Informal Fallacy PAPER- FORMAL LOGIC COURSE- BA (HONS) 1 ST YR
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6.5 Rules for Evaluating Syllogisms
6.5 Rules for Evaluating Syllogisms Comment: Venn Diagrams provide a clear semantics for categorical statements that yields a method for determining validity. Prior to their discovery, categorical syllogisms were evaluated by a set of rules, some of which are more or less semantic in character, others of which are entirely syntactic. We will study those rules in this section. Rule 1: A valid standard form categorical syllogism must contain exactly three terms, and each term must be used with the same meaning throughout the argument. Comment: A fallacy of equivocation occurs if a term is used with more than one meaning in a categorical syllogism, e.g., Some good speakers are woofers. All politicians are good speakers. So, some politicians are woofers. In the first premise, “speakers” refers to an electronic device. In the second, it refers to a subclass of human beings. Definition (sorta): A term is distributed in a statement if the statement “says something” about every member of the class that the term denotes. A term is undistributed in a statement if it is not distributed in it. Comment: To say that a statement “says something” about every member of a class is to say that, if you know the statement is true, you can legitimately infer something nontrivial about any arbitrary member of the class. 1 The subject term (but not the predicate term) is distributed in an A statement. Example 1 All dogs are mammals says of each dog that it is a mammal. It does not say anything about all mammals. Comment: Thus, if I know that “All dogs are mammals” is true, then if I am told that Fido is a dog, I can legitimately infer that Fido is a mammal. -
Western Logic Formal & Informal Fallacy Types of 6 Fallacies
9/17/2021 Western Logic Formal & Informal Fallacy Types of 6 Fallacies- Examrace Examrace Western Logic Formal & Informal Fallacy Types of 6 Fallacies Get unlimited access to the best preparation resource for competitive exams : get questions, notes, tests, video lectures and more- for all subjects of your exam. Western Logic - Formal & Informal Fallacy: Types of 6 Fallacies (Philosophy) Fallacy When an argument fails to support its conclusion, that argument is termed as fallacious in nature. A fallacious argument is hence an erroneous argument. In other words, any error or mistake in an argument leads to a fallacy. So, the definition of fallacy is any argument which although seems correct but has an error committed in its reasoning. Hence, a fallacy is an error; a fallacious argument is an argument which has erroneous reasoning. In the words of Frege, the analytical philosopher, “it is a logician՚s task to identify the pitfalls in language.” Hence, logicians are concerned with the task of identifying fallacious arguments in logic which are also called as incorrect or invalid arguments. There are numerous fallacies but they are classified under two main heads; Formal Fallacies Informal Fallacies Formal Fallacies Formal fallacies are those mistakes or errors which occur in the form of the argument. In other words, formal fallacies concern themselves with the form or the structure of the argument. Formal fallacies are present when there is a structural error in a deductive argument. It is important to note that formal fallacies always occur in a deductive argument. There are of six types; Fallacy of four terms: A valid syllogism must contain three terms, each of which should be used in the same sense throughout; else it is a fallacy of four terms. -
Constantinos Georgiou Athanasopoulos
Constantinos Athanasopoulos, 1 Constantinos Georgiou Athanasopoulos Supervisor Mary Haight Title The Metaphysics of Intentionality: A Study of Intentionality focused on Sartre's and Wittgenstein's Philosophy of Mind and Language. Submission for PhD Department of Philosophy University of Glasgow JULY 1995 ProQuest Number: 13818785 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a com plete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. uest ProQuest 13818785 Published by ProQuest LLC(2018). Copyright of the Dissertation is held by the Author. All rights reserved. This work is protected against unauthorized copying under Title 17, United States C ode Microform Edition © ProQuest LLC. ProQuest LLC. 789 East Eisenhower Parkway P.O. Box 1346 Ann Arbor, Ml 48106- 1346 GLASGOW UKVERSITT LIBRARY Constantinos Athanasopoulos, 2 ABSTRACT With this Thesis an attempt is made at charting the area of the Metaphysics of Intentionality, based mainly on the Philosophy of Jean-Paul Sartre. A Philosophical Analysis and an Evaluation o f Sartre’s Arguments are provided, and Sartre’s Theory of Intentionality is supported by recent commentaries on the work of Ludwig Wittgenstein. Sartre’s Theory of Intentionality is proposed, with few improvements by the author, as the only modem theory of the mind that can oppose effectively the advance of AI and physicalist reductivist attempts in Philosophy of Mind and Language. Discussion includes Sartre’s critique of Husserl, the relation of Sartre’s Theory of Intentionality to Realism, its applicability in the Theory of the Emotions, and recent theories of Intentionality such as Mohanty’s, Aquilla’s, Searle’s, and Harney’s. -
