Не спи - кругом змеи! Быт и язык индейцев амазонских джунглей.

A linguist offers a thought-provoking account of his experiences and discoveries while living with the Pirahã, a small tribe of Amazonian Indians living in central Brazil and a people possessing a language that defies accepted linguistic theories and reflects a culture that has no counting system, concept of war, or personal property, and lives entirely in the present.