And we are still trying to get a better understanding of how this was done. We actually now don't believe that it was done by slave labor, but instead, it was done during, you could say, the off-season by the peasants as a form of taxation. Okay, you're done planting or harvesting your crops. Well, now that you have some time, and this shows actually the importance of agriculture for freeing people up, so to speak, why don't you help the pharaohs build these massive tombs, which I've seen various estimates that might have taken someplace between 10 and 100,000 people several decades to build each. But these are, even today, these were built over 4,500 years ago, are some of the most iconic symbols that humanity has ever created. And the reason why we know so much about ancient Egypt, ancient Egyptian or ancient Egypt, is that we have been able to decipher their writing. It's a symbolic, they have these pictographs, these hieroglyphics, I'm sure you've heard of the word before.