In psychology, there is an idea of "locus of control". I think OOP done well and applied in suitable scenarios results in entities that have internal locus of

In psychology, there is an idea of "locus of control". I think OOP done well and applied in suitable scenarios results in entities that have internal locus of control; it's mutations of state are internally managed. OOP done poorly has external locus of control where some external "service" or "util" or "helper" manages the mutation of state.