It is currently 20 Nov 2017, 07:18

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# All intelligent people are nearsighted. I am very

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Director
Joined: 03 May 2007
Posts: 867

Kudos [?]: 271 [0], given: 7

Schools: University of Chicago, Wharton School
All intelligent people are nearsighted. I am very [#permalink]

### Show Tags

08 Sep 2007, 20:19
00:00

Difficulty:

(N/A)

Question Stats:

50% (01:17) correct 50% (02:02) wrong based on 34 sessions

### HideShow timer Statistics

All intelligent people are nearsighted. I am very nearsighted. So I must be a genius.

Which one of the following exhibits both of the logical flaws exhibited in the argument above?

(A) I must be stupid because all intelligent people are nearsighted and I have perfect eyesight.
(B) All chickens have beaks. This bird has a beak. So this bird must be a chicken.
(C) All pigs have four legs, but this spider has eight legs. So this spider must be twice as big as any pig.
(D) John is extremely happy, so he must be extremely tall because all tall people are happy.
(E) All geniuses are very nearsighted. I must be very nearsighted since I am a genius.

Kudos [?]: 271 [0], given: 7

VP
Joined: 10 Jun 2007
Posts: 1434

Kudos [?]: 370 [2], given: 0

Re: CR: All intelligent people are nearsighted. I am very ne [#permalink]

### Show Tags

09 Sep 2007, 09:48
2
KUDOS
Fistail wrote:
All intelligent people are nearsighted. I am very nearsighted. So I must be a genius.

Which one of the following exhibits both of the logical flaws exhibited in the argument above?

(A) I must be stupid because all intelligent people are nearsighted and I have perfect eyesight.
(B) All chickens have beaks. This bird has a beak. So this bird must be a chicken.
(C) All pigs have four legs, but this spider has eight legs. So this spider must be twice as big as any pig.
(D) John is extremely happy, so he must be extremely tall because all tall people are happy.
(E) All geniuses are very nearsighted. I must be very nearsighted since I am a genius.

This one must be LSAT. I just learn this concept recently, so I'll try to give my detailed explanation....

Anyways, the logic here is that:
Stem: intelligent -> nearsighted
Conclusion: nearsighted -> intelligent

This conclusion is flawed because the reversed is not true. The only thing we can conclude from here is that: not nearsighted -> not intelligent

A: intelligent -> nearsighted, not nearsighted -> not intelligent
This is actually a valid conclusion and it is not flawed. Therefore, it is not the right answer. INCORRECT

B. Chicken -> have beaks, have beaks -> chicken
This sounds about the same as the stem.

C. pig -> 4 legs, 8 legs -> twice as big as pigs
No correlation what so ever, INCORRECT

D. Tall -> happy, happy -> tall
This also sounds the same as the stem

E. Genius-> very nearsighted, Genius -> very nearsighted
This is not the same as the stem either...INCORRECT

So we are down to B or D
Since they are similar logic, we need to look at the stem closely. Once you do, you see that genius is an extreme form of intelligent. So the revised stem should be

intelligent -> nearsighted
extremely nearsighted -> extremely intelligent

Now, compare B and D again
For B,
Chicken -> have beaks
have beaks -> chicken

For D,
Tall -> happy,
Extremely happy -> Extremely tall

D must be the correct answer.

Kudos [?]: 370 [2], given: 0

Director
Joined: 09 Aug 2006
Posts: 521

Kudos [?]: 111 [0], given: 0

Re: CR: All intelligent people are nearsighted. I am very ne [#permalink]

### Show Tags

08 Sep 2007, 22:05
Fistail wrote:
All intelligent people are nearsighted. I am very nearsighted. So I must be a genius.

Which one of the following exhibits both of the logical flaws exhibited in the argument above?

(A) I must be stupid because all intelligent people are nearsighted and I have perfect eyesight.
(B) All chickens have beaks. This bird has a beak. So this bird must be a chicken.
(C) All pigs have four legs, but this spider has eight legs. So this spider must be twice as big as any pig.
(D) John is extremely happy, so he must be extremely tall because all tall people are happy.
(E) All geniuses are very nearsighted. I must be very nearsighted since I am a genius.

I think its E..

Kudos [?]: 111 [0], given: 0

Intern
Joined: 25 Aug 2007
Posts: 3

Kudos [?]: [0], given: 0

Re: CR: All intelligent people are nearsighted. I am very ne [#permalink]

### Show Tags

08 Sep 2007, 22:33
My vote is for D

First let's identify the 2 flaws
1. Y implies X. Hence X imples Y (Intelligent implies nearsighted; hence nearsighted implies intelligent)
2. extrapolating intelligent to genius (very nearsighted to very intelligent)

A- wrong : Intelligent=>nearsighted; hence not(nearsighted)=>not(intelligent)
B seems closes but has only the first flaw: Chicken => Beak. Hence Beak => chicken
C-wrong : direct since ratios are brought in
D-CORRECT : tall=>happy; so very happy => very tall
E - Genius => very nearsighted - has none of the flaws

What's OA ?

