Every photograph, because it involves the light rays that : GMAT Critical Reasoning (CR)
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 18 Jan 2017, 23:41

### 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

# Every photograph, because it involves the light rays that

Author Message
TAGS:

### Hide Tags

Senior Manager
Joined: 08 Jan 2009
Posts: 329
Followers: 2

Kudos [?]: 149 [0], given: 5

Every photograph, because it involves the light rays that [#permalink]

### Show Tags

25 Aug 2009, 19:22
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (00:00) wrong based on 3 sessions

### HideShow timer Statistics

Every photograph, because it involves the light rays that something emits hitting film, must in some obvious sense be true. But because it could always have been made to show things differently than it does, it cannot express the whole truth and, in that sense, is false. Therefore, nothing can ever be definitively proved with a photograph.
Which one of the following is an assumption that would permit the conclusion above to be properly drawn?
(A) Whatever is false in the sense that it cannot express the whole truth cannot furnish definitive proof.
(B) The whole truth cannot be known.
(C) It is not possible to determine the truthfulness of a photograph in any sense.
(D) It is possible to use a photograph as corroborative evidence if there is additional evidence establishing the truth about the scene photographed.
(E) If something is being photographed, then it is possible to prove definitively

[Reveal] Spoiler:
A
If you have any questions
New!
Senior Manager
Joined: 29 Jul 2009
Posts: 314
Followers: 4

Kudos [?]: 319 [1] , given: 9

### Show Tags

26 Aug 2009, 07:44
1
KUDOS
This question is kind of difficult a got it wrong the first time I saw it. I think the best approach is to diagram the question

Every photograph, because it involves the light rays that something emits hitting film, must in some obvious sense be true.

Every photograph ---> must in some obvious sense be true.
Notice that an assumption here is that
something involves the light rays that something emits hitting film ---> must be in some obvious sense be true

But because it could always have been made to show things differently than it does, it cannot express the whole truth and, in that sense, is false.

(2) photograph ---> cannot express the whole truth and, in that sense, is false

nothing can ever be definitively proved with a photograph.

(3) photograph ---> cannot definitely proved anything

If you want to join the premise (2) and the conclusion (3) you need to assume that

X cannot express the whole truth and, in that sense, is false ---> X cannot definitely proved anything

(A) is a rephrase of this assumption
Senior Manager
Joined: 18 Aug 2009
Posts: 435
Schools: UT at Austin, Indiana State University, UC at Berkeley
WE 1: 5.5
WE 2: 5.5
WE 3: 6.0
Followers: 8

Kudos [?]: 121 [0], given: 16

### Show Tags

26 Aug 2009, 03:21
Such a complicated critical reasoning, Pls need explanation
_________________

Never give up,,,

Manager
Joined: 12 Aug 2008
Posts: 185
Location: Buffalo, NY
Schools: Simon '11
Followers: 1

Kudos [?]: 15 [0], given: 1

### Show Tags

26 Aug 2009, 05:04
I believe that the answer here is A.

Every photo is true in one sense, but because it is someone's specific point of view, it cannot objectively show the "whole truth". If it cannot show the "whole truth" than it cannot be used as definitive proof of anything.

Choice A provides the connection between not showing the whole truth and not being definitive proof of something.

B) Doesn't matter in the context of this argument. In fact, may actually weaken the author's point.
C) The author explicitly says that every photograph is true in at least one way
D) Outside of scope, the author never says anything about outside evidence
E) This totally contradicts the authors point. He says that it is NOT possible to prove definitely.
Manager
Affiliations: CFA Level 2 Candidate
Joined: 29 Jun 2009
Posts: 221
Schools: RD 2: Darden Class of 2012
Followers: 3

Kudos [?]: 210 [0], given: 2

### Show Tags

26 Aug 2009, 07:28
After my mind exploded from this question - I agreed with A

Conclusion
Therefore, nothing can ever be definitively proved with a photograph.

(B) The whole truth cannot be known. - Out of Scope, the whole truth could be known in other "non photograph ways"
(C) It is not possible to determine the truthfulness of a photograph in any sense. - Author states we can obtain the truth in the obvious sense.
(D) It is possible to use a photograph as corroborative evidence if there is additional evidence establishing the truth about the scene photographed. - Irrelevant to the argument
(E) If something is being photographed, then it is possible to prove definitively - contradicts conclusion

(A) Whatever is false in the sense that it cannot express the whole truth cannot furnish definitive proof.

Fact
Photographs are A (obvious truth) but not B (whole truth).

Initially definitive proof can be defined as being A or B. The assumption that definitive proof can't actually B completes the link and say Photographs can't be definitive proof.
Re: cr3   [#permalink] 26 Aug 2009, 07:28
Similar topics Replies Last post
Similar
Topics:
2 For every 100 automobile drivers who are involved in a 5 23 Jul 2011, 10:38
Every photograph, because it involves the light rays that 4 18 Nov 2009, 09:39
Every year many people become ill because of airborne mold 0 14 Apr 2013, 18:50
33 Every year many people become ill because of airborne mold 54 15 May 2007, 20:10
Every photograph, because it involves the light rays that 0 08 Apr 2016, 04:01
Display posts from previous: Sort by