[PaulHoule]

Ashby's law is the only law. [1]

That is, a control system (management structure) needs to match the system it controls in complexity. [2]

This book lists many of the major variables you need to control to run a project [3] such as "hiring/managing employees", "communications with stakeholders", ... A project has a beginning and end, unlike the activities of an ongoing business, but the list in PMBOK is pretty exhaustive. A small project/organization doesn't required a dedicated part for each one of them but as you get larger you need HR, PR, the dedicated project manager and such.

[1] A reductivist statement, yes, but Ashby's law takes the reductivism out of reductionism.

[2] The index case is the Wright Brothers' flier. People thought aviation was a matter of lift and thrust but it's actually a matter of controlling roll, yaw and pitch so you don't tumble and had Galileo understood that he could have built a glider.

[3] https://www.pmi.org/standards/pmbok

[MichaelZuo]

Didn’t Norbert Wiener come up with some during his work on cybernetics?

[PaulHoule]

Yeah, there are other laws. But I'm trying to develop a joke where a criticism of reductivism (too simple analysis, see Marxism or Looksmaxxing) is capped off with "Ashby's Law is the only Law"