Gravity used to be viewed as a force of duality or possibly even more complex than that. But throughout the ages, especially after the Middle Ages, and along with the development of modern science, it has been analyzed in isolation and has been deemed a force of singularity.Although a simple truth is always appealing, Grand Unified Theory is trying to present the fact that nothing could ever exist as a singularity. True unification starts from 0, 1 is transient, minimum is 2 … then many, many until infinity, which ends with 0 again. That is to say: Aristotle noticed gravity and levity always appear together in the air. Archimedes noticed gravity and buoyancy always coexist in the water. Along with development of transoceanic voyages, Galileo Galilei and Isaac Newton started analyzing gravity in confined moving vehicles, and gravity has been described as a single attractive force between two objects. At the beginning of the 20th century, Albert Einstein started to imagine gravity as a single repulsive force between matters and spacetime. Repulsive or Attractive ? Matter or Empty Space ? Mass or Vacuum ? Atomic Energy or Quantum Energy ?!?! Umm, the Grand Unified Theory … Uno starts from 2 …and … 0.