Hanna Rosin

There are always signs that a reign is ending, and they are usually spotted not in the king himself but in his court. In the inner circle, latent jealousies between advisers spill into open conflict, as they angrily debate who is to blame for the calamity, chewing over each other's past errors and pointing the finger at old and nascent enemies.

Evolutionary psychology tells us that men, especially powerful men, feel invincible and entitled to spread their seed, and that women can't resist the scent of masculine power. Women, by contrast, are said to be more altruistic and collaborative, seeking power so that they can share it with others.

It is only when you watch the dense mass of thousands of ants, crowded together around the Hill, blackening the ground, that you begin to see the whole beast, and now you observe it thinking, planning, calculating. It is an intelligence, a kind of live computer, with crawling bits for its wits.