2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/196879The talk centers around the question: Can general-relativistic description of physical reality be considered complete? On the way I argue how -- unknown to many a physicists, even today -- the ``forty orders of magnitude argument'' against quantum gravity phenomenology was defeated more than a quarter of a century ago, and how we now stand at the possible verge of detecting a signal for the spacetime foam, and studying the gravitationally-modified wave particle duality using superconducting quantum interference devices.Invited talk, First IUCAA Meeting on the Interafce of Gravitational and Quantum RealmsGeneral Relativity and Quantum Cosmologytext