2. Thinking Critically
What are the jobs you identified with your 3 people?
What are the 6 misconceptions?
Describe a way that mathematics is involved in each issue below:
Long-term viability of the SS system
Appropriate level for th efederal gas tax
Fairness of medial insurance rates
Job discrimination against women or ethnic groups.
Possible bias in standardized tests
Degree of risk posed by carbon dioxide emissions
Immigration policy of the US
Violence in public schools
Issue from newspaper

3. Recognizing the Fallacies
Unit 1A
Recognizing the Fallacies
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4. Bursting Bubble p.14
The deep global recession that began in 2007 was spurred in large part by a collapse in the housing prices, which led many homeowners to default on their home mortgages, which in turn created a crisis for banks and other institutions that bought, sold , or insured home mortgages.
If we hope to avoid similar crises in the future, a key questions is whether there were early warning signs that might have allowed both individuals and policy makers to make decision that could have prevented the problems before they occurred.
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5. Bursting Bubble Questions CN BB 1-7
1. Consider a family with an annual income of $50,000. How much in 2000 with ratio of 3.5? How much in 2005 when ratio was 4.7?
2. What can you conclude about how the percentage of income that a family spent on housing changed during the housing bubble?
3. Based on your understanding of the housing crisis, what happened in most cases during the housing bubble?
4. Do you think it was inevitable for the bubble to burst? Why or why not?
5. How could you use the data to help you decide how much to spend when buying a house?
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6. Definitions
Logic is the study of the methods and principles of reasoning.
An argument uses a set of facts or assumptions, called premises, to support a conclusion.
A fallacy is a deceptive argument—an argument in which the conclusion is not well supported by the premises.
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7. Fallacy Structures
Appeal to Popularity Many people believe p is true; therefore…p is true.
False Cause A came before B; therefore…A caused B.
Appeal to Ignorance There is no proof that p is true; therefore…p is false.
Hasty Generalization A and B are linked one or a few times; therefore…A causes B (or vice versa).
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8. Fallacy Structures
Limited Choice p is false; therefore…only q can be true.
Appeal to Emotion p is associated with a positive emotional response; therefore… p is true.
Personal Attack I have a problem with the person or group claiming p; therefore… p is not true.
Circular Reasoning p is true. p is restated in different words. (The argument states the conclusion.)
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9. Fallacy Structures
Diversion (Red Herring) p is related to q and I have an argument concerning q; therefore…p is true.
Straw Man I have an argument concerning a distorted version of p; therefore…I hope you are fooled into concluding I have an argument concerning the real version of p.
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10. Examples Determine the fallacy structure of each argument.
“Your lack of enthusiasm for astronomy proves that you hate science.”
→ Limited choice
“I don’t support the mayor’s tax plan because he is a bad person.”
→ Personal attack
“This movie sold the most tickets last weekend, so it must be the best movie in the theaters.”
→ Appeal to popularity
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11. Homework 1A Class Notes BB 1-7 p.20 1-10 1 web 1 world
41. Campaign Site
42. Gun Control Debate
43. Death penalty Debate
44. Health Care Debate
45. Fallacy Web Sites
1 world
46. Editorial Fallacies
47. Fallacies in Advertising
48. Fallacies in Politics
49. Personal Fallacies
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