Answer:
Both eventually came to believe that the Rosetta Stone hieroglyphs represented sounds rather than things.
Step-by-step explanation:
"The Riddle of the Rosetta Stone" is an insightful book on the ancient Egyptian hieroglyphics. James Cross Giblin's book deals with the ancient stone, the Rosetta stone, which was discovered in 1799 with the decree of king Ptolemy V Epiphanes written in three scripts. The first two were written in Ancient Egyptian hieroglyphics and demotic scripts while the final third was written in Ancient Greek. This stone had been a source of studying hieroglyphics by historians and scholars. In the book, Giblin notes that both Jean-Francois Champollion and Thomas Young are alike. They both eventually came to believe that the Rosetta Stone hieroglyphs represented sounds rather than things. Young began working on the stone, which Champollion expanded.