Full Idea
It has been pointed out that presentism is an open question in so far as a fixed foliation theory of quantum gravity has not been ruled out.
Gist of Idea
A fixed foliation theory of quantum gravity could make presentism possible
Source
J Ladyman / D Ross (Every Thing Must Go [2007], 3.7.2 n75)
Book Reference
Ladyman,J/Ross,D: 'Every Thing Must Go' [OUP 2007], p.173
A Reaction
[They cite B.Monton for this point] I don't understand this idea, but I'll have it anyway. Google 'fixed foliation' for me, as I'm too busy.