Practical Argumentation Part 14

B. Table board costs less.

C. Amus.e.m.e.nt places are less numerous.

Under the "therefore" method, the proof precedes the statement being established; the connectives are _hence_ and _therefore_.

The previous argument arranged in this form would read as follows:--

A. Since room rent is cheaper at the country college than at the city college, and

B. Since table board costs less, and

C. Since amus.e.m.e.nt places are less numerous, _therefore_.

I. Expenses at a country college are less than at a city college.

The student should always use the "because" method of arrangement. It is preferable to the "therefore" method since it affords a much easier apprehension of the argument advanced. If the reader of the brief has the conclusion in his mind at the very start, he can test the strength and adequacy of the proof very quickly, and can, perhaps, the first time he reads the argument form an opinion as to its worth. But he will almost always have difficulty in grasping the significance of evidence and reasoning before he knows what the proof is expected to prove. The "therefore" method usually obliges a careful reasoner, after finally reaching the conclusion, to go over the whole proof a second time.

To a.s.sist the student in carrying out the proper arrangement of his proof, two rules have been formulated. One rule deals with main headings, the headings marked with the Roman numerals; the other deals with subordinate headings.

Rule IX. _Phrase each princ.i.p.al statement in the discussion so that it will read as a reason for the truth or the falsity of the proposition_.

Rule X. _Phrase each subordinate statement in the discussion so that it will read as a reason for the truth of the statement to which it is subordinate. The connectives to be used are: as, because, for, and since_.

In connection with the first of these rules, notice that princ.i.p.al headings read as reasons for the truth or the falsity of the proposition. Obviously they read as reasons for the truth if the brief is on the affirmative side, and for the falsity if the brief is on the negative side. Headings and subheadings should always be supported, not demolished.

The error of making unsupported statements in a complete argument has already been discussed. a.s.sertion in a brief is equally faulty. To insure belief, all statements must rest ultimately either upon the testimony of witnesses or upon statements admitted to be true.

Notice how unconvincing is the following portion of a brief:--

Proposition--American cities should own and operate all street-car lines within their limits.

I. The present system of operating street-car lines is efficient, for

A. The street-car service in the United States is the best in the world.

B. Street-car fare in the United States is remarkably low.

The insertion of testimony, however, to substantiate A and B turns this bit of brief into excellent proof.

I. The present system of operating street-car lines is efficient, for

A. The street-car service in the United States is the best in the world, because

1. It is best in respect to extent, since

a. James W. Garner says that England has less than a quarter of the street-car facilities found in the United States. (Dial, Feb. 1908, p. 20.)

b. In 1902, two hundred and ninety-five communities in the United Kingdom of from 8,000 to 25,000 inhabitants were without street cars; while in the United States there were only twenty-one such communities.

(Munic.i.p.al and Private Operation of Public Utilities, W. J. Clark, Vol. I, p. 445.)

2. It is best in regard to equipment and accommodation, since

a. The cars are the best equipped in the world. (Ibid.)

b. The cars are run with shorter intervals between them than anywhere else in the world. (Ibid.)

B. The fare in the United States is remarkably low, because

1. Although the fare in Glasgow, a leading exponent of munic.i.p.al owners.h.i.+p, is but twopence, yet it will carry one only eight miles; but five cents in New York will carry one fifty miles.

Rule XI. _Make no unsupported statements unless they are generally admitted to be true_.

It has already been shown that the arguer must reveal to his audience the sources from which he gathered his evidence. If he gained certain information from magazines, he should state definitely the name, the volume, and the page; if he gained his information elsewhere, he should be equally explicit. Since this knowledge of the source of the evidence is essential to the success of the proof, a statement of the sources is a part of the work of conviction. Accordingly, these sources must be stated in the brief as well as in the expanded argument. Thus the rule:--

Rule XII. _After all evidence state in parentheses the source from which it came_.

In addition to establis.h.i.+ng the side of the proposition which it advocates, a good brief almost invariably refutes the main arguments of the opposite side. The way in which this refutation is expressed is very important. A brief on the affirmative side of the proposition, "_Resolved_, That the Panama ca.n.a.l should be built at sea-level,"

would be weak and ludicrous, if, when answering the argument for the negative that the cost of a sea-level ca.n.a.l would be enormous, it should contain the following reasoning:--

The Panama Ca.n.a.l should be built at sea-level, (for) I. The cost would not be much greater than for a lock ca.n.a.l.

One might think from this statement that the drawer of the brief considered the contention that the sea-level type would cost a little though not much more than the other type, a positive argument in favor of the sea-level ca.n.a.l. In reality it is nothing of the sort. The arguer is merely trying to destroy his opponent's argument to the effect that expense is an obstacle in the way of the sea-level type.

This refutation should be expressed in such a manner as to show that it is refutation and not positive proof. It might well read something like this:--

The Panama Ca.n.a.l should be built at sea-level, (for) I. The contention of the negative that a sea-level ca.n.a.l would cost enormously more than a lock-ca.n.a.l is unsound, since,

A. Etc.

Notice that this form of refutation states clearly the argument to be answered. No doubt can arise from such a statement as to the direction the argument is taking; no confusion can occur between refutation and positive proof. Hence the rule:--

Rule XIII. _Phrase refutation so that the argument to be answered is clearly stated_.

THE CONCLUSION.

As there is but one rule for brief-drawing that applies to the conclusion, it may well be given at this point. The purpose and the value of this rule are so apparent that no explanation is necessary.

Rule XIV. _Put into the conclusion a summary of the essential points established in the discussion_.

RULES FOR BRIEF-DRAWING.

GENERAL RULES.

I. _Divide the brief into three parts, and mark them respectively, Introduction, Discussion, and Conclusion_.

II. _Express each idea in the brief in the form of a complete statement_.

III. _Make in each statement only a single a.s.sertion_.