The problems with ST are two folds:
(1) Experimentally, to probe at the Planck level, we would need an LHC the size of our galaxy, and a billion black holes to fuel it in energy. So present technology is ruled out.
(2) Theoretically, ST has developed such concepts as Kaluza-Klein compactification, Calabi-Yau manifolds, moduli stabilization to arrive at 10500 possible worlds. And the only claim the string theorist has is that one of those must be our world, which is not much of a claim considering the mental gymnastics one is required to do to get to that.
So all in all, ST remains in the domain of speculative science, and I'm being very generous with the word "science" here.
(1) Experimentally, to probe at the Planck level, we would need an LHC the size of our galaxy, and a billion black holes to fuel it in energy. So present technology is ruled out.
(2) Theoretically, ST has developed such concepts as Kaluza-Klein compactification, Calabi-Yau manifolds, moduli stabilization to arrive at 10500 possible worlds. And the only claim the string theorist has is that one of those must be our world, which is not much of a claim considering the mental gymnastics one is required to do to get to that.
So all in all, ST remains in the domain of speculative science, and I'm being very generous with the word "science" here.
