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Mysteries of the Geometrization of Gravitation

As we now know, there are indeed at least two major difficulties with General Relativity (GR). The first one is related with its incompatibility with quantum mechanics, in the absence of a widely accepted consistent theory that combines the two theories. The second problem is related with the requirement of the dark sectors - inflaton, dark matter and dark energy by the energy-stress tensor, which are needed to explain a variety of astronomical and cosmological observations. While, these dark sectors themselves do not have any non-gravitational or laboratory evidence, the dark energy poses, in addition, a serious confrontation between fundamental physics and cosmology. Guided by the theoretical and the observational evidences, we are led to a slight modification in the notion of the existence of the source of gravitation and its manifestation in GR, which is in striking agreement with not only the theory, but also the observations without requiring the dark sectors of the standard approach. Additionally, it provides natural explanations to some unexplained puzzles.