Abstract
Medicine today, as both art and science, embodies a split personality. The ensuing tension—between individualized consideration, experience, and judgment on the one hand, and standardization, objective evidence, and guidelines on the other—plays out in the simultaneous aspirations of the medical humanities and evidence-based medicine, and in a host of other telling terms and movements. This is not a new tension, however. We turn in this paper to the critical but complex history of the term “personal equation” as both reflective and generative of this tension on both sides of the Atlantic during a formative period in medicine from the mid-19th through the mid-20th centuries. The term was featured in almost every...