 Well, that's certainly true. And let's come back to that final point in just a moment. But before we get there, can you talk about the four different case studies that you examine of wartime extinction in the book? Well, in 335, Alexander the Great, who had just become king on the assassination of his father, Philip II, marched 300 miles southward into occupied Greece. The Macedonians were occupied because Thebes, which at that time was the most iconic city of the 1500 city-states, rebelled