Many campus assaults are committed by serial rapists who prey on naive underclasswomen by using alcohol or drugs, as well as physical force. One study found 84% of "sexually coercive" experiences occurred during the first two years of college.Further, prosecutors are less likely to pursue ambiguous cases, particularly ones that involve no witnesses and victims who were too drunk to know what happened.University of Virginia law professor Anne Coughlin, who studies the intersection of criminal law and feminist theory, has wrestled with this issue for years. Female students have told he...