It is so fascinating and this guy has to be one of the brightest on the planet. I wonder if there is another framework that does not involve curved geometries / manifolds that is better suited to the problem.
IMO there's are simple reason why we don't fully understand what gravity is is because our theoretical models are wholly inadequate and incomplete, if not completely 'wrong'. Even General Relativity isn't actually perfect in charting movements of the planets and that's a very simple phenomenon but it's just the best thing we got (so far). The complete understanding of Gravity may well be centuries if not millennia away. Someday we may..
String theory predicts far too much: a huge number of solutions known as “string vacua." However, despite the enormous number of possibilities, the string theorists can't give me one potential solution that I can apply to understanding women.
Gravity is a transformation of Euclidean flat electromagnetic space which may also be generalized into mass-generalized-Maxwell's equations, see: "Reality is a Mathematical Model". The fermion model is an elementary result as expounded in "A Mathematical Preon Foundation for the Standard Model". No strings nor Higgs boson necessary.
