C H a P T E R 2 Claims, Issues, and Arguments
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Logical Reasoning
Chapter 2 Logical Reasoning All human activities are conducted following logical reasoning. Most of the time we apply logic unconsciously, but there is always some logic ingrained in the decisions we make in order to con- duct day-to-day life. Unfortunately we also do sometimes think illogically or engage in bad reasoning. Since science is based on logical thinking, one has to learn how to reason logically. The discipline of logic is the systematization of reasoning. It explicitly articulates principles of good reasoning, and system- atizes them. Equipped with this knowledge, we can distinguish between good reasoning and bad reasoning, and can develop our own reasoning capacity. Philosophers have shown that logical reasoning can be broadly divided into two categories—inductive, and deductive. Suppose you are going out of your home, and upon seeing a cloudy sky, you take an umbrella along. What was the logic behind this commonplace action? It is that, you have seen from your childhood that the sky becomes cloudy before it rains. You have seen it once, twice, thrice, and then your mind has con- structed the link “If there is dark cloud in the sky, it may rain”. This is an example of inductive logic, where we reach a general conclusion by repeated observation of particular events. The repeated occurrence of a particular truth leads you to reach a general truth. 2 Chapter 2. Logical Reasoning What do you do next? On a particular day, if you see dark cloud in the sky, you think ‘today it may rain’. You take an um- brella along. -
Logical Fallacies Moorpark College Writing Center
Logical Fallacies Moorpark College Writing Center Ad hominem (Argument to the person): Attacking the person making the argument rather than the argument itself. We would take her position on child abuse more seriously if she weren’t so rude to the press. Ad populum appeal (appeal to the public): Draws on whatever people value such as nationality, religion, family. A vote for Joe Smith is a vote for the flag. Alleged certainty: Presents something as certain that is open to debate. Everyone knows that… Obviously, It is obvious that… Clearly, It is common knowledge that… Certainly, Ambiguity and equivocation: Statements that can be interpreted in more than one way. Q: Is she doing a good job? A: She is performing as expected. Appeal to fear: Uses scare tactics instead of legitimate evidence. Anyone who stages a protest against the government must be a terrorist; therefore, we must outlaw protests. Appeal to ignorance: Tries to make an incorrect argument based on the claim never having been proven false. Because no one has proven that food X does not cause cancer, we can assume that it is safe. Appeal to pity: Attempts to arouse sympathy rather than persuade with substantial evidence. He embezzled a million dollars, but his wife had just died and his child needed surgery. Begging the question/Circular Logic: Proof simply offers another version of the question itself. Wrestling is dangerous because it is unsafe. Card stacking: Ignores evidence from the one side while mounting evidence in favor of the other side. Users of hearty glue say that it works great! (What is missing: How many users? Great compared to what?) I should be allowed to go to the party because I did my math homework, I have a ride there and back, and it’s at my friend Jim’s house. -
TBKOB DEC TALENT DECK 130121ALT Copy
Legal Disclaimer. This document and the information contained herein are provided to potential investors or Screen bodies by the (“the Company”) regarding he proposed project The Beast kind of Beautiful. It is confidential and proprietary to the company and is intended only for the persons to whom it is transmitted by the Company or its representatives. By accepting this document, the recipient agrees to keep the contents in the strictest confidence and not to reproduce or divulge any of its contents without the prior written consent of the Company. This is a project prospectus. It dies not imply and shall not be construed as an offering of securities. Recipients of this project prospectus are not to construe the content of this document as investment, legal or tax advice from either the Company or the preparers of this document. Each recipient of this project document specifically understands and agrees that any estimates, projections, revenue models, forecasts or assumptions are by definition uncertain. This project prospectus contains forward-looking statements and is subject to risk, uncertainties and assumptions by the Company. The Company’s actual operations and results therefore may differ materially from the forward- thinking statements. Market Data and certain industry forecasts used throughout this business plan were obtained from internal surveys, market research, publicly available information and industry publications. Industry publications generally state that the information contained therein has been obtained from sourced believable to be reliable but that the accuracy and completeness of such information is not guaranteed. Similarly, internal surveys, industry forecasts and market research while believed to be reliable, have not been independently verified by the Company, and representations as to the accuracy of such information is being made. -
