Scientists looking for the missing 83% of the universe’s mass can stop. It has been found. It is to be seen in this shape, in groups of 5 or 6, on boyfriends’ sidetables around the world. It is apparently self-propagating (a single unit can somehow spawn numerous others) and sentient, given to appearing and disappearing at will. Be warned though: it is hard to detect. The only surefire method I’ve gleaned has been by walking barefoot across a seemingly safe floor. Science is hard.