We don't understand what those are or how they come about, so how does that help us objectively reason about whether a particular black box does or does not hav

We don't understand what those are or how they come about, so how does that help us objectively reason about whether a particular black box does or does not have them, especially when it behaves as though it does, beyond arbitrary I-know-it-when-I-see-it "things I don't like don't have the property" style declarations?