Exercises
on Fallacies
In the column on the right, circle the letters corresponding to the fallacies illustrated by the following examples. Note that some examples do not involve any fallacy.
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1. You give historical
precedent to show how reducing the interest rate further could actually
prolong the recession. I see nothing wrong with your argument, but it
couldn't be right because Nobel prize winning economist Herbert Simon
rejects your conclusion.
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1
A B C D |
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2. Joe and Mary both have
excellent grades. If Mary is valedictorian, she will have a better chance
of getting a Rotary scholarship. Without a scholarship, she will not
be able to go to college. Let's name Mary valedictorian.
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2
A B C D |
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3. Won’t you buy insurance
from me for your store? If you don't, somebody might accidentally drop
some gasoline and a cigarette in the dumpster out back one night after
you close.
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3
A B C D |
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4. When Chrysler was in
trouble, the federal government helped them out. So if Toyota has similar
troubles, the federal government should help out Toyota.
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4
A B C D |
5. I love you. Therefore
I am a lover. All the world loves a lover. You are all the world to me.
Therefore you love me.
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5 A B C
D |
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6. Please answer the following
question. Having a president roughly your own age makes you feel how?
a) old; b) inadequate; c) like a total failure. - Doonesbury
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6
A B C D |
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7. Rat in psychology lab:
"Boy, have I got this guy trained! Every time I press this bar,
he drops in a piece of food!"
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7
A B C D |
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8. Your noble son is mad:
Mad call I it, for to define true madness, what is't but to be nothing
else but mad? - Shakespeare's Hamlet
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8
A B C D |
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9. Leibniz contends that
this world is the best of all possible worlds which God could have made.
If that's true, everything in this world is as good as it could be.
But it's not!
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9
A B C D |
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10. Congress shouldn't pay
any attention to the Joint Chiefs of Staff’s reasons for asking for
increased military appropriations. As members of the armed forces, they
will naturally want as much money for military purposes as they think
they can get.
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10
A B C D |
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11. Being away from home
is a necessary condition for being homesick. Andy is away from home.
So Andy is homesick.
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11 A B
C D |
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12. Plants and animals
- living things - are made up of cells which are also living. And cells
are made up of molecules. So even molecules must have some kind of life.
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12
A B C D |
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13. At night games, the seat
on the ticket doesn’t mean anything. Everyone just sits where they want
to sit. That’s why I’m in the seat on your ticket.
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13
A B C D |
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14. Either Italy fought as
an ally of Germany in World War II or Germany lost the war. Italy was
no an ally of Germany. So Germany lost the war.
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14
A B C D |
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15. Jean Valjean has been
found guilty of stealing candlesticks from the abbey. However, this
is his first offense, he has been unable to find work, and he intended
to sell the candlesticks to buy food for his starving children. The
courts should be lenient in sentencing him.
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15
A B C D |
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16. “To reject God is to
accept hell. (Whew, it’s hot down there!)”
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16
A B C D |
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17. Joan makes an argument
that if the minimum wage isn’t raised to at least $7.00 an hour right
away, there will be riots by disgruntled workers within five years.
But that kind of thinking could come right out of the Communist Manifesto.
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17
A B C D |
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18. Men and women differ
in many ways. Only women bear children. Men normally have more facial
hair than women. And women outlive men. So either child-bearing produces
longevity or facial hair causes early death.
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18 A B
C D |
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19. We all know Social Security
is intended for retirement. I saw a young man in a wheelchair going
into the Social Security Office. It’s too bad he won’t get any benefits.
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19
A B C D |
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20. I can't accept your argument
to show that self-consciousness developed out of the break-down of the
bicameral brain. This leading text on neurophysiology contradicts a
basic assumption you make about the structure of the brain.
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20
A B C D |
Solutions:
1 - C; 2 – B; 3 – B; 4 – A; 5 – B; 6 – C; 7 – A; 8 – C; 9 – B; 10 – C; 11
– A; 12 – B; 13 – A; 14 – D; 15 – D; 16 – B; 17 – A; 18 – C; 19 – A; 20 –
D.