In Defence of Folk Psychology
FRANK JACKSON & PHILIP PETTIT IN DEFENCE OF FOLK PSYCHOLOGY (Received 14 October, 1988) It turned out that there was no phlogiston, no caloric fluid, and no luminiferous ether. Might it turn out that there are no beliefs and desires? Patricia and Paul Churchland say yes. ~ We say no. In part one we give our positive argument for the existence of beliefs and desires, and in part two we offer a diagnosis of what has misled the Church- lands into holding that it might very well turn out that there are no beliefs and desires. 1. THE EXISTENCE OF BELIEFS AND DESIRES 1.1. Our Strategy Eliminativists do not insist that it is certain as of now that there are no beliefs and desires. They insist that it might very well turn out that there are no beliefs and desires. Thus, in order to engage with their position, we need to provide a case for beliefs and desires which, in addition to being a strong one given what we now know, is one which is peculiarly unlikely to be undermined by future progress in neuroscience. Our first step towards providing such a case is to observe that the question of the existence of beliefs and desires as conceived in folk psychology can be divided into two questions. There exist beliefs and desires if there exist creatures with states truly describable as states of believing that such-and-such or desiring that so-and-so. Our question, then, can be divided into two questions. First, what is it for a state to be truly describable as a belief or as a desire; what, that is, needs to be the case according to our folk conception of belief and desire for a state to be a belief or a desire? And, second, is what needs to be the case in fact the case? Accordingly , if we accepted a certain, simple behaviourist account of, say, our folk Philosophical Studies 59:31--54, 1990. -
Bias and Critical Thinking
BIAS AND CRITICAL THINKING Point: there is an alternative to • being “biased” (one-sided, closed-minded, etc.) • simply having an “opinion” (by which I mean a viewpoint that has subjective value only: “everyone has their own opinions”) • being neutral and not taking a position In thinking about bias, it is important to distinguish between four things: 1. a particular position taken on an issue 2. the source of that position (its support and basis) 3. the resistance or openness to other positions 4. the impact that position has on other positions and viewpoints taken by the person Too often, people confuse these four. One result is that people sometimes assume that taking any position on an issue (#1) is an indication of bias. If this were true, then the only way to avoid bias would be to not take a position but rather simply present what are considered to be facts. In this way one is supposedly “objective” and “neutral.” However, it is highly debatable whether one can really be objective and neutral or whether one can present objective facts in a completely neutral way. More importantly, there are two troublesome implications of such a viewpoint on bias: • the ideal would seem to be not taking a position (but to really deal with issues we have to take a position) • all positions are biased and therefore it is difficult if not impossible to judge one position superior to another. It is far better to reject the idea that taking any position always implies bias. Rather, bias is a function either of the source of that position, or the resistance one has to other positions, or the impact that position has on other positions and viewpoints taken. -
You Can Choose to Be Happy
You Can Choose To Be Happy: “Rise Above” Anxiety, Anger, and Depression with Research Evidence Tom G. Stevens PhD Wheeler-Sutton Publishing Co. YOU CAN CHOOSE TO BE HAPPY: “Rise Above” Anxiety, Anger, and Depression With Research Evidence Tom G. Stevens PhD Wheeler-Sutton Publishing Co. Palm Desert, California 92260 Revised (Second) Edition, 2010 First Edition, 1998; Printings, 2000, 2002. Copyright © 2010 by Tom G. Stevens PhD. All rights reserved. Printed in the United States of America. No part of this book may be used or reproduced in any manner whatsoever without written permission except in the case of brief quotations embodied in critical articles and reviews; or except as provided by U. S. copyright law. For more information address Wheeler-Sutton Publishing Co. The cases mentioned herein are real, but key details were changed to protect identity. This book provides general information about complex issues and is not a substitute for professional help. Anyone needing help for serious problems should see a qualified professional. Printed on acid-free paper. Publisher’s Cataloging-in-Publication Data Stevens, Tom G., Ph.D. 1942- You can choose to be happy: rise above anxiety, anger, and depression./ Tom G. Stevens Ph.D. –2nd ed. p. cm. Includes bibliographical references. ISBN 978-0-9653377-2-4 1. Happiness. 2. Self-actualization (Psychology) I. Title. BF575.H27 S84 2010 (pbk.) 158-dc22 Library of Congress Control Number: 2009943621 CONTENTS INTRODUCTION: ..................................................................................................................... -
