Abstract
The transformation of societies' age structures has intensified the need for nursing care, especially in economically developed regions of the world. This will necessitate societal decisions that determine how care needs are met in the long term. This article offers a sociological perspective on nursing care using Luhmann's systems theory. To make the designation of a functional nursing system with independent observation plausible, social changes were traced based on historical events, semantics, and other social structures to develop the primary view of the nursing system. On this basis, a functional definition of the nursing system and its relationship to problems and problem-solving is possible. This proposal is intended to clarify the fundamental questions of nursing science: What is nursing and what is behind it? Through abstraction, this article develops a unified representation of nursing's distinct way of observation to support the determination of a unique research object for nursing science as an academic discipline. In line with Brandenburg's statement that nursing science must follow the interests of others as long as it is not possible to conquer a terrain occupied by the discipline independently, the need to develop a genuine discipline remains. Only then, it is assumed, can nursing science significantly contribute to other functional systems and to societal decisions that will determine how care needs are addressed in the future.