"“First I’ve heard of it,” said Arthur, “why’s it got to be built?” Mr. Prosser shook his finger at him for a bit, then stopped and put it away again. “What do you mean, why’s it got to be built?” he said. “It’s a bypass. You’ve got to build bypasses.” Bypasses are devices that allow some people to dash from point A to point B very fast while other people dash from point B to point A very fast. People living at point C, being a point directly in between, are often to wonder what’s so great about point A that so many people from point B are so keen to get there, and what’s so great about point B that so many people from point A are so keen to get there. They often wish that people would just once and for all work out where the hell they wanted to be."