There’s this notion of variety popularized by cybernetics folks a long time ago. Variety is like the state space of the system. Then there’s a law that says “only variety absorbs variety”.
So if a method has high variety then it must have an equally complex implementation to handle the variety.
When there is a mismatch it means that either the method has parameters that aren’t useful, or that the body of the method isn’t covering cases it should.
https://fffej.substack.com/p/only-variety-can-absorb-variety was my attempt to write it up more fully.