We are very carefully trained, as students in anthropology, in human anatomy. In fact, in the anatomy of a diverse set of animals. So that we learn the diagnostic features of teeth, and jaws, and various bones of the body. For example, when we are in the field, we are constantly looking at the surface of the ground for fossils which have eroded out of these ancient deposits. You can make decisions right away as to whether or not it’s an antelope or a baboon or a carnivore, or whatever. Because each one has its own diagnostic anatomy. And it’s something we spend a lot of time doing in school, training to identify these various things. And then of course going into the field and applying it, and even expanding our understanding of anatomical variation more, even more than we did in graduate school.