Rethinking Logical Reasoning Skills from a Strategy Perspective
Rethinking Logical Reasoning Skills from a Strategy Perspective Bradley J. Morris* Grand Valley State University and LRDC, University of Pittsburgh, USA Christian D. Schunn LRDC, University of Pittsburgh, USA Running Head: Logical Reasoning Skills _______________________________ * Correspondence to: Department of Psychology, Grand Valley State University, 2117 AuSable Hall, One Campus Drive, Allendale, MI 49401, USA. E-mail: [email protected], Fax: 1-616-331-2480. Morris & Schunn Logical Reasoning Skills 2 Rethinking Logical Reasoning Skills from a Strategy Perspective Overview The study of logical reasoning has typically proceeded as follows: Researchers (1) discover a response pattern that is either unexplained or provides evidence against an established theory, (2) create a model that explains this response pattern, then (3) expand this model to include a larger range of situations. Researchers tend to investigate a specific type of reasoning (e.g., conditional implication) using a particular variant of an experimental task (e.g., the Wason selection task). The experiments uncover a specific reasoning pattern, for example, that people tend to select options that match the terms in the premises, rather than derive valid responses (Evans, 1972). Once a reasonable explanation is provided for this, researchers typically attempt to expand it to encompass related phenomena, such as the role of ‘bias’ in other situations like weather forecasting (Evans, 1989). Eventually, this explanation may be used to account for all performance on an entire class of reasoning phenomena (e.g. deduction) regardless of task, experience, or age. We term this a unified theory. Some unified theory theorists have suggested that all logical reasoning can be characterized by a single theory, such as one that is rule-based (which involves the application of transformation rules that draw valid conclusions once fired; Rips, 1994). -
Idioms-And-Expressions.Pdf
Idioms and Expressions by David Holmes A method for learning and remembering idioms and expressions I wrote this model as a teaching device during the time I was working in Bangkok, Thai- land, as a legal editor and language consultant, with one of the Big Four Legal and Tax companies, KPMG (during my afternoon job) after teaching at the university. When I had no legal documents to edit and no individual advising to do (which was quite frequently) I would sit at my desk, (like some old character out of a Charles Dickens’ novel) and prepare language materials to be used for helping professionals who had learned English as a second language—for even up to fifteen years in school—but who were still unable to follow a movie in English, understand the World News on TV, or converse in a colloquial style, because they’d never had a chance to hear and learn com- mon, everyday expressions such as, “It’s a done deal!” or “Drop whatever you’re doing.” Because misunderstandings of such idioms and expressions frequently caused miscom- munication between our management teams and foreign clients, I was asked to try to as- sist. I am happy to be able to share the materials that follow, such as they are, in the hope that they may be of some use and benefit to others. The simple teaching device I used was three-fold: 1. Make a note of an idiom/expression 2. Define and explain it in understandable words (including synonyms.) 3. Give at least three sample sentences to illustrate how the expression is used in context. -
An Introduction to Philosophy
An Introduction to Philosophy W. Russ Payne Bellevue College Copyright (cc by nc 4.0) 2015 W. Russ Payne Permission is granted to copy, distribute and/or modify this document with attribution under the terms of Creative Commons: Attribution Noncommercial 4.0 International or any later version of this license. A copy of the license is found at http://creativecommons.org/licenses/by-nc/4.0/ 1 Contents Introduction ………………………………………………. 3 Chapter 1: What Philosophy Is ………………………….. 5 Chapter 2: How to do Philosophy ………………….……. 11 Chapter 3: Ancient Philosophy ………………….………. 23 Chapter 4: Rationalism ………….………………….……. 38 Chapter 5: Empiricism …………………………………… 50 Chapter 6: Philosophy of Science ………………….…..… 58 Chapter 7: Philosophy of Mind …………………….……. 72 Chapter 8: Love and Happiness …………………….……. 79 Chapter 9: Meta Ethics …………………………………… 94 Chapter 10: Right Action ……………………...…………. 108 Chapter 11: Social Justice …………………………...…… 120 2 Introduction The goal of this text is to present philosophy to newcomers as a living discipline with historical roots. While a few early chapters are historically organized, my goal in the historical chapters is to trace a developmental progression of thought that introduces basic philosophical methods and frames issues that remain relevant today. Later chapters are topically organized. These include philosophy of science and philosophy of mind, areas where philosophy has shown dramatic recent progress. This text concludes with four chapters on ethics, broadly construed. I cover traditional theories of right action in the third of these. Students are first invited first to think about what is good for themselves and their relationships in a chapter of love and happiness. Next a few meta-ethical issues are considered; namely, whether they are moral truths and if so what makes them so. -
