Well, just think about the Dark Scientist who says "OK, we make up 27% of the universe, and there's a missing 5% we don't see because it doesn't interact with u

Well, just think about the Dark Scientist who says "OK, we make up 27% of the universe, and there's a missing 5% we don't see because it doesn't interact with us." And then some dark model builder says, "Guys, guys. I bet it's SU(3)xSU(2)xU(1) with 3 generations and the parameters tuned so that..."