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Types of Types of Logical Logical Fallacies Fallacies

Fallacy

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Slides from lesson on Fallacy & Presenting & Outlining Findings

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Page 1: Fallacy

Types of Logical Types of Logical FallaciesFallacies

Types of Logical Types of Logical FallaciesFallacies

Page 2: Fallacy

Hasty Generalisation

Sergey BrinCo-founder of Google

Page 3: Fallacy

False analogy

=

Page 4: Fallacy

• Affirming the Consequent

• Denying the Antecedent

• Logical Inconsistency

If A is true, then B is true. B is stated to be true. Therefore, A must be true.

ExampleIf I am a human then I am a mammal. I am a mammal. Therefore, I am a human.

Non sequitur

Page 5: Fallacy

• Affirming the Consequent

• Denying the Antecedent

• Logical Inconsistency

ExampleIf I am in Tokyo, I am in Japan. I am not in Tokyo. Therefore, I am not in Japan.

Non sequitur

If A then B.Not A.Therefore, not B.

Page 6: Fallacy

• Affirming the Consequent

• Denying the Antecedent

• Logical Inconsistency

Mary is taller than Jane, and Jane is taller than Fiona, while Fiona is taller than Mary.

Non sequitur

Page 7: Fallacy

Begging the question

Rising ERP charges begs the question

to buy that car or not?

Page 8: Fallacy

Begging the question

Democracy must be the best form of government because the majority is always right

Page 9: Fallacy

Your resume looks impressive but I need another reference.

Good. But how do I know that Jill is trustworthy?

Jill can give me a good reference.Certainly. I can vouch for her.

Page 10: Fallacy

Unproven premise for argument to justify the war in Iraq:1) Saddam has WMD; and2) Saddam has a cooperative relationship with al-Quaida

Page 11: Fallacy

Outlining & Presenting

Your Findings

Page 12: Fallacy

PurposePurpose:

• To examine whether NUS students experience anxiety about their future

• To investigate the sources of anxiety

Anxiety about the future

Page 13: Fallacy

Methodology

Personal• Competitiveness• Lack of direction

• Job-related• Material wealth-related

• Fear of failure

Societal• Society’s expectations

Familial• Parent’s expectations

• Siblings’ example

Questionnaire Survey• 5-point Likert Scale• 15 questions to test anxiety

Interviews

Page 14: Fallacy

Findings

2.1 Extent of anxiety about future

0

2

4

6

8

10

12

HighAnxiety

ModerateAnxiety

LowAnxiety

Medicine

Business

Engineering

Page 15: Fallacy

Findings

2.2 Sources of anxiety

2.2.1 Competiveness

2.2.2 Lack of direction

2.2.3 Fear of failure

Personal

Familial

Societal

Personal• Competitiveness• Lack of direction

• Job-related• Material wealth-related

• Fear of failure

Page 16: Fallacy

Findings

2.2 Sources of anxiety

2.2.1 Competiveness

The most common source of anxiety cited by the interviewees ….. This was articulated by the following students:

I’m worried that my friends will get better-paying jobs than me, then very malu one leh. (Extract 1)

I want to be the first among my friends to earn my first million. That is my goal. Die die must achieve. (Extract 2)

General summary

Excerpt

Page 17: Fallacy

Findings

2.1 Extent of anxiety about the future

2.2 Sources of anxiety

2.2.1 Competiveness

2.2.2 Lack of direction

2.2.3 Fear of failure

Page 18: Fallacy

Findings

2.1 Survey Results

2.1.1

2.1.2

2.2 Focus Group Results

2.2.1

2.2.2

Page 19: Fallacy

Findings

2.1 Problem

2.2 Suggested Solutions

2.2.1 Questionnaire findings

2.2.2 Interview findings

Page 20: Fallacy

Findings

2.1 Problem

2.2 Suggested Solutions

2.2.1 Increase commission

2.2.2 Performance-based bonus

2.2.3 Well-defined career path