Читать книгу The theory and practice of argumentation and debate - Victor Alvin Ketcham - Страница 15

If the first two requirements in regard to the choosing of a subject are observed it is not probable that the question will be undebatable. However, since it is always advisable to keep as far as may be from one-sided questions, it is well to give this requirement some consideration.

In the first place, the question must not be obviously true or obviously false. The clearest examples of subjects objectionable because obviously true are found in geometry. It is plain that an intelligent debate cannot be held on the proposition, “Resolved, that the sum of the three angles of a triangle is always equal to two right angles.” Equally useless from the standpoint of argumentation is it to dispute that “All men are mortal,” that “Huxley was a great scientist,” or that “Health is more desirable than sickness.” Nevertheless questions just as obvious as these are sometimes debated because their real character is concealed under cover of confused language. The following question is a good example of this, “Resolved, that breach of trust in high office is reprehensible.” A moment’s thought will convince the reader that such a proposition is not debatable because obviously true. On the other hand propositions which are obviously false are sometimes worded so as to have an appearance of validity. Such is the following, “Resolved, that the only way to benefit humanity is to destroy the trusts.” To prove this proposition it is necessary to show that education, religion, and commerce cannot be made to benefit humanity. The proposition is not debatable because it is obviously false.

In the second place, the question must be one which is capable of approximate proof. It is not debatable if it cannot be proved approximately true or false. The debater must be able, by means of reasoning based upon the facts of the case, to arrive at a conclusion either for or against the proposition. To make this possible, there must be a common standard of comparison. This common standard does not exist in the proposition “Resolved, that the lawyer is of more use to society than the doctor,” because their work is entirely unlike and both are necessary to the well-being of modern society. On the other hand it does exist in the proposition “Resolved, that Federal control of life insurance companies is preferable to State control.” This question hinges on the comparative efficiency of the two means of control, namely,—Federal and State, both of which are governmental in character. Therefore a common standard of comparison exists which enables the debater to show why one or the other method should be adopted.

Thus far we have dealt with the subject-matter of the proposition and have seen that it must meet the three foregoing requirements. We must now turn our attention to the phrasing of this subject in such a way that it will form a suitable proposition for debate.

SUMMARY OF REQUIREMENTS FOR THE SUBJECT-MATTER OF A PROPOSITION

1. The subject must be interesting.

2. Subjects for first practice should be those of which the debater has a general knowledge.

3. The subject must be debatable.