@ThreeSigma #StringTheories do and will make testable predictions now and in the future, including for #CMB signature search (right now),#DarkEnergy and #DarkMatter , all well up above Planck. More importantly strings have given us tools that help us think in spacetime topologies that might upset the apple cart.Strings functionally unified quantum mechanics and gravity for the first time ever in one of those. The tools of string theory have wide application in unifying math and physics elsewhere