> without assuming that the cosmological principle holds on too short distances There's still the problem of colliding galaxies showing a weakly interacting ce

> without assuming that the cosmological principle holds on too short distances There's still the problem of colliding galaxies showing a weakly interacting centroid that's shifted compared to the masses but interacts with the visible masses. If truly are variation in the local constants, then one has to explain why these variations shows inertia, at such point it starts looking more and more like matter