If we could read the thoughts of Aku, leader of a small clan of Sapiens living in the fertile valley of Mesopotamia on the shore of the Black Sea 7500 years ago, it might read something like .. Life is good. It is getting warmer and food is plentiful. For some time now members of my group have heard stories from our trading partners that the Sea Without End, beyond the great hill where the sun vanishes, is reclaiming the land. I indeed have...