My personal, completely layman's theory, is that the dual universe theory is the localized correct approach (there may be other dual universes outside ours), an

My personal, completely layman's theory, is that the dual universe theory is the localized correct approach (there may be other dual universes outside ours), and that at the big bang matter on the other side became entangled as it entered our universe (or dimension?), and that in some sort of cosmological osmosis, matter that broke that barrier and became entangled seeks to return to it's original state (in the other universe) or some similar sort of equilibrium, likely through black holes and white holes. (eg, other universe a white hole here would look like black hole there, and vice versa). Gravity pulls stuff together until it finally collapses into creating a semi-localized blackhole (explaining the theory of a blackhole in every galaxy). Gravity in this case would then be a second tier effect of entanglement which is locally weak but cosmologically strong, with gravity being the opposite. If this were the case, the main place to focus for experimental predictions to reveal more on this would then be probably be anti/dark matter experiments.