“… the predominant method of instruction in the Law School is the case method, first developed as a technique or law teaching by Dean Langdell in 1870, and since extensively employed in virtually all American law schools. The case method is a realistic method which uses the careful examination of judicial opinions as a focus for study and as a starting point for classroom discussion…. The case method also introduces the student to the analytical techniques which lawyers use to sort the relevant from the irrelevant, separate reasoning from rationalization, and distinguish solid principle from speculation. The case method is a flexible instrument….