I see. Well, TIL. Tbh the more I look at the resolution people (myself included) have for these concepts in general, it really does seem like it's so low as to be virtually meaningless. That even holds for the those individuals or groups of individuals who coined the terms in the first place.

To that end, I find myself gravitating more and more towards higher level abstractions that have multiple existence proofs (e.g. Control Theory) and just looking at everything through lenses like that.