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A system is a structured hierarchy of subsystems and components. It has three fundamental properties:

  1. Boundaries, which include not just an interface but also hand-off between the entities it binds
  2. Structure, which is a collection of interrelated and/or interdependent parts that often includes a graded hierarchy, and
  3. Synergy, which implies that the whole is greater than the sum of its parts and that the system possesses emergent properties that are not divisible to its subsystems.


Source: Internal (based on slides from Prof. K.G. Hambleton, Defence Engineering Group, UCL)

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