Pharoah, let my people go: How did ancient Egypt become a land of slaves building fantastic monuments to dictatorial leaders? The land of Egypt was rich and fertile, a seeming paradise for egalitarian living. Stephanie Pappas writes in Live Science about how despots “evolved” in ancient societies, but that’s a misleading use of the term; it actually was a series of bad choices by free people. She writes how Simon Powers at the University of Lausanne came up with a mathematical model to explain the shift from egalitarianism to despotism. Whether it actually explains them could be disputed, but he...