In Terry Pratchett's Discworld series, the Law of Conservation of Reality is a principle imposed by forces wanting wizards to not destroy the world, and works to limit how much power it is humanly possible to wield.[citation needed] Whatever your means, the effort put into reaching the ends stays the same. For example, when the wizards of Unseen University are chasing the hapless wizard Rincewind in the forest of Skund, the wizards send out search teams to go and find him on foot. The Archchancellor beats them to it by using a powerful spell from his own office, and while he gets there first by clever use of his spell, he has used no less effort than the others.[citation needed]