Originally Posted By: Bill
when Einstein developed the idea of curved spacetime he also adapted some very good math that fully described it.


The one thing that seems to be missing from this description is an explanation of the force that must, surely, be needed to cause and maintain that curvature.

Even the "duality" idea doesn't really solve this, because, in the same way that you cannot observe a quantum object as a particle and a wave at the same time, presumably, you cannot treat gravity as a force and a curvature of spacetime at the same time.

There never was nothing.