This comment itself might be the "real" gold, if in a 100 years, we actually make no material advances in experimental physics and the state of the art remains.

This comment itself might be the "real" gold, if in a 100 years, we actually make no material advances in experimental physics and the state of the art remains. I would bet that it's quite likely, unless somehow we achieve communist utopia and the world economies combine to fund a solar system size accelerator.