Curtis interviewed Chagnon and put to him the assertion of fellow anthropologist Brian Ferguson that much of the Yanamamo violence, and particularly its intensity, was very strongly influenced by the presence of Westerners giving individuals goods, which were then fought over - in this case the goods were highly prized and useful machetes. Chagnon, however, insisted that his presence had had no influence whatsoever on the situation citing the fact that similar fights happened when he wasn't present, which he also documented. Curtis then asked, "You don't think a film crew in the middle of a fight in a village has an effect?" Chagnon replied, "No, I don't," and immediately walked out of the interview. References External links Biella, Chagnon and Seaman Yanomamo Interactive The Ax Fight Gregory, J. 2000. "Macho Anthropology." Salon.com, September 28, 2000. 1975 films Yanomami in film Anthropology documentary films Films directed by Timothy Asch