I first learned of systems when NASA launched Apollo. It was called cybernetics. [wiki]
I’ve not become an expert, I’ve spoken with a few, and grateful for it, and I’ve developed a radar that tells me when Napoleon comes to dinner and we’re not sufficiently pondering.
Is that too obscure? Of course. On stage during a lecture, Buckminster Fuller leaned heavily into an imaginary wall. He said, “When you go like this, you push the earth.” Does that clear things up?