Combining Einstein's General Relativity (everyday-scale physics) with Quantum Mechanics (atomic and sub-atomic physics) would be the long sought 'Theory of Everything'. So far, the 2 physical realms seem to operate in entirely different ways.
Date: May 27, 2015
Source: University of Tokyo
Summary: Physicists and mathematicians have made a significant step toward unifying general relativity and quantum mechanics by explaining how spacetime emerges from quantum entanglement in a more fundamental theory. ..."
http://www.sciencedaily.com/releases/2015/05/150527112953.htm
“Combining Einstein’s General Relativity (everyday-scale physics) with Quantum Mechanics (atomic and sub-atomic physics) would be the long sought ‘Theory of Everything’. So far, the 2 physical realms seem to operate in entirely different ways.”
How does Plank’s Constant fit into this?