In 1971, James Robinson and Helmut Koester published a collection of essays that undertook "the dismantling and reassembling of the categories of New Testament scholarship." In their exploration of Trajectories through Early Christianity, Robinson and Koester recognized that terms ("categories") are "the capsules in which the heritage of scholarly achievement is transmitted from generation to generation." Three decades later, the study of Christian origins is in significant respects a field remade along the lines that Robinson and Koester proposed. One indication of the magnitude of their achievement is the rise of the term "diversity" in the vocabulary requisite for the study of Christian origins.