In 1999, Pratchett appointed both Cohen and Stewart as "Honorary Wizards of the Unseen University" at the same ceremony at which the University of Warwick awarded him an honorary degree.
I 1999 udnævnte Pratchett både Cohen og Stewart til "Ærestroldmænd af det Usete Universitet" ved samme ceremoni hvor University of Warwick udnævnte ham til æresdoktor.