2.5 Quiz Critical Thinking by Example


1. Abby: Organic foods are no guarantee of avoiding disease. Recently, German officials concluded that organically grown sprouts were the cause of a number of deaths in Germany. (<http://www.npr.org/blogs/health/2011/06/10/137100829/german-officials-conclude-sprouts-are-the-e-coli-culprit>).

Bob: That’s funny you should say that Abby. I was just saying to my wife the other day that non-organic produce is safer for you than organic produce. Your example of the sprouts proves my point.

Candice: I don’t think anyone should buy organic produce. Have you seen who buys this crap? It is usually unemployed hippies.

Diego: That’s not true Candice. A number of celebrities buy organic food. According to an article I read, these celebrities include Courtney Cox, Jessica Simpson and Kelley Osborn. (<http://blogs.babble.com/famecrawler/2010/08/12/celebrity-parents-who-eat-organic/>)

Emmanuel: Diego, your argument is weak. Candice said that it is usually unemployed hippies that buy organic food, she did not say that everyone who buys organic food is an unemployed hippie.

The conclusion of Abby's argument is

a) Organic foods are no guarantee of avoiding disease.
b) Recently, German officials concluded that organically grown sprouts were the cause of a number of deaths in Germany.
2. The best evaluation of Abby's argument is

a) it is a good argument.
b) it commits the fallacy of irrelevant reason.
c) it commits the fallacy of hasty conclusion.
d) it commits the fallacy of problematic premise.
3. The conclusion of Bob's argument is that organic sprouts in Germany caused the death of some Germans.

a) True.
b) False.
4. The best evaluation of Bob's argument is

a) it is a good argument.
b) it commits the fallacy of irrelevant reason.
c) it commits the fallacy of hasty conclusion.
d) it commits the fallacy of problematic premise.
5. The conclusion of Candice's argument is that no one should buy organic produce.

a) True.
b) False.
6. The best evaluation of Candice's argument is

a) it is a good argument.
b) it commits the fallacy of irrelevant reason.
c) it commits the fallacy of hasty conclusion.
d) it commits the fallacy of problematic premise.
7. The conclusion of Diego's argument is that it is not true that unemployed hippies are the usual consumers of organic produce.

a) True.
b) False.
8. The best evaluation of Diego's argument is

a) it is a good argument.
b) it commits the fallacy of irrelevant reason.
c) it commits the fallacy of hasty conclusion.
d) it commits the fallacy of problematic premise.
9. Emmanuel's conclusion is that Candice did not say that everyone who buys organic food is an unemployed hippie.

a) True.
b) False.
10. The best evaluation of Emmanuel's argument is

a) it is a good argument.
b) it commits the fallacy of irrelevant reason.
c) it commits the fallacy of hasty conclusion.
d) it commits the fallacy of problematic premise.
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