Quantum Mechanics and General Relativity are fully compatible, and have a common origin: the expanding (hyper) balloon universe.

Please download the paper and then read the abstract (since crucial formulas are not appearing in this window, and also hyperlinks are not working). This is just a brief overview: Relativity is inside the light cone phenomena, while Quantum Mechanics is outside the light cone phenomena, dictated just by the scale (i.e. whether we use classical/human scale or sub-atomic scale). This recent paper [‘Quantum principle of relativity’; Andrzej Dragan, Artur Ekert, New. J. Phys. 22 (2020) 033098] has shown that every exotic Quantum effect like superposition, entanglement, probabilistic behavior, multiple paths etc. can be explained just by allowing superluminal possibility. The 'inside the light cone' phenomena, and the 'outside the light cone' phenomena together span the entire region within the space and time axes. Only in unison they complete the entire picture. We failed to realize that the same spacetime is getting split into 'space like' and 'time like’ regions based on scale. And the reason behind this is not the magical (?) speed of light. That would have turned relativity into just a branch of electromagnetism. It turns out that the c is the radial expansion velocity of our universe. Quantum Mechanics and Special Relativity are like two sides of the same coin. But understanding the relation between Quantum Mechanics and General Relativity is a bit tricky, because according to General Relativity, gravity is the warping/curvature of the 4 dimensional spacetime itself. At first sight, Quantum Mechanics and General Relativity seem to be utterly incompatible! But actually, Special Relativity’s big brother General Relativity only complicates things a bit, but does not become inconsistent with Quantum Mechanics altogether. The only difference between the warped spacetime of General Relativity, and the flat spacetime of Special Relativity is very similar to the difference between a stretched rubber membrane, with and without a metal ball placed on it. This paper does not sacrifice any of the spectacular success of General Relativity and also does not compromise with any of the stunningly accurate predictions of Quantum Mechanics. And yet, this paper harmoniously brings Quantum Mechanics and General Relativity together (and solves several pressing problems in physics). Just bear in mind that Nature simply cannot afford to make our two greatest theories incompatible. After all, both General Relativity and Quantum Mechanics were based on what nature was actually telling us, and nature herself would be accountable for any genuine contradiction (but not for the breakdown of our physics due to our misunderstanding!) Gentle reminder: Please download the paper and then read the abstract