That's just something that occurred to me while doing a little research. Negative matter has been created in the laboratory, using solitons to invert Newton's third law of motion. For every action there is an equal reaction with negative matter, so if you push a ball of negative matter against an ordinary ball, the ordinary ball will bounce off it and fly in the opposite direction, while the negative matter one chases behind it. However, the negative matter made in the laboratory is what they call "effective" negative matter, because its composed of ordinary matter in which they simply induce the proper complexity to produce a sustainable soliton wave. The effective part is crucial, because that means a black acts like negative matter. Heavier objects, like another black hole, will always settle to the bottom first, by slingshotting smaller ones out and having other smaller ones produce drag by following in its gravitational wake. In other words, the closer you get to a black hole the more everything behaves like negative matter, suggesting black holes are a self-organizing system, and everything is a self-organizing system. That would likely make dark matter actually dark energy and explain why the galaxies don't obey Newtonian mechanics. Heavier objects falling faster would be an expression of yin-yang dynamics, where geometry and motion begin to exchange identities.