CHAPTER XXX. of Fallacies. Section 827. After Examining the Conditions on Which Correct Thoughts Depend, It Is Expedient to Clas
CHAPTER XXX. Of Fallacies. Section 827. After examining the conditions on which correct thoughts depend, it is expedient to classify some of the most familiar forms of error. It is by the treatment of the Fallacies that logic chiefly vindicates its claim to be considered a practical rather than a speculative science. To explain and give a name to fallacies is like setting up so many sign-posts on the various turns which it is possible to take off the road of truth. Section 828. By a fallacy is meant a piece of reasoning which appears to establish a conclusion without really doing so. The term applies both to the legitimate deduction of a conclusion from false premisses and to the illegitimate deduction of a conclusion from any premisses. There are errors incidental to conception and judgement, which might well be brought under the name; but the fallacies with which we shall concern ourselves are confined to errors connected with inference. Section 829. When any inference leads to a false conclusion, the error may have arisen either in the thought itself or in the signs by which the thought is conveyed. The main sources of fallacy then are confined to two-- (1) thought, (2) language. Section 830. This is the basis of Aristotle's division of fallacies, which has not yet been superseded. Fallacies, according to him, are either in the language or outside of it. Outside of language there is no source of error but thought. For things themselves do not deceive us, but error arises owing to a misinterpretation of things by the mind. -
Proving Propositional Tautologies in a Natural Dialogue
Fundamenta Informaticae xxx (2013) 1–16 1 DOI 10.3233/FI-2013-xx IOS Press Proving Propositional Tautologies in a Natural Dialogue Olena Yaskorska Institute of Philosophy and Sociology, Polish Academy of Sciences, Warsaw, Poland Katarzyna Budzynska Institute of Philosophy and Sociology, Polish Academy of Sciences, Warsaw, Poland Magdalena Kacprzak Department of Computer Science, Bialystok University of Technology, Bialystok, Poland Abstract. The paper proposes a dialogue system LND which brings together and unifies two tradi- tions in studying dialogue as a game: the dialogical logic introduced by Lorenzen; and persuasion dialogue games as specified by Prakken. The first approach allows the representation of formal di- alogues in which the validity of argument is the topic discussed. The second tradition has focused on natural dialogues examining, e.g., informal fallacies typical in real-life communication. Our goal is to unite these two approaches in order to allow communicating agents to benefit from the advan- tages of both, i.e., to equip them with the ability not only to persuade each other about facts, but also to prove that a formula used in an argument is a classical propositional tautology. To this end, we propose a new description of the dialogical logic which meets the requirements of Prakken’s generic specification for natural dialogues, and we introduce rules allowing to embed a formal dialogue in a natural one. We also show the correspondence result between the original and the new version of the dialogical logic, i.e., we show that a winning strategy for a proponent in the original version of the dialogical logic means a winning strategy for a proponent in the new version, and conversely. -
35 Fallacies
THIRTY-TWO COMMON FALLACIES EXPLAINED L. VAN WARREN Introduction If you watch TV, engage in debate, logic, or politics you have encountered the fallacies of: Bandwagon – "Everybody is doing it". Ad Hominum – "Attack the person instead of the argument". Celebrity – "The person is famous, it must be true". If you have studied how magicians ply their trade, you may be familiar with: Sleight - The use of dexterity or cunning, esp. to deceive. Feint - Make a deceptive or distracting movement. Misdirection - To direct wrongly. Deception - To cause to believe what is not true; mislead. Fallacious systems of reasoning pervade marketing, advertising and sales. "Get Rich Quick", phone card & real estate scams, pyramid schemes, chain letters, the list goes on. Because fallacy is common, you might want to recognize them. There is no world as vulnerable to fallacy as the religious world. Because there is no direct measure of whether a statement is factual, best practices of reasoning are replaced be replaced by "logical drift". Those who are political or religious should be aware of their vulnerability to, and exportation of, fallacy. The film, "Roshomon", by the Japanese director Akira Kurisawa, is an excellent study in fallacy. List of Fallacies BLACK-AND-WHITE Classifying a middle point between extremes as one of the extremes. Example: "You are either a conservative or a liberal" AD BACULUM Using force to gain acceptance of the argument. Example: "Convert or Perish" AD HOMINEM Attacking the person instead of their argument. Example: "John is inferior, he has blue eyes" AD IGNORANTIAM Arguing something is true because it hasn't been proven false. -
