Proper presentation of a case in court is dependent upon proper preparation. Proper presentation means an intimate knowledge of the facts, the parties, possible witnesses, and, o fcourse, the governing legal principles. Indeed, proper preparation means far more than knowledge. It embraces true compre-hension. Before an advocate can present his client's cause or meet his adversary on equal terms, he himself must completely understand the problem. Clear expression of an idea is impossible without a clear understanding of it.
James Dooley, How to Try a Personal Injury Case, 15 Clev.-Marshall L. Rev. 433 (1966)