I can't imagine what these paranoid lunatics would make of The World in Shadow: When Steven Barber turned in a short story this semester for his creative-writing class at the University of Virginia's College at Wise, his instructor was alarmed. The 23-year-old student had produced an imagined account of someone on the edge of a violent breakdown, touching on suicide and murder. "It had to be acted on immediately," says Christopher Scalia, the instructor. He alerted administrators, who reacted