the case of the Sentinelese, who live on islands in the bay of bengal, and may have had literally no spoken contact with outsiders in hundreds of years:
Seems to me this applies for people living in civilization, as they again and again leave it to live as noble savages. Looks a lot like "grass will always be greener on the other side".