Thus, the second particle's momentum can be calculated to a precise accuracy because of the momentum conservation law. In 1982, EPR-like experiments were done by Alain Aspect and his colleagues Jean Dalibard and Gerard Roger. Their work confirmed that the spooky action at distance is in fact a reality. Aspect experiments leads to the conclusion that the universe cannot be understood by the sum of its parts because the whole is utterly indivisible . This fact is called non-locality.
General relativity is constructed in terms of light signal.
So, Newtonian gravity is not only still the ruler of all spaceships but could be the entity that represents the fact of non-locality. Furthermore, since gravity is linked to the evolution of the cosmos, the gravitational constant must be a varying constant because universe is indeed evolving. From this simple coincidence, it is very clear that either the electron timescale or the gravitational fine structure constant must be varying because the age of the cosmos is constantly moving ahead. Dirac guessed that the electron timescale is a true constant but the gravitational fine structure constant must be a varying constant. His guess was correct.