I read David's father Kenneth Good's book Into the Heart: One Man’s Pursuit of Love and Knowledge Among the Yanomami, which was amazing. He appears in José Padilha's fascinating documentary about anthropologists Secrets of the Tribe, kind of an exposé of dirty secrets of anthropology, and a scandal about controversial allegations in the book Darkness in El Dorado. I'd read about Chagnon and the Yanomami, but not the grubby shambolic reality.