Daniel L. Everett said this quote

“ I did not see Pirahã teenagers moping, sleeping in late, refusing to accept responsibility for their own actions, or trying out what they considered to be radically new approaches to life. They in fact are highly productive and conformist members of their community in the Pirahã sense of productivity (good fishermen, contributing generally to the security, food needs, and other aspects of the physical survival of the community). One gets no sense of teenage angst, depression, or insecurity among the Pirahã youth. They do not seem to be searching for answers. They have them. And new questions rarely arise. ”