To be fair, there are relativistic generalizations of MOND, in the sense of relativistic theories that simplify to MOND dynamics in the low energy case. My und

To be fair, there are relativistic generalizations of MOND, in the sense of relativistic theories that simplify to MOND dynamics in the low energy case. My understanding (this not being my field) is that they're sort of kludgey and non-calculable and that no one takes them very seriously. All the "real work" on MOND is just done using the classical stuff. And yeah, that seems like pretty terrible cheating. It's one thing to hang a big theory on a single conjecture, but you still need to be trying to prove the conjecture.