[i_no_can_eat]

Precisely. They way I see it, MOND is a useful effective theory. But it is beyond me how people still think of it as a fundamental theory when the closest that anyone ever came up of a general-relativistic version of it is a total mess. As it is, MOND fails solar system tests. So at best, it's a useful effective model for some galactic-scale phenomenology, which would need some fundamental explanation.