Furman University professor Margaret Oakes draws parallels between our world and J.K. Rowling's fictional universe. Humans and wizards share some technological achievements--the wheel, optics, and basic engineering principles--but wizards have the added ability to control their world through magic. Their powers over natural forces outstrip ours in many areas, yet they have chosen to retain the old ways, which require time and effort, and which inflict a fair degree of discomfort or ineffectiveness. Why do they prefer this combination of the antiquated and the advanced?