What a dynamite premise! The story begins on an ordinary day. Ordinary, that is, until citizens of the world open their front doors and discover a small wooden box that contains a single string, and each person's string reveals the exact length of their life. The unfolding story had me turning the pages at lightning speed even as it pondered a profound philosophical question: how would your life be different if you knew exactly when it would end? And would you even choose to find out that…