Which thesis best fits into beto’s essay? expert scholars used the 1799 rosetta stone discovery to unlock puzzling information. hieroglyphics are mysterious symbols that were not understood until the discovery of the rosetta stone. giblin successfully proves that it took nearly 1,400 years and countless visitors to uncover the hidden location of the rosetta stone. giblin successfully proves that with the discovery of the rosetta stone, the ancient art of hieroglyphic writing became less mysterious.