Dobson: Some historians claim that the people who built a : GMAT Critical Reasoning (CR)
Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 21 Feb 2017, 02:25

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

Dobson: Some historians claim that the people who built a

Author Message
TAGS:

Hide Tags

Manager
Joined: 10 Jan 2009
Posts: 105
Followers: 2

Kudos [?]: 37 [0], given: 2

Dobson: Some historians claim that the people who built a [#permalink]

Show Tags

19 Apr 2009, 05:03
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 1 sessions

HideShow timer Statistics

Dobson: Some historians claim that the people who built a ring of stones thousands of years ago in Britain were knowledgeable about celestial events. The ground for this claim is that two of the stones determine a line pointing directly to the position of the sun at sunrise at the spring equinox. There are many stones in the ring, however, so the chance that one pair will point in a celestially significant direction is large. Therefore, the people who built the ring were not knowledgeable about celestial events.

Which one of the following is an error of reasoning in Dobson's argument?

A) The failure of cited evidence to establish a statement is taken as evidence that that statement is false.

B) Dobson's conclusion logically contradicts some of the evidence presented in support of it.

C) Statements that absolutely establish Dobson's conclusion are treated as if they merely give some support to that conclusion.

D) Something that is merely a matter of opinion is treated as if it were subject to verification as a matter of fact.

E) Dobson is not a scientist.
If you have any questions
New!
Senior Manager
Joined: 21 Apr 2008
Posts: 497
Schools: Kellogg, MIT, Michigan, Berkeley, Marshall, Mellon
Followers: 9

Kudos [?]: 52 [0], given: 13

Re: CR : LSAT : ring of stones [#permalink]

Show Tags

19 Apr 2009, 10:42
Hi mates,

for me these questions are always very difficult

I'd go with B

OA?

Thanks
_________________

http://gmatclub.com/forum/johnlewis1980-s-profile-feedback-is-more-than-welcome-80538.html

I'm not linked to GMAT questions anymore, so, if you need something, please PM me

I'm already focused on my application package

My experience in my second attempt
http://gmatclub.com/forum/p544312#p544312
My experience in my third attempt
http://gmatclub.com/forum/630-q-47-v-28-engineer-non-native-speaker-my-experience-78215.html#p588275

Director
Joined: 23 May 2008
Posts: 838
Followers: 3

Kudos [?]: 72 [0], given: 0

Re: CR : LSAT : ring of stones [#permalink]

Show Tags

19 Apr 2009, 16:35
A
SVP
Joined: 17 Jun 2008
Posts: 1569
Followers: 11

Kudos [?]: 252 [0], given: 0

Re: CR : LSAT : ring of stones [#permalink]

Show Tags

21 Apr 2009, 00:14
A.
If the chance is large that one pair of stones will point in a specific direction, this definitely does not conclude that the people were not knowledgeable about celestial events.
Manager
Joined: 10 Jan 2009
Posts: 105
Followers: 2

Kudos [?]: 37 [0], given: 2

Re: CR : LSAT : ring of stones [#permalink]

Show Tags

21 Apr 2009, 14:23
OA OE

18. (A)
The claim that Dobson tries to rebut—that the ancient builders of this ring of stones must
have known about celestial events—is based on the provocative fact that a line drawn
between two of the stones points to a significant phenomenon in the sky. Phooey, says
Dobson—there are many stones in the ring, so many that the odds of any two pointing in a
provocative way are huge. But not content to leave well enough alone, Dobson announces
that he has proved that the ancients didn’t know about celestial events. Whoa! Maybe the
evidence for the original claim is skimpy, but Dobson goes too far in claiming that that
skimpiness proves the claim false. That’s what (A) is getting at. Let’s try an analogy—a
parallel argument, as it were. Suppose you argue that the players on the Columbus Kings
football team must be churchgoers, because every Sunday I see some of them walking
toward a church. Well, in response, I could argue that that evidence is insufficient, that it
doesn’t prove your point, that any of them could be seen walking towards some house of
worship; but I cannot say that I have therefore proved that the players aren’t churchgoers!
This is essentially the same error that the stimulus author commits.
(B) Dobson’s evidence contradicts the original claim. That’s what a rebuttal does. But he
(C) As described above, the evidence falls far short of “absolutely establishing” Dobson’s
conclusion.
(D) Whether the ancients knew about celestial events is a question subject to factual
verification and not a matter of opinion. Of course, the right kind of evidence must be
assembled, which is why (A) is correct. But it is a fact-based dispute.
(E) Dobson equivocates on no term, key or otherwise (“equivocation” means using the
same word in two different meanings or senses). He changes no meanings en route.
• Pre-phrase an answer to each Logical Flaw question, and try hard to find a choice
that matches your pre-phrasing. Without pre-phrasing, you can waste an awful lot of
time browsing among the choices.
Manager
Joined: 05 Dec 2009
Posts: 127
Followers: 2

Kudos [?]: 87 [0], given: 0

Re: CR : LSAT : ring of stones [#permalink]

Show Tags

13 Mar 2010, 12:20
A
Re: CR : LSAT : ring of stones   [#permalink] 13 Mar 2010, 12:20
Similar topics Replies Last post
Similar
Topics:
14 Sociologist: Romantics who claim that people are not 4 19 Nov 2013, 02:24
4 Sociologist: Romantics who claim that people are not born 4 27 Nov 2012, 03:23
2 Dobson: Some historians claim that the people who built a 14 17 Jul 2010, 15:13
People who discontinue regular exercise typically claim that 9 03 Apr 2010, 11:37
1 Dobson: Some historians claim that the people who built a 2 01 Jan 2009, 11:12
Display posts from previous: Sort by