"A naturalist once took a train of Processionary Caterpillars and placed them on the rim of a flower pot in a continuous chain. They marched for days around the flower pot, each one supposing the caterpillar in front of him knew where he was going. Each was the Authority to the one behind. Food and water were placed nearby, but the caterpillars continued marching until they dropped off from exhaustion." Baker frowned. "And what's that got to do with--?" "You," said Fenwick. "You just led the way down off the flower pot. You just got promoted to head caterpillar." End of Project Gutenberg's The Great Gray Plague, by Raymond F. Jones