This paper, through established physical examples, argues that observed relativistic phenomena motivate the existence of a primitive real time which has been identified with local proper time, an interpretation that may have contributed to persistent conceptual difficulties at the foundations of physics for over a century. The paper demonstrates that physical systems accumulating different amounts of proper time nevertheless continue to communicate, interact, and coexist within common present moments. These observations indicate that time dilation reflects changes in the rates of underlying physical evolution rather than changes in the progression of real time, which, unlike proper time, cannot be operationally measured or used to compare clocks. Consequently, an alternative ontology is proposed in which the energy-momentum tensor is proposed to influences only spatial geometry, thereby affecting spatial measurements and the evolution of mass-energy within that geometry, while leaving the mathematical formalism and experimentally verified predictions unchanged. Distinguishing proper time and clock time from real time provides new conceptual pathways toward the Wheeler–DeWitt frozen formalism8, black-hole physics, spacetime2 singularities, the black-hole information paradox, string theory, the incompatibility between relativistic and quantum-mechanical notions of time, the arrow of time, and the quantum measurement problem.
Jaswant Airara (Sat,) studied this question.