In my world," said Posy, "authors write stories, and the characters do whatever the author tells them. It's not like this--the characters don't have minds and lives of their own." "How do you know this?" was Caris' surprising reply. The corner of her mouth turned up in a playful smile. "You do not see the characters when the pages of the book are shut. Is there never a time when you read a book for the second time and you notice something that you didn't remember from the first time? Or hear a story told, and every time it is told it grows and changes in the telling? Change is the nature of everything.