Kudos [?]: [0], given: 0

Current Student
Joined: 28 Apr 2012
Posts: 306

Kudos [?]: 480 [0], given: 142

Location: India
Concentration: Finance, Technology
GMAT 1: 650 Q48 V31
GMAT 2: 770 Q50 V47
WE: Information Technology (Computer Software)
Re: All intelligent people are nearsighted. I am very [#permalink]

### Show Tags

06 Jun 2013, 00:34
Made it wrong. missed the overstatement error.
posting OE for others:

This argument commits two errors. First, it takes a necessary condition to be sufficient. The
statement "All intelligent people are nearsighted" means that for a person to be intelligent he or she must
necessarily be nearsighted. But being nearsighted is not sufficient to make one intelligent. Second, the
argument overstates the claim made in the premise. The premise is about intelligent people in general, not
a subgroup of intelligent people—geniuses. Now in choice (D), the statement "all tall people are happy"
has the same form as "All intelligent people are nearsighted"; the statement "John is extremely happy" has
the same form as "I am very nearsighted"; and the statement "so he must be extremely tall” has the same
form as "So I must be a genius.” This shows a one-to-one correspondence between choice (D) and the
given argument. Hence the answer is (D).
Choices (A) and (E) are eye-catchers because they mention nearsightedness. Remember the answer to
a logical structure (logical flaw) argument will have the same structure as the given argument but will be in
a different context.
(B) is second-best. It does commit the fallacy of taking a necessary condition to be sufficient, but it
does not overstate the claim.
It's hard to give choice (C) any meaning.
_________________

"Appreciation is a wonderful thing. It makes what is excellent in others belong to us as well."
― Voltaire

Press Kudos, if I have helped.
Thanks!

Kudos [?]: 480 [0], given: 142

Verbal Forum Moderator
Joined: 16 Jun 2012
Posts: 1126

Kudos [?]: 3552 [0], given: 123

Location: United States
Re: All intelligent people are nearsighted. I am very [#permalink]

### Show Tags

07 Jun 2013, 23:55
Wow, another LSAT question. Tricky question. KEY is "both of the logical flaws". We need two show TWO FLAWS in the argument.
* First flaw: All intelligent people are nearsighted
* Second flaw: I'm very nearsighted. So I must be a genius

The correct answer MUST have TWO FLAWS in its reasoning.

(A) I must be stupid because all intelligent people are nearsighted and I have perfect eyesight.
Wrong. Not the pattern mentioned in the question. Nearsighted >< perfect eyesight.

(B) All chickens have beaks. This bird has a beak. So this bird must be a chicken.
Wrong. SHELL GAME. The wording is quite similar to the question, but it's a trap. Because B has only ONE flaw in its reasoning.
* First part: All chicken have beaks ==> Correct, it does not have flaw.
* Second part: This bird has a beak. So this bird must be a chicken ==> Wrong.
B is wrong because it has ONLY ONE FLAW.

(C) All pigs have four legs, but this spider has eight legs. So this spider must be twice as big as any pig.
Wrong. Out of scope.

(D) John is extremely happy, so he must be extremely tall because all tall people are happy.
Correct.
* First flaw: All tall people are happy ==> Wrong. It's so ridiculous
* Second flaw: John is extremely happy, so he must be extremely tall ==> Wrong
D has TWO FLAWS in its reasoning ==> must be the answer.

(E) All geniuses are very nearsighted. I must be very nearsighted since I am a genius.

Hope it helps.
_________________

Please +1 KUDO if my post helps. Thank you.

"Designing cars consumes you; it has a hold on your spirit which is incredibly powerful. It's not something you can do part time, you have do it with all your heart and soul or you're going to get it wrong."

Chris Bangle - Former BMW Chief of Design.

Kudos [?]: 3552 [0], given: 123

Manager
Joined: 04 Jun 2012
Posts: 54

Kudos [?]: 29 [0], given: 5

Re: All intelligent people are nearsighted. I am very [#permalink]

### Show Tags

08 Jun 2013, 21:48
I wonder whether this kind of questions are asked on GMAT!

Kudos [?]: 29 [0], given: 5

Non-Human User
Joined: 01 Oct 2013
Posts: 10127

Kudos [?]: 270 [0], given: 0

Re: All intelligent people are nearsighted. I am very [#permalink]

### Show Tags

07 Jun 2017, 22:23
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.

Kudos [?]: 270 [0], given: 0

Re: All intelligent people are nearsighted. I am very   [#permalink] 07 Jun 2017, 22:23
Display posts from previous: Sort by

# All intelligent people are nearsighted. I am very

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

Moderators: GMATNinjaTwo, GMATNinja

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.