To break spacetime up granually, to invoke quantum gravity, shouldn't we lower any acceptable mathematical enterprise, ie. M-Theory, towards zero? Wouldn't such an acceleration kneel down at the feet of Planck Time, or whatever unit of measurement a quantum leap is possible? And then what of Entanglement Theory? Could a particle and anti-particle occupy the same space but in different universes? Or could you jump in a quantum leap AT zero Planck Time in any of the current theories put forth to break the symmetry?

I only need a topical answer, one for the layman, to illustrate what I've tried to articulate as my Thought-of-the-Day.