Prof. David Eller is a cultural anthropologist who has conducted field research among Aboriginal societies in Australia and now teaches anthropology in Denver, Colorado. His recent college textbook Introducing Anthropology of Religion is being hailed as the most significant introduction to the scientific study of religion in a decade. His previous AAP book Natural Atheism showed him to be as good a philosopher as scientist. Now we see he is equally skilled as a linguist and semanticist and can show that for knowledgeable atheists "atheism" means more than the absence of god-beliefs: it is the absence (indeed the rejection) of belief altogether.