Bostrom’s article, “The Fable of the Dragon-Tyrant,” tells the story of a planet ravaged by a dragon (death) that demands a tribute which is satisfied only by consuming thousands of people each day. Neither priests with curses, warriors with weapons, or chemists with concoctions could defeat the dragon. The elders were selected to be sacrificed, although they were often wiser than the young, because they had at least lived longer than the youth.