We keep talking about dark matter as if it's all one thing, but what if it… isn't?
https://badastronomy.beehiiv.com/p/is-there-more-than-one-kind-of-dark-matter
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Ockam's razor says no, but I wouldn't be surprised in the least. From a purely intuitive point of view, makes sense that many, even most of particles, to be very weakly interacting ones.
In fact, it would make sense that most of particles were to not be interacting with each other at all, but, of course, that's beyond the purview of science.
