In 1980 I was a red kid and no one could have said anything bad about the Soviet Union. At least this is how my grandfather used to remember me. Arou… - Luboš Motl

… if one studies quantum gravity, something prevents you from localizing objects and particles with a better precision than one Planck length or so. String theory makes these guesses quantitative in various ways.

You can't define whole disciplines of science to agree with random constraints that you invented. Instead, the purpose of disciplines of science is to decide whether your assumptions about the Cosmos and other things are correct. If there is a disagreement between the best theory and your assumptions, it's your assumptions that are wrong according to science.

... quantum mechanics is a complete, unified, coherent, and mathematically super-elegant scheme for providing us with (probabilistic) answers to all questions that seem to have any empirical sense.