Lecture 10 Fallacies II - CC202SemesterOne11/12 FallaciesII...

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17/03/12   1 CC202 Semester One 11/12 Creative and Critical Thinking Fallacies II
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17/03/12 2 The Classification of Fallacies 「「「「「 「 Fallacies of Inconsistency  「「「「「「 Fallacies of Irrelevance   「「「「「「 Fallacies of Insufficiency  「「「「「「 Fallacies of Inappropriate Presumption  「「「「「「「
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17/03/12 3 III Fallacies of Insufficiency 「「「「「 「「「「「「「「「「「「「「「「「「「「「「 III1  Hasty Generalization  「「「「 III2 Accident  「「「「 III3 Composition  「「 III4 Division  「「 III5 False Cause (a)  Post hoc  Fallacy  「「「「 (b) The Fallacy of Slippery Slope  「「「「 III6 The Fallacy of Denying Antecedent  「「「「「「 III7 The Fallacy of Affirming Consequent  「「「「「「 III8  Appeal to Ignorance 「「「「
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17/03/12 4 III1 Hasty Generalization   「「「「 「「「「 Inductive Generalization 「「「「「「「「「「「「「「「 「「 (sample) 「「「「「「「「「「「「「「「「 「「 / 「「「 / 「「「「「「「「「「「「「「 Since 20% of the interviewees are against smoking, 20%  Hong Kong people are against smoking.  「「「「「「 a) 「「「「 (the sample size is too small) b) 「「「「「「 (there is a structural bias in the sample) c) 「「「「「 (there are unfavorable, contradicting findings  against the conclusion supposed to be drawn) 「「「「「「「「「「「「「「「 (Hasty Generalization)  「「「「
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17/03/12 5 III1 Hasty Generalization   「「「「 “Do most students of HKCC believe in  God?”  To find out, we asked 10 students. 7 of  them believe in God. The conclusion is  obvious: Most students  about 70%  of HKCC believe in God.
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17/03/12 6 III1 Hasty Generalization   「「「「 In a survey on the topic “How many  people are using email services?”, an  email with the question “Do you have an  email account?” is sent to each email  account registered on the web. It turns  out that 100% respondents give the  answer “yes”.  So the survey concludes  that all people use email services.
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17/03/12 7 III1 Hasty Generalization   「「「「 「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「 「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「「 87% 「「「「「 「「「「「「「「「「「「「「「「「「「「「 87% 「「「「「「「「「「「「「「
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17/03/12 8 III2  Accident  「「「「 A generalization that is true by and large may  not apply in some “accidental” or  “exceptional” circumstances. Fallacy of Accident is a fallacy in which a 
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This note was uploaded on 03/17/2012 for the course COMP 3868 taught by Professor Keithchan during the Spring '97 term at Hong Kong Polytechnic University.

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Lecture 10 Fallacies II - CC202SemesterOne11/12 FallaciesII...

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