In 1971, a group of people known as the Tasaday were discovered on a remote island of the Phillipines known as Mindanao. They wore leafy loincloths and subsisted off what the forest could provide, possessing no knowledge of tobacco, corn, rice, or domesticated animals. They spoke a new dialect of Malay-Philipino language that included no word for outsiders, war, weapon, or enemy, giving them the title ‘The Gentle Tasaday’. The family unit was nuclear and the community has no formal organization or government outside of some loose food-sharing networks.
Today, Tasaday life is way different and matches more modern tribal life in the Phillipines, as documented on their website. The question is, however, whether this modernization was normal development post-contact or whether there was a hoax involved.