How We Could Build a Civilization We No Longer Know How to Rebuild For centuries, anyone could look at the symbols carved into the walls, temples, and monuments of ancient Egypt. They were still there. They had not been destroyed. They had not been erased. They were not hidden. And yet the tradition that could read them had disappeared. The hieroglyphs had survived, but the chain of people capable of understanding them had not. The information remained physically preserved while the human ab...