Sardanishvili's work

is interesting. I will study it. My theory is much simpler and is more closely anchored in experiment and observation. I get the tetrads and the spin connections from 8 Goldstone phases of 9 real Higgs scalars - the latter fit nicely with 9+1 superstrings. The physical reason is non-trivial homotopy for topological defects of the 9 real Higgs scalar fields with 8 relative independent phases. N real Higgs scalars have N - 1 independent Goldstone phases. Local gauging of 10-parameter Poincare group naturally gives 9+1 space of their locally gauged parameters. T4 is 3+1 spacetime and O(1,3) gives 6D Calabi-Yau possibility.
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