Dobson: Some historians claim that the people who built a : GMAT Critical Reasoning (CR)
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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]

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New post 22 Apr 2005, 05:51
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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.

Hi, I know this has been posted before. But I need your explicit explanation, thanks.
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New post 22 Apr 2005, 15:53
go with (A).

Evidence: two of the stones determine a line pointing directly to the position of the sun at sunrise at the spring
equinox.

Since the evidence fails to establish the conclusion, Dobson concluded that this whole statement is crap.
  [#permalink] 22 Apr 2005, 15:53
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