Symmetry considerations dominate modern fundamental physics, both in quantum theory and in relativity. Philosophers are now beginning to devote increasing attention to such issues as the significance of gauge symmetry, quantum particle identity in the light of permutation symmetry, how to make sense of parity violation, the role of symmetry breaking, the empirical status of symmetry principles, and so forth. These issues relate directly to traditional problems in the philosophy of science, including the status of the laws of nature, the relationships between mathematics, physical theory, and the world, and the extent to which mathematics dictates physics.
This is cosmological question about what the universe has become? At earlier time in the Planck era, the symmetry theoretically speaking from a string perspective, is much different then it is in today's matter orientated world?
High Energy particle identification, brings us much closer to the earlier views of the cosmo. Glast determinations, with Compton scattering help us to identify early photon interaction. These views are limited, although they give us a better window on the universe?
Complexity changes these views, from a reductionistic view, as in particle identification, to one of a expansitory nature, when looking at our universe now?
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