Neutrinos have mass? Next you’ll be telling me that tachyons have class. (Sorry. Even I know that’s a dreadful pun.)

I suspect that dark matter is our current name for “We don’t have a clue.” I’m no physicist, but Eddington was. “Not only is the universe stranger than we imagine, it is stranger than we can imagine.” Nobody really gets what things are like on quantum levels, but we can describe some of them in mathematical language. The same is true in astrophysics. The paradoxes of relativity, the strangeness of black holes, are really beyond the ken of our everyday minds. But at least mathematically, physicists have some handle on them.

Not so dark matter. We are at the stage of searching a coal cellar at midnight for a black cat that isn’t there. Which is why I suspect that once we do get a few clues to whatever dark matter really is, it will make the world of quarks and quantum entanglement look as sensible as baseball.