Dean Christopher Columbus Langdell believed that the study of law should be an interactive and disciplined form of education, in which students were challenged directly by teachers, and through which they learned to analyze cases for themselves.

兰格尔主任相信学习应该是一个互动的和经严格训练的教育形式。这样学生就会直接由教师进行 挑战和考验，这样他们就可以学到如何自己分析案例。