Logical Reasoning
updated: 11/29/11 Logical Reasoning Bradley H. Dowden Philosophy Department California State University Sacramento Sacramento, CA 95819 USA ii Preface Copyright © 2011 by Bradley H. Dowden This book Logical Reasoning by Bradley H. Dowden is licensed under a Creative Commons Attribution- NonCommercial-NoDerivs 3.0 Unported License. That is, you are free to share, copy, distribute, store, and transmit all or any part of the work under the following conditions: (1) Attribution You must attribute the work in the manner specified by the author, namely by citing his name, the book title, and the relevant page numbers (but not in any way that suggests that the book Logical Reasoning or its author endorse you or your use of the work). (2) Noncommercial You may not use this work for commercial purposes (for example, by inserting passages into a book that is sold to students). (3) No Derivative Works You may not alter, transform, or build upon this work. An earlier version of the book was published by Wadsworth Publishing Company, Belmont, California USA in 1993 with ISBN number 0-534-17688-7. When Wadsworth decided no longer to print the book, they returned their publishing rights to the original author, Bradley Dowden. If you would like to suggest changes to the text, the author would appreciate your writing to him at [email protected]. iii Praise Comments on the 1993 edition, published by Wadsworth Publishing Company: "There is a great deal of coherence. The chapters build on one another. The organization is sound and the author does a superior job of presenting the structure of arguments. -
A Revision of the Morgan Test of Logical Reasoning Fred K
University of Richmond UR Scholarship Repository Master's Theses Student Research 6-1966 A revision of the Morgan Test of Logical Reasoning Fred K. McCoy Follow this and additional works at: http://scholarship.richmond.edu/masters-theses Recommended Citation McCoy, Fred K., "A revision of the Morgan Test of Logical Reasoning" (1966). Master's Theses. Paper 725. This Thesis is brought to you for free and open access by the Student Research at UR Scholarship Repository. It has been accepted for inclusion in Master's Theses by an authorized administrator of UR Scholarship Repository. For more information, please contact [email protected]. A REVISION OF THE l\10RGAN TEST OF LOGICAL REASONING Fred K. McCoy Approved: tye) ii A REVISION OF THE MORGAN TEST OF LOGICAL REASONWG Fred K. McCoy A thesis submitted in partial :fulfillment of the requirements for the degree of :tvlasters of Arts in Psychology in the Graduate School of the University of Hichmond. June, 1966 iii ACKNOWLEDGEMENTS The author gratefully acknowledges the assistance rendered by Dr. Austin E. Grigg of the Psychology faculty of the University of Richmond, his thesis advisor, whose advice wns invaluilhle at every stage in the planning and execu tion of the present study. The study could not have been completed without the assistance given by Dr. Robison James of the Religion faculty of the University of Richmond, who gave his logic students as subjects and his advice and opf.:rJ.ons in measuring logical ability. In a deeper sense the author acknowledges his debt to Dr. William J. Morgan of APTITUDE ASSOCIATES, INC. -
Subjective Logic Draft, 18 February 2013
Subjective Logic Draft, 18 February 2013 Audun Jøsang University of Oslo Web: http://folk.uio.no/josang/ Email: [email protected] Preface Subjective logic is a type of probabilistic logic that allows probability values to be expressed with degrees of uncertainty. The idea of probabilistic logic is to combine the strengths of logic and probability calculus, meaning that it has binary logic’s capacity to express structured argument models, and it has the power of probabilities to express degrees of truth of those arguments. The idea of subjective logic is to extend probabilistic logic by also expressing uncertainty about the probability values themselves, meaning that it is possible to reason with argument models in presence of uncertain or incomplete evidence. In this manuscript we describe the central elements of subjective logic. More specifically, we first describe the representations and interpretations of subjective opinions which are the input arguments to subjective logic. We then describe the most important subjective logic operators. Finally, we describe how subjective logic can be applied to trust modelling and for analysing Bayesian networks. Subjective logic is directly compatible with binary logic, probability calculus and classical probabilistic logic. The advantage of using subjective logic is that real world situations can be more realistically modelled, and that conclusions more correctly reflect the ignorance and uncertainties that necessarily result from partially uncertain input arguments. Contents 1 Introduction 3 2 Elements of Subjective Opinions 7 2.1 Motivation . ............................................. 7 2.2 Flexibility of Representation . .................................. 7 2.3 The Reduced Powerset of Frames .................................. 8 2.4 Belief Distribution over the Reduced Powerset .