The system (ancient Greek Sýstēma composite ) composite ) is generally a delimitable, natural or artificial structure , which consists of various components with different properties, which are considered by certain orderly relationships with each other as a common whole (can) . There is no uniform definition of the term because the meaning assignment is very different depending on the art. Accordingly, the previous sentence is an abstraction in the sense of a largest common denominator. The following concretizations of the individual parameters are possible: The spatial and / or temporal limit of a system can be physically described by its physicality or certain forces (real / material / concrete systems) - or purely mentally constructed, appropriate nature (ideal / immaterial / theoretical systems). All natural systems are real systems that are incurred without targeted anthropogenic influence and obtained (autopoietic) themselves (examples: quantum system, atom, molecule, living sy...