Briefly, then decided it was mostly Wiener’s delusions of grandeur picked up by people who he could easily bullshit, adding very little to the basic engineering subject. Did have a paper in IEEE systems, cybernetics, and man journal though :)
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Control theory is bread-and-butter engineering routinely used in everything from thermostats to autopilots to missile guidance. Dates to 1930s. Wiener made a few key early contributions in the 1940s and then forked off into a cult of personality pseudoscience ama cybernetics.
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Yeah he’s one of the principals. It was really never more than a track of famous conferences and a few political enthusiasts. To get a sense of control theory browse the ToC of this standard undergrad text.
That’s a good example to see the differences. In control theory the statement is called the internal model principle and is used in actual design. Like to design a system that rejects a sinusoid disturbance you’d put an oscillator in. The cybernetics version is more a zen koan.