Second, roughly 26% of the world is under the age 15. That simply isn't going to happen. If nothing else, consider the vocabulary of that demographic. Can you really see someone wearing the mitre who uses "like" or "dude" in every sentence? I didn't think so.
Third, almost 8% of the world population is already at retirement age. Now sure, this job isn't one that exactly requires youthful vigor - but the last guy just retired for reasons of old age. He took the job at the spry age of 78 - you'd like to think that the college has learned its lesson.