The theory and practice of argumentation and debate

by Victor Alvin Ketcham

Before turning to outside sources the student should carefully examine the contents of his own mind to determine just how much he really knows about the subject. He should, however, distinguish between exact knowledge and mere conjecture. His exact knowledge, gained from whatever source, is perfectly valid from the standpoint of evidence providing it can be proved. The line between exact knowledge and mere conjecture is determined by the ability of the student to lay his hands upon sufficient evidence to prove the thing that he believes to be true.

2. Personal interviews.

If the question is a local one personal interviews are both practicable and valuable. Interviews with persons who are connected in some way with the subject of dispute, or who are in a position to have exact knowledge of the subject-matter, or who are taking an active part in the local discussion of the subject, are a most important source of evidence. Interviews with such persons not only give the student facts, reasons, and opinions, but they usually reveal other sources to which he can go directly. For example, in a local debate on the question of whether the city, or the street railway company should bear the expenses of building a bridge which they used in common, the debaters obtained personal interviews with all the city officials having anything to do with the bridge, and with the officials of the street railway company. Prominent citizens and business men of the city were also interviewed. These interviews were productive of a large amount of material in the form of facts, reasons, illustrations, opinions, and references to other sources of material. In the discussion of any local question the debater will usually find the parties concerned willing, and even eager to give him “ammunition” for the debate.

In collecting evidence on questions which deal with the problems of commerce, taxation, economics, politics, and education, the student will usually find some men whose opinions are entitled to careful consideration and with whom interviews may be arranged. Whether these men are quoted as authority will, of course, depend upon their known reputation in the branch of knowledge upon which their opinion is asked. Even if the debater does not think it best to quote the person interviewed, he may gain from him much valuable help. Arguments reasoned out from the facts of a case depend for their worth upon the validity of the reasoning process and not upon their source. Therefore the arguments of any well-informed, intelligent person, if based upon facts and logically sound, can be utilized. Moreover, such persons are often able to give information regarding sources of evidence which may have escaped notice. The college student would do well to consult the members of the faculty whose work would make them familiar with the subject-matter of the argument. The student should by no means pass lightly over this source of material. In fact, such sources should be exhausted before a more extended search for evidence is entered upon. Furthermore, a discussion of the subject with these well-informed people will beget new ideas and give a breadth of view regarding the subject which will be helpful in subsequent investigation.

3. Personal letters.

After the student has gained some knowledge regarding the most eminent authorities on the subject under discussion, he may feel at liberty to address some of them with a personal letter. This letter should be brief and to the point, stating just what is wanted. If questions are asked they should be brief and plain. The use to which the reply is to be put should be stated.

If the question is one with which national, state, or municipal officials are concerned personal letters may be written to them. If this is carefully done in accordance with the foregoing suggestions, a prompt reply is almost always assured. An opinion expressed in a personal letter from a national or state official, or any information given by him, is usually looked upon with considerable respect.

Still another class of men to whom personal letters may be written with profit consists of the well known officials of large sectional and national associations such as the American Bar Association, the American Federation of Labor, and the National Manufacturers Association. The officials of these and other similar associations are usually well pleased to be consulted upon the questions in which their opinions are regarded with respect. Although the debater should not carry on a correspondence campaign for material, yet he should not hesitate to write for facts and opinions which are of vital importance.

4. Current literature.

Current literature offers the most prolific field of information on subjects of general interest. This source of material is always available to the debater. His first efforts should be directed to finding out what this field contains that bears directly on the subject. With this object in view he should consult The Reader’s Guide, Poole’s Index and the Annual Library Index. Here he will find all the important magazine articles that have been written on any subject. The title of the article, the name of the writer, the magazine in which it is found, together with the date, volume, and page, are given exactly. This opens a great storehouse of information. In consulting these guides to periodic literature the investigator should exercise his ingenuity as well as his imagination in determining under what topics he will find his material listed. In investigating the proposition “Resolved, that Congress should immediately provide for an increase in the navy,” the student must not be content with merely looking up the articles found listed in the guide under the topic “Navy.” He should also look under “Battleships”, “Warships”, “Dreadnoughts”, “International Peace”, “Foreign Affairs”, etc. At the end of these lists cross-references to related subjects will be found and these should also be consulted.