Philosophy of Physical Activity Education (Including Educational Sport)
eBook Philosophy of Physical Activity Education (Including Educational Sport) by EARLEPh.D., F. LL.D., ZEIGLER D.Sc. PHILOSOPHY OF PHYSICAL ACTIVITY EDUCATION (INCLUDING EDUCATIONAL SPORT) Earle F. Zeigler Ph.D., LL.D., D.Sc., FAAKPE Faculty of Kinesiology The University of Western Ontario London, Canada (This version is as an e-book) 1 PLEASE LEAVE THIS PAGE EMPTY FOR PUBLICATION DATA 2 DEDICATION This book is dedicated to the following men and women with whom I worked very closely in this aspect of our work at one time or another from 1956 on while employed at The University of Michigan, Ann Arbor; the University of Illinois, U-C; and The University of Western Ontario, London, Canada: Susan Cooke, (Western Ontario, CA); John A. Daly (Illinois, U-C); Francis W. Keenan, (Illinois, U-C); Robert G. Osterhoudt (Illinois, U-C); George Patrick (Illinois, U-C); Kathleen Pearson (Illinois, U-C); Sean Seaman (Western Ontario, CA; Danny Rosenberg (Western Ontario, CA); Debra Shogan (Western Ontario, CA); Peter Spencer-Kraus (Illinois, UC) ACKNOWLEDGEMENTS In the mid-1960s, Dr. Paul Weiss, Heffer Professor of Philosophy, Catholic University of America, Washington, DC, offered wise words of counsel to me on numerous occasions, as did Prof. Dr. Hans Lenk, a "world scholar" from the University of Karlsruhe, Germany, who has been a friend and colleague for whom I have the greatest of admiration. Dr. Warren Fraleigh, SUNY at Brockport, and Dr. Scott Kretchmar. of The Pennsylvania State University have been colleagues, scholars, and friends who haven't forgotten their roots in the physical education profession. -
From Logic to Rhetoric: a Contextualized Pedagogy for Fallacies
Current Issue From the Editors Weblog Editorial Board Editorial Policy Submissions Archives Accessibility Search Composition Forum 32, Fall 2015 From Logic to Rhetoric: A Contextualized Pedagogy for Fallacies Anne-Marie Womack Abstract: This article reenvisions fallacies for composition classrooms by situating them within rhetorical practices. Fallacies are not formal errors in logic but rather persuasive failures in rhetoric. I argue fallacies are directly linked to successful rhetorical strategies and pose the visual organizer of the Venn diagram to demonstrate that claims can achieve both success and failure based on audience and context. For example, strong analogy overlaps false analogy and useful appeal to pathos overlaps manipulative emotional appeal. To advance this argument, I examine recent changes in fallacies theory, critique a-rhetorical textbook approaches, contextualize fallacies within the history and theory of rhetoric, and describe a methodology for rhetorically reclaiming these terms. Today, fallacy instruction in the teaching of written argument largely follows two paths: teachers elevate fallacies as almost mathematical formulas for errors or exclude them because they don’t fit into rhetorical curriculum. Both responses place fallacies outside the realm of rhetorical inquiry. Fallacies, though, are not as clear-cut as the current practice of spotting them might suggest. Instead, they rely on the rhetorical situation. Just as it is an argument to create a fallacy, it is an argument to name a fallacy. This article describes an approach in which students must justify naming claims as successful strategies and/or fallacies, a process that demands writing about contexts and audiences rather than simply linking terms to obviously weak statements. -
False Dilemma Wikipedia Contents
False dilemma Wikipedia Contents 1 False dilemma 1 1.1 Examples ............................................... 1 1.1.1 Morton's fork ......................................... 1 1.1.2 False choice .......................................... 2 1.1.3 Black-and-white thinking ................................... 2 1.2 See also ................................................ 2 1.3 References ............................................... 3 1.4 External links ............................................. 3 2 Affirmative action 4 2.1 Origins ................................................. 4 2.2 Women ................................................ 4 2.3 Quotas ................................................. 5 2.4 National approaches .......................................... 5 2.4.1 Africa ............................................ 5 2.4.2 Asia .............................................. 7 2.4.3 Europe ............................................ 8 2.4.4 North America ........................................ 10 2.4.5 Oceania ............................................ 11 2.4.6 South America ........................................ 11 2.5 International organizations ...................................... 11 2.5.1 United Nations ........................................ 12 2.6 Support ................................................ 12 2.6.1 Polls .............................................. 12 2.7 Criticism ............................................... 12 2.7.1 Mismatching ......................................... 13 2.8 See also -
