Since the second half of the 20th century, serious discussions and processes of selfcriticism have been experienced in the discipline of anthropology on method and ethics. Most of these discussions took place around Chagnon's book. The book of Napoleon A. Chagnon called "Yanomamö Fierce People", a long-term field study between 1964-1991, is based on an ethnographic research about the locals of Yanomamö, where the researcher spent approximately his 60 months together with them. It is considered that, the methodological tools of ethnography, which can be formulated as "being there", experience "," observation, "understanding the other", are often violated in this study. The study can also be expressed as an evidence that the locals do not mean anything but data sources. In this context the chapters of the book are being evaluated from the ethical point of view.