We live in a 3D world comprised of 4 dimensions, if you include time. The unit of spacetime as we "see" it is the proton, comprising of 6 quarks, fermions. Hence since these quarks cannot occupy the same "space" and they are confined by the strong force to the lowest state , then the optimal configuration would be a 3D cartesian systems, i.e. the orbits would always average out to maintain the stable 3D configuration w.r.t the couplings.
So, if our 3D world is defined by the 3D proton, can you extrapolate this idea to dark matter and say the dark matter could be world with a different proton configuration, a higher order of quarks similarly confined.?