 The examination also situates individuals in a “field of documentation.” The results of exams are recorded in documents that provide detailed information about the individuals examined and allow power systems to control them (e.g., absentee records for schools, patients’ charts in hospitals). On the basis of these records, those in control can formulate categories, averages, and norms that are in turn a basis for knowledge. The examination turns the individual into a “case”—in both senses of the term: a scientific example and an object of care. Caring is always also an opportunity for control.