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Manager
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23 Sep 2010, 21:22
00:00

Difficulty:

75% (hard)

Question Stats:

40% (01:51) correct 60% (01:07) wrong based on 25 sessions

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A new voice-recognition system can limit access to airplane controls, including those required to pilot the aircraft, to those people who have been licensed to fly the aircraft. The system identifies the persons voice by analyzing not only the tone of the voice, but also characteristics such as accent, speaking speed, and volume. Even the most adept impersonators cannot duplicate all the characteristics that the system takes into consideration.

Which statement can most logically be concluded from the above passage?

(A) No one can fly an airplane equipped with the system solely by virtue of their skill at impersonating voices.
(B) In case of a major emergency this system could lead to a terrible airplane crash and will not, for that reason, be used by major airlines.
(C) This voice-recognition system is the culmination of many years and millions of dollars of research and development.
(D) In the wake of 9/11, most airplanes will soon be equipped with these systems to prevent terrorist attacks.
(E) Even authorized pilots can be barred from flying their own planes if something is amiss in their voice.

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[Reveal] Spoiler: OA
Manager
Joined: 23 Sep 2009
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23 Sep 2010, 22:04
I chose 'E'.
But A also looks good....
So does 'E' mean the inference form the passage?
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Manager
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23 Sep 2010, 22:53
Even I chose E and was not convinced that it is incorrect. I am not against A but felt it was weaker than E. Impersonation means all the things, the accent, speed, volume etc... consider people who mimic for a living..they would try to match all such characteristics.

Well, let us see what others think of it.
Manager
Joined: 19 Sep 2010
Posts: 176

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24 Sep 2010, 02:31
I also went for E , The claim in A seems to be extreme . Had it been "Most people" rather than "No one" , I would have gone for A . We can have a possibility of sm1 impeccably impersonating the attributes of legitimate user and passing that test . In other words , what i mean is :No system can be perfect.
Intern
Joined: 19 Aug 2010
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24 Sep 2010, 02:32
Even I choose E.Can anyone explain why it is A
Manager
Joined: 24 Jun 2010
Posts: 141
Concentration: Strategy, Technology

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24 Sep 2010, 05:02
I went with A, but E did look tempting. However, after considering the possibility that there might be some "backdoor" for licensed pilots it did not look as good anymore.

Also, A refers to planes equipped with the system while E does not.

I felt A's extreme language matched up with the stimulus where it said

Quote:
No one can fly an airplane equipped with the system solely by virtue of their skill at impersonating voices.

with

Quote:
Even the most adept impersonators cannot duplicate all the characteristics that the system takes into consideration.
Manager
Joined: 15 Apr 2010
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24 Sep 2010, 05:13
I too fell for E but the conclusion of an argument must capture the main point of the passage and on a closer look E fails to do so.

The jist of the argument is that since the voice-recognition system identifies the persons voice by analysing his/her tone, accent, speaking speed and volume, nobody can fly the airplane just by the virtue of their skill at impersonating voices. Hence the answer should be A.

E is something that can be inferred but not concluded.
Manager
Joined: 19 Sep 2010
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24 Sep 2010, 05:15
@above..
Inference need not be the main point . For main point , it is explicitly
mentioned to point out the "Main point" of the passage..
Manager
Joined: 15 Apr 2010
Posts: 168

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24 Sep 2010, 05:44
Raths wrote:
@above..
Inference need not be the main point . For main point , it is explicitly
mentioned to point out the "Main point" of the passage..

I haven't indicated anywhere in my post that Inference is the main point... please re-read. Also conclusion questions require you to find the main point of the passage which is what this question is asking you to do. The various forms this question type can take are:
1) Which of the following expresses the main conclusin of the argument?
2) Which of the following most accurately states the main point of the argument?
3) The main point of the argument is that....
Director
Status: No dream is too large, no dreamer is too small
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24 Sep 2010, 05:59
Senior Manager
Joined: 25 Feb 2010
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24 Sep 2010, 08:13
Nice question ....
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Manager
Joined: 17 Apr 2010
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24 Sep 2010, 09:02
IMO A

(A) No one can fly an airplane equipped with the system solely by virtue of their skill at impersonating voices.
As the tone of the argument is positive towards the new voice recognition system , i think the inference should be positive as well.

(B) In case of a major emergency this system could lead to a terrible airplane crash and will not, for that reason, be used by major airlines.
This is negative inference

(C) This voice-recognition system is the culmination of many years and millions of dollars of research and development.
Irrelevant(D) In the wake of 9/11, most airplanes will soon be equipped with these systems to prevent terrorist attacks.
Too Narrow

(E) Even authorized pilots can be barred from flying their own planes if something is amiss in their voice.
Negative inference

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Senior Manager
Joined: 18 Jun 2010
Posts: 300
Schools: Chicago Booth Class of 2013

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24 Sep 2010, 11:29
tiruraju wrote:
IMO A

(A) No one can fly an airplane equipped with the system solely by virtue of their skill at impersonating voices.
As the tone of the argument is positive towards the new voice recognition system , i think the inference should be positive as well.

No, your explanation is not good enough. But after searching throughout the Internet I have not found anything better Only the following, but it's not brilliant...

(A) This matches what we wrote as the answer to the question. Keep.
(B) No mention is made of emergencies. Eliminate.
(C) No mention is made of the development time of this system. Only that it is new. Eliminate.
(D) No mention of 9/11 is made. Eliminate.
(E) This is speculative since the prompt only mentions impersonators. Eliminate.

Compare Remaining Choices
(A) is the only choice remaining and is correct. Choose
Manager
Joined: 22 Jun 2010
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24 Sep 2010, 13:31
I eliminated B,C and D
E is very tempting and really hard to ignore it
But I picked A
I suppose Financier is quite right!
Manager
Joined: 04 Aug 2010
Posts: 154

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24 Sep 2010, 17:58
+1 for A

E is not a direct conclusion from the passage. There's not enough information from the original passage that allows us to say for sure the voice system won't recognize an authorized pilot if something happens to his voice.
Re: Voice pilot   [#permalink] 24 Sep 2010, 17:58
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