This essay investigates the origins and assesses the advantages and disadvantages of the new field known as Wissensgeschichte from the perspective of an American intellectual historian. It argues that while some historians of science may be ready to embrace a new identity as historians of knowledge, this terminology remains baggy and invites facile applications of Foucauldian theory. The essay concludes with the hope that the history of knowledge approach may instead open up new avenues for conversation and collaboration between historians (...) of science and garden variety historians. (shrink)