Oh that makes for a funny part of the ending too then.<p>While going about your work, you suddenly disappear along with your universe and everything in it. Someone somewhere in the world drank a cup of coffee, which means that he now has an empty cup instead of a full cup. A new universe had to be created with the full cup replaced, and unfortunately your universe had to be thrown away. You continue life as a clone in a new universe with an empty coffee cup somewhere in Nebraska.<p>Why did this happen? Someone picked a copy-on-write map implementation because it had a slightly faster O(logN) delete behavior and unfortunately the re-use function of the map wasn&#x27;t implemented yet because the author has gone on to do a series on the use of monads in baking the ultimate croissant.