It is an unresolved question whether the universe is discrete or continuous in its intricate quantum level structure. See for example: Is the universe finite and discrete? How could spacetime become ...
This is an excerpt from the Wikipedia article http://en.wikipedia.org/wiki/Theory_of_everything_%28philosophy%29. Nicholas Rescher Properties and impasse of self-substantiation In “The Price of an ...
We know that Quantum Theory should be considered as a framework in which all other theories/forces (Strong, Weak, EM and Gravity) exist. For example, we have the Quantum Chromodynamics, Quantum ...