[growingkittens]

That happens in system dynamics a lot, actually - there are many independently developed theories in many different disciplines that do not intertwine historically at all. I have met multiple people who work with systems mathematically on a professional level who had no idea about these other things.

[voidhorse]

I've seen this too. In particular there seems to be a huge dividing line between systems research stemming from the physical-mathematical heritage of formal dynamical systems, and the other line mostly stemming from everything Wiener did with cybernetics (and some others who were contemporaneous with Wiener). Both sides can be profitably informed by the other in various ways.