A casebook's warranties appear in its preface. In their Preface to the First Edition, the authors of Contract and Related Obligation (CRO) undertook to do the following: (1) acquaint the student with the lawyer's role in contractual relations; (2) stress the “private-made” character of much of what we call law; (3) expose students to many different theories about contract; (4) renew the waning practice of “dialectical” teaching by using largely unedited principal cases, and by eschewing summaries and textual notes; (5) reveal the many extra-legal sources of law, including moral, political, and economic reasoning; and (6) offer more general insights as to the nature of law and lawyering. While I believe CRO largely succeeds in these aims, I will focus on its treatment of lawyering, and its presentation of theory and the nature of contract law.
Sidney W. DeLong, An Agnostic's Bible Contract and Related Obligation: Theory, Doctrine, and Practice, 3d Edition by Robert S. Summers and Robert A. Hillman, 20 SEATTLE U. L. REV. 295 (1997).