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Dobson: Some historians claim that the people who built a

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Dobson: Some historians claim that the people who built a [#permalink] New post 17 Jul 2010, 15:13
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A
B
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E

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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’s drawing the conclusion relies on interpreting a key term in two different ways.
[Reveal] Spoiler: OA

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Re: Dobson [#permalink] New post 17 Jul 2010, 19:57
A it is

Statement: Some historians claim that the people who built a ring of stones thousands of years ago in Britain were knowledgeable about celestial events.
Evidence: 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.
Statement: 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>>CORRECT
(B) Dobson’s conclusion logically contradicts some of the evidence presented in support of it.>>thought that this one is close, but..the conclusion in the argumnt is strongly suported by the premise(evidence).
(C) Statements that absolutely establish Dobson’s conclusion are treated as if they merely give some support to that conclusion>>OOS
(D) Something that is merely a matter of opinion is treated as if it were subject to verification as a matter of fact>>OOS
(E) Dobson’s drawing the conclusion relies on interpreting a key term in two different ways>>just 1n only way. no 2 ways
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Re: Dobson [#permalink] New post 18 Jul 2010, 02:19
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Conclusion : is based upon the "chance that " ---> this is NOT a proof. Hence its failing to ESTABLISH a statement. the people "were not knowledgeable about celestial events."

A it is.

E : interpreting a key term ----> If this is referring to "pair of stones". In both instances the pair points in the significant direction. Interpretation was not done in different way - just one way.
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Re: Dobson [#permalink] New post 18 Jul 2010, 03:00
A is the answer.
Dobson's problem is that he fails to make a statement.
The statement should be something like: the pair of stones doesn't point in a celestially significant direction.
The way he put it is just a doubt. If his conclusion was this one instead: "there is a large chance that the people who build the ring were not knowledgeable about celestial events", then his reasoning would be correct. So he didn't make a statement yet, but he brings up a strong conclusion, so the problem is either his reasoning or his conclusion. Since this exercise counts on Dobson keeping his conclusion unchanged, then the problem is his reasoning.
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Re: Dobson [#permalink] New post 23 Jul 2010, 10:12
A for me..
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Re: Dobson [#permalink] New post 31 Jul 2010, 13:12
got it wrong need to look in again .......went with E
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Re: Dobson [#permalink] New post 12 Sep 2010, 03:33
IMO A
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Re: Dobson [#permalink] New post 12 Sep 2010, 03:47
I will go with A

B out of scope
C weak or general statement but a close call
D trap with intricate language.
E key term?? OOS
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Re: Dobson [#permalink] New post 16 Sep 2010, 05:52
will go for A
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Re: Dobson [#permalink] New post 16 Sep 2010, 06:12
I will go with A.
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Re: Dobson [#permalink] New post 16 Sep 2010, 06:17
IMO A.
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Re: Dobson [#permalink] New post 10 Apr 2011, 18:02
The answer is A.
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Re: Dobson [#permalink] New post 14 Jun 2011, 02:48
Crystal A here,as the evidence itself has been used to falsify the interpretation.
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Re: Dobson [#permalink] New post 14 Jun 2011, 12:07
noboru wrote:
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’s drawing the conclusion relies on interpreting a key term in two different ways.


Good one!!!

"A"
Dobson conclusion is flawed because it concluded the theory WRONG just because the reasoning used in support of the historians' claim was flawed or inept.

I was stuck because I thought "A" was mere a method of reasoning, and not the reasoning error and then I saw "statement is FALSE". The claim by historians may not be false, Dobson, the reasoning used to support historians' claim was false.
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Re: Dobson   [#permalink] 14 Jun 2011, 12:07
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