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Distinguo

Dorothy L. Sayers, 1893-1957 Wisdom on the subject of education, from Dorothy Sayers. One:
A glib speaker in the Brains Trust once entertained his audience (and reduced the late Charles Williams to helpless rage) by asserting that in the Middle Ages it was a matter of faith to know how many archangels could dance on the point of a needle. I need not say, I hope, that it never was a "matter of faith"; it was simply a debating exercise, whose set subject was the nature of angelic substance: were angels material, and if so, did they occupy space? The answer usually adjudged correct is, I believe, that angels are pure intelligences; not material, but limited, so that they may have location in space but not extension. An analogy might be drawn from human thought, which is similarly non-material and similarly limited. Thus, if your thought is concentrated upon one thing - say, the point of a needle - it is located there in the sense that it is not elsewhere; but although it is "there," it occupies no space there, and there is nothing to prevent an infinite number of different people's thoughts being concentrated upon the same needle-point at the same time. The proper subject of the argument is thus seen to be the distinction between location and extension in space; the matter on which the argument is exercised happens to be the nature of angels (although, as we have seen, it might equally well have been something else; the practical lesson to be drawn from the argument is not to use words like "there" in a loose and unscientific way, without specifying whether you mean "located there" or "occupying space there." Scorn in plenty has been poured out upon the mediaeval passion for hair-splitting; but when we look at the shameless abuse made, in print and on the platform, of controversial expressions with shifting and ambiguous connotations, we may feel it in our hearts to wish that every reader and hearer had been so defensively armored by his education as to be able to cry: Distinguo.
Two:
The disrepute into which Formal Logic has fallen is entirely unjustified; and its neglect is the root cause of nearly all those disquieting symptoms which we have noted in the modern intellectual constitution. Logic has been discredited, partly because we have come to suppose that we are conditioned almost entirely by the intuitive and the unconscious. There is no time to argue whether this is true; I will simply observe that to neglect the proper training of the reason is the best possible way to make it true. Another cause for the disfavor into which Logic has fallen is the belief that it is entirely based upon universal assumptions that are either unprovable or tautological. This is not true. Not all universal propositions are of this kind. But even if they were, it would make no difference, since every syllogism whose major premise is in the form "All A is B" can be recast in hypothetical form. Logic is the art of arguing correctly: "If A, then B." The method is not invalidated by the hypothetical nature of A. Indeed, the practical utility of Formal Logic today lies not so much in the establishment of positive conclusions as in the prompt detection and exposure of invalid inference.
Three:
Wherever the matter for Dialectic is found, it is, of course, highly important that attention should be focused upon the beauty and economy of a fine demonstration or a well-turned argument, lest veneration should wholly die. Criticism must not be merely destructive; though at the same time both teacher and pupils must be ready to detect fallacy, slipshod reasoning, ambiguity, irrelevance, and redundancy, and to pounce upon them like rats. This is the moment when precis-writing may be usefully undertaken; together with such exercises as the writing of an essay, and the reduction of it, when written, by 25 or 50 percent. It will, doubtless, be objected that to encourage young persons at the Pert age to browbeat, correct, and argue with their elders will render them perfectly intolerable. My answer is that children of that age are intolerable anyhow; and that their natural argumentativeness may just as well be canalized to good purpose as allowed to run away into the sands. It may, indeed, be rather less obtrusive at home if it is disciplined in school; and anyhow, elders who have abandoned the wholesome principle that children should be seen and not heard have no one to blame but themselves.
I can't help but wonder what kind of effects such methods would have on two industries in particular: advertising, and politics.

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