The fourth field is archaeology. Which is not part of anthropology in Europe and tends to confuse people.

I'm a first year Ph.D. student in cultural anthropology at a four field program and I'm not quite sure why people are so up in arms about the wording change. The AAA isn't saying there isn't room for science in anthropology or even that the scientific method isn't used; just that the field is broader than that and can encompass other forms of knowledge as well.