Once upon a time, on a world remarkably unlike our own, a castle built itself at the top of a hill. And every day, from purple moon to red moon, the castle would lower its drawbridge. Until one day, a sympathetic road decided to go out of its way and create an extension to the castle. Because of this, a visiting chariot became confused and brought its passengers to the castle. Because of this, the passengers decided to enter the castle to ask someone for proper directions. Finally, the castle had successfully ensnared occupants. And ever since that day, the castle’s drawbridge has never been seen lowered.
[About the Exercise]