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> explain away dark matter

This kind of presumes dark matter has been definitively proven already, though.

From the outside, CDM may be a better theory than MOND, but it doesn't seem settled to me. I haven't heard anyone describe it as a "Law" yet.

Couldn't someone equally characterize the creation of dark matter as "adding and tweaking mass until you fit the data"?

Man, you're doing the thing I just complained about, where you implicitly frame MOND and CDM as the only two alternatives! :P

Fair, I'm not a physicist. I don't really know the more obscure variants of dark matter and modified gravity theories.

But what about you? Are you not doing https://xkcd.com/2501 ? Is your expectation reasonable on HN?