If you commit yourself to this epic experience, leave your watch at home. This is a long, slow film. There is no narrator imparting breathless banalities. No cute reaction shots of grinning children or wrinkled grannies. No lovable puppies. No clichés about the simple nobility of these ancient tribes. No documentary packaging. Ottinger was invited into the lives of these peoples, and she stayed a long time, watching and listening, and then she made a film about what she saw and heard. That is worth doing, and worth seeing.