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AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

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Page 1: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

AMBIGUITY!

One of two sources of major confusion in people’s thinking!

Chapter 3 (first part of 3)

Page 2: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“I know a little Italian.”

Does this mean…

“I know a small Italian person”?

Or “I understand a little of the Italian

language”?

2© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 3: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“I know a little Italian.”

It means BOTH!

It is AMBIGUOUS!

3© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 4: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“We can’t lose in Iraq.”

Does this mean… “It is not possible for us to lose in Iraq”?

Or “We cannot afford to lose in Iraq”?

It’s ambiguous!

4© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 5: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“I like eating a lot!”

Ho ho ho “Eating is something I like a lot”?

Or “Eating a lot is something I like”?

It’s ambiguous!

5© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 6: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Cheney’s shooting was terrible.”

Does this mean… “Cheney was a terrible shot”? “It was terrible Cheney was shot”? “Cheney’s shooting of something was

terrible”?

6© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 7: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“The author of Hamlet might have been a woman.”

Does anyone see two possible meanings?

1.“Hamlet might have been authored by a woman, not by Shakespeare.”

2.“Shakespeare might have been a woman.”

7© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 8: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

Definition: An ambiguous statement has more than one meaning, and it isn’t clear which meaning is intended.

8© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 9: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

Hang on! It gets complicated.

Pretty elementary?

9© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 10: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

Divide into two groups:

Linda likes candy more than Howard. Women can fish. Charlie rents his apartment. People who lie frequently get into a lot

of trouble.

10© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 11: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

Hint:

Linda likes candy more than Howard. Women can fish. Charlie rents his apartment. People who lie frequently get into a lot

of trouble.

11© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 12: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Linda likes candy more than Howard.” Does Linda like candy more than

Howard likes candy?

Or Does Linda like candy more than she

likes Howard?

12© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 13: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

The problem is SYNTAX.

Huh? Syntax is GRAMMAR.

“Linda likes candy more than Howard.”

It’s unclear what “more than” refers to. Is it Howard? Or is it how much Howard likes candy?

13© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 14: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“People who lie frequently get into a lot of trouble.” Another syntax (grammar) problem. We

don’t know whether “frequently” goes with what comes before it, or with what comes after it.

Does it mean “frequent liars get into trouble” or “liars frequently get into trouble”?

14© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 15: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

Which of these has a syntax ambiguity?

A. My grandmother heard the salesman with a hearing aid.

B. My grandmother heard the salesman who had a hearing aid.

15© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 16: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

And which of these has a syntax ambiguity?

A. Thinking clearly involves hard work.

B. Clearly, thinking involves hard work.

16© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 17: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

What’s the problem here?

Jordan could write more profound essays.

You don’t know what “more” goes with.

17© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 18: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

Great!

Everyone make up one example of a syntax ambiguity!

Best example goes home after class.

18© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 19: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Charles drew his gun.”

This, too, is ambiguous.

Syntax problems????

The problem is: “drew” has two meanings.

Nyet!

19© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 20: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

When a statement contains an expression that has more than one meaning, like “drew,” then what you have is:

A SEMANTIC ambiguity.

20© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 21: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Women can fish.”

“Can” has two meanings:

1. “Are able to”

2. “Put inside cans”

So the sentence has a SEMANTIC ambiguity.

21© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 22: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Charlie rents his apartment.”

“Rents” has two meanings:

1. “Rents to”

2. “Rents from”

So the sentence has a SEMANTIC ambiguity.

22© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 23: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

X-cellent!

Now make up one example of a semantic ambiguity!

23© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 24: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Someone’s in the bed next to me.” Syntax ambiguity or semantic

ambiguity?

Syntax ambiguity.

“Next to” might go with the bed or with me.

24© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 25: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“We’ll see lots when you visit.”

Syntax ambiguity or Semantic ambiguity??

Semantic ambiguity.

“Lots” has two different meanings.

25© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 26: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“In one of Shakespeare’s famous plays, Hamlet relieves himself in a long soliloquy.”—Richard Lederer

Syntax ambiguity or Semantic ambiguity???

Semantic ambiguity.

“Relieves” has two different meanings.

26© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 27: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Angela stuffed her drawers with sox.” Syntax ambiguity or semantic

ambiguity?

Semantic ambiguity.

“Drawers” has two different meanings.

27© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 28: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“They were both exposed to someone who was ill a week ago.” Syntax ambiguity or semantic

ambiguity?

Syntax ambiguity.

“A week ago” might refer to when the person was ill, or it might refer to when they were exposed

28© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 29: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Chelsea has Hillary’s nose.”

Syntax ambiguity or semantic ambiguity?

Semantic ambiguity. “Has” means both:

a) Chelsea’s nose RESEMBLES Hillary’s, and

b) Hillary’s nose (for some reason) is IN CHELSEA’S POSSESSION…

29© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 30: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

Stop right there!

We get it!

30© 2009 McGraw-Hill Higher Education. All rights reserved.

Roy

alty

-Fre

e/C

OR

BIS

Page 31: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

OK! So much for syntax ambiguity and for semantic ambiguity.

One more important kind of ambiguity…

31© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 32: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Grouping ambiguity.”

Who drinks more beer? Fresno State students, or Chico students?

32© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 33: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

Uh… Can we get a clue?…

33© 2009 McGraw-Hill Higher Education. All rights reserved.

© B

anan

aSto

ck/P

unch

stoc

k

Page 34: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

Well, FSU has 10,000 more students than CSU. So, COLLETIVELY, Fresno students

drink more.

But INDIVIDUALLY? Who knows?

34© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 35: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

GROUPING AMBIGUITY:When it is unclear if you are referring to a group of things collectively or individually

35© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 36: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Swedes eat millions of quarts of yogurt every year.” Does this refer to Swedes collectively? Yes. In real life it’s clear we are talking

about Swedes collectively. So this is NOT ambiguous.

36© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 37: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Attorneys make less money than physicians.” Does this refer to attorneys and

physicians individually or collectively?

Can’t say. It has a grouping ambiguity.

37© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 38: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Seven people rode in that taxi.” Is this ambiguous? Yes: Can’t tell whether they rode

together or one by one.

38© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 39: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Which causes more air pollution, lawn mowers or motorcycles?”

Which question do you ask first?

A.“How do you know that?” Or…

B.“Do you mean collectively or individually?????”

39© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 40: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“Nancy Pelosi wants to give us the biggest tax increase in history!”

What is the first question?A. “Bummer! Why does she wanna do that?”

B. “What makes you think that?”

C. “Do you mean collectively or individually? It’s C. The increase in total tax

revenues is different from the increase for the individual tax payer.

40© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 41: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

Some syntax problems are subtle:

41© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 42: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

“WOMAN GETS 9 YEARS FOR KILLING 11TH HUSBAND”—Newspaper headline

Has she killed 11 husbands? Or has she killed one husband—her 11th?

42© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 43: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

Review:

Good reasoning depends on clear thinking.

Ambiguity is one source of confusion. Three types of ambiguity:

– Semantic– Syntax– Grouping

43© 2009 McGraw-Hill Higher Education. All rights reserved.

Page 44: AMBIGUITY! One of two sources of major confusion in people’s thinking! Chapter 3 (first part of 3)

Give yourself a hand.

Now, let’s look at a couple of real life examples….

44© 2009 McGraw-Hill Higher Education. All rights reserved.