It's a symbolic, they have these pictographs, these hieroglyphics, I'm sure you've heard of the word before. And for a while, we had no idea what they said. We would see these inscriptions in these tombs, and we had a sense that, okay, these tombs, especially things like the pyramids, would be for these great kings. We could tell that it was a stratified society, that nobility had better tombs than others, but we didn't really have a good sense of what was going on until we discovered this, which is the Rosetta Stone, which was discovered in 1799. And why, the reason why this is so valuable is it has the same text written in three different languages. It has it written in the hieroglyphs of the ancient Egyptians, and it has it written in a later script used in Egypt called Demotic Egyptian, and most importantly, it has it also written in Greek. And so historians were able to say, okay, we can now start to decipher what these symbols mean because we have a translation of them.