System theory is a field that examines how to create systems and more fundamentally examines how systems should be.
In terms of system theory, concrete systems are "equipment", "factory" and "IT system". These parts and functions are combined to form a single object.
The contents of system theory are philosophical matters such as how to perceive the system and a system of how to treat the system.
Systems theory considers the commonalities of systems in completely different fields, and considers systems of systems.
The content of the story tends to be abstract, so it's hard to get a sense of reality.
However, as a cross-disciplinary science, it is a very important field.
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