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I think bringing up gremlins in order to lampoon some heterodox hypothesis is intellectually lazy as well.

Dark matter assumes gravity is uniform across the universe. What if it isn't?

Measuring the expansion of the universe relies on the speed of light being a constant. What if it isn't?

It must be noted that both of those hypotheses would be considered highly unlikely to pass Occam’s razor, since they involve a far more radical/fundamental change in our understanding of physics, than sons piddling “dark matter”.

Of course it's lazy, but I said I could improve on it, don't expect me to put in more work than that.

Then it's the job of the alternative theorists to come up with working models with better descriptions and/or predictions. To my knowledge neither MOND nor VSL theories do that, but I wouldn't have any inner conflicts if they did. We're here to learn about the Universe, not to dictate how it works.

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