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FALLACY (Lat. fall-ax, apt to mislead)

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Originally appearing in Volume V10, Page 154 of the 1911 Encyclopedia Britannica.
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FALLACY (See also:Lat. fall-ax, See also:apt to mislead)  , the See also:term given generally to any mistaken statement used in See also:argument; in See also:Logic, technically, an argument which violates the See also:laws of correct demonstration . An argument may be fallacious in Natter (i.e, misstatement of facts), in wording (i.e. wrong use of I 5 3 words), or in the See also:process of inference . Fallacies have, therefore, been classified as: I . Material, IL Verbal, III . Logical or Formal; II. and III. are often included under the See also:general description Logical, and in scholastic phraseology, following See also:Aristotle, are called fallacies in dictione or in voce, as opposed to material fallacies in re or extra dictionem . , I . Material.—The. See also:classification widely adopted by See also:modern logicians and based on that of Aristotle, See also:Organon (Sophistici elenchi), is as follows:—(r) See also:Fallacy of See also:Accident, i.e. arguing erroneously from a general See also:rule to a particular See also:case, without proper regard to particular conditions which vitiate the application of the general rule; e.g. if manhood See also:suffrage be the See also:law, arguing that a criminal or a lunatic must, therefore, have a See also:vote; (2) Converse Fallacy of Accident, i.e. arguing from a See also:special case to a general rule; (3) Irrelevant Conclusion, or Ignoratio Elenchi, wherein, instead of proving the fact in dispute, the arguer seeks to gain his point by diverting See also:attention to some extraneous fact (as in the legal See also:story of " No case . Abuse the See also:plaintiff's See also:attorney ") . Under this See also:head come the so-called argumentum (a) ad hominem, (b) ad populum, (c) ad baculum, (d) ad verecundiam, See also:common in See also:platform See also:oratory, in which the See also:speaker obscures the real issue by appealing to his See also:audience on the grounds of (a) purely See also:personal considerations, (b) popular sentiment, (c) fear, (d) conventional propriety . This fallacy has been illustrated by ethical or theological arguments wherein the fear of See also:punishment is subtly substituted for abstract right as the See also:sanction of moral See also:obligation . (4) "Petitio principii (begging the question) or Circulus in probando (arguing in a circle), which consists in demonstrating a conclusion by means of premises which pre-suppose that conclusion . See also:Jeremy See also:Bentham points out that this fallacy may lurk in a single word, especially in an epithet, e.g. if a measure were condemned simply on the ground that it is alleged to be " un-See also:English "; (5) Fallacy of the Consequent, really a See also:species of (3), wherein a conclusion, is See also:drawn from premises which do not really support it; (6) Fallacy of False Cause, or Non Sequitur( it does not follow "), wherein one thing is in-correctly assumed as the cause of another, as when the ancients attributed a public calamity to a meteorological phenomenon; (7) Fallacy of Many Questions (Plurium Interrogationum), wherein several questions are improperly grouped in the See also:form of one, and a See also:direct categorical See also:answer is demanded, e.g. if a prosecuting counsel asked the prisoner " What See also:time was it when you met this See also:man ?

" with the intention of eliciting the tacit See also:

admission that such a See also:meeting had taken See also:place . II . Verbal Fallacies are those in which a false conclusion is obtained by improper or ambiguous use of words . They are generally classified as follows . (1) Equivocation consists in employing the same word in two or more senses, e.g. in a See also:syllogism, the See also:middle term being used in one sense in the See also:major and another in the See also:minor premise, so that in fact there are four not three terms (" All See also:fair things are See also:honourable; This woman is fair; therefore this woman is honourable," the second " fair " being in reference to complexion)•.., (2) See also:Amphibology is the result of See also:ambiguity of grammatical structure, e.g. of the position of the adverb " only " in careless writers (" Be only said that," in which See also:sentence, as experience shows, the adverb has been intended to qualify any one of the other three words) . (3) See also:Composition, a species of (I), which results from the confused use of collective terms (" The angles of a triangle are less than two right angles " might refer to the angles separately or added together) . (4) See also:Division, the converse ,of the preceding, which consists in employing the middle term distributively in the minor and collectively in the major premise . (5) See also:Accent, which occurs only in speaking and consists of emphasizing the wrong word in a sentence (" He is a fairly See also:good pianist," according to the emphasis on the words, may imply praise of a beginner's progress, or an See also:expert's depreciation of a popular See also:hero, or it may imply that the See also:person in question is a deplorable violinist) . (6) Figure of Speech, the confusion between the metaphorical and See also:ordinary uses of a word or phrase . (a) fallacy of Four Terms (Qualernio terminorum); (b) of Undistributed Middle; (c) of Illicit process of the major or the minor term; (d) of Negative Premises . Of other classifications of Fallacies in general the most famous are those of See also:Francis See also:Bacon and J . S .

See also:

Mill . Bacon (Novum organum, Aph . 33, 38 sqq.) divided fallacies into four Idola (Idols, i.e . False Appearances), which summarize the various kinds of mistakes to which the human See also:intellect is prone (see BACON, FRANCIS) . With these should be compared the Offendicula of See also:Roger Bacon, contained in the See also:Opus maius, pt. i . (see BACON, ROGER) . J . S . Mill discussed the subject in See also:book v. of his Logic, and Jeremy Bentham's Book of Fallacies (1824) contains valuable remarks . See Rd . Whateley's Logic, bk. v.; A. de See also:Morgan, Formal Logic (1847) ; A . See also:Sidgwick, Fallacies (1883) and other See also:text-books .

See also See also:

article Logic, and for fallacies of See also:Induction, see INDUCTION .

End of Article: FALLACY (Lat. fall-ax, apt to mislead)
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