Logic and Contemporary Rhetoric
How happy are the astrologers, who are It ain’t so much the things we don’t believed if they tell one truth to a know that get us into trouble. It’s the hundred lies, while other people lose all things we know that ain’t so. credit if they tell one lie to a hundred —Artemus Ward truths. —Francesco Guicciardini Chapter 4 FALLACIOUS REASONING—2 Most instances of the fallacies discussed in the previous chapter fall into the broad fallacy categories questionable premise or suppressed evidence. Most of the fallacies to be discussed in this and the next chapter belong to the genus invalid inference. 1. AD HOMINEM ARGUMENT There is a famous and perhaps apocryphal story lawyers like to tell that nicely captures the flavor of this fallacy. In Great Britain, the practice of law is divided between solici- tors, who prepare cases for trial, and barristers, who argue the cases in court. The story concerns a particular barrister who, depending on the solicitor to prepare his case, arrived in court with no prior knowledge of the case he was to plead, where he found an exceedingly thin brief, which when opened contained just one note: “No case; abuse the plaintiff’s attorney.” If the barrister did as instructed, he was guilty of arguing ad hominem—of attacking his opponent rather than his opponent’s evidence and argu- ments. (An ad hominem argument, literally, is an argument “to the person.”) Both liberals and conservatives are the butt of this fallacy much too often. Not long after Barack Obama was elected to the Senate, Rush Limbaugh repeatedly referred to him as “Obama Osama” when criticizing the senator and the Democrats in general. -
Fitting Words
FITTING WORDS Answer Key SAMPLE James B. Nance, Fitting Words: Classical Rhetoric for the Christian Student: Answer Key Copyright ©2016 by James B. Nance Version 1.0.0 Published by Roman Roads Media 739 S Hayes Street, Moscow, Idaho 83843 509-592-4548 | www.romanroadsmedia.com Cover design concept by Mark Beauchamp; adapted by Daniel Foucachon and Valerie Anne Bost. Cover illustration by Mark Beauchamp; adapted by George Harrell. Interior illustration by George Harrell. Interior design by Valerie Anne Bost. Printed in the United States of America. Unless otherwise indicated, Scripture quotations are from the New King James Version of the Bible, ©1979, 1980, 1982, 1984, 1988 by Thomas Nelson, Inc., Nashville, Tennessee. Scripture quotations marked NIV are from the the Holy Bible, New International Version®, NIV® Copyright © 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. Scipture quotations marked ESV are from the English Standard Version copyright ©2001 by Crossway Bibles, a division of Good News Publishers. Used by permission. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical, photocopy, recording, or otherwise, without prior permission of the author, except as provided by USA copyright law. Library of Congress Cataloging-in-Publication Data available on www.romanroadsmedia.com. ISBN-13: 978-1-944482-03-9 ISBN-10:SAMPLE 1-944482-03-2 16 17 18 19 20 21 22 23 10 9 8 7 6 5 4 3 2 1 FITTING WORDS Classical Rhetoric for the Christian Student Answer Key JAMES B. -
Indiscernible Logic: Using the Logical Fallacies of the Illicit Major Term and the Illicit Minor Term As Litigation Tools
WLR_47-1_RICE (FINAL FORMAT) 10/28/2010 3:35:39 PM INDISCERNIBLE LOGIC: USING THE LOGICAL FALLACIES OF THE ILLICIT MAJOR TERM AND THE ILLICIT MINOR TERM AS LITIGATION TOOLS ∗ STEPHEN M. RICE I. INTRODUCTION Baseball, like litigation, is at once elegant in its simplicity and infinite in its complexities and variations. As a result of its complexities, baseball, like litigation, is subject to an infinite number of potential outcomes. Both baseball and litigation are complex systems, managed by specialized sets of rules. However, the results of baseball games, like the results of litigation, turn on a series of indiscernible, seemingly invisible, rules. These indiscernible rules are essential to success in baseball, in the same way the rules of philosophic logic are essential to success in litigation. This article will evaluate one of the philosophical rules of logic;1 demonstrate how it is easily violated without notice, resulting in a logical fallacy known as the Fallacy of the Illicit Major or Minor Term,2 chronicle how courts have identified this logical fallacy and used it to evaluate legal arguments;3 and describe how essential this rule and the fallacy that follows its breach is to essential effective advocacy. However, because many lawyers are unfamiliar with philosophical logic, or why it is important, this article begins with a story about a familiar subject that is, in many ways, like the rules of philosophic logic: the game of baseball. ∗ Stephen M. Rice is an Assistant Professor of Law, Liberty University School of Law. I appreciate the efforts of my research assistant, Ms.