system? A system is a set of things—people, cells, molecules, or whatever—interconnected in such a way that they produce their own pattern of behavior over time
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Stay humble—stay a learner.
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Our models fall far short of representing the real world fully.
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Everything we think we know about the world is a model.
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There are no separate systems. The world is a continuum. Where to draw a boundary around a system depends on the purpose of the discussion.
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• The least obvious part of the system, its function or purpose, is often the most crucial determinant of the system’s behavior.
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Purposes are deduced from behavior, not from rhetoric or stated goals
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If you look at that definition closely for a minute, you can see that a system must consist of three kinds of things: elements, interconnections, and a function or purpose.
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A system* is an interconnected set of elements that is coherently organized in a way that achieves something.
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Pictures work for this language better than words, because you can see all the parts of a picture at once.