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Senior Manager
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Dr. A: The new influenza vaccine is useless at best and [#permalink]
 08 Sep 2006, 23:25
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Dr. A: The new influenza vaccine is useless at best and possibly dangerous. I would never use it on a patient.
Dr. B: But three studies published in the Journal of Medical Associates have rated that vaccine as unusually effective.
Dr. A: The studies must have been faulty because the vaccine is worthless.
In which of the following is the reasoning most similar to that of Dr. A?
(A) Three of my patients have been harmed by that vaccine during the past three weeks, so the vaccine is unsafe.
(B) Jerrold Jersey recommends this milk, and I don’t trust Jerrold Jersey, so I won’t buy this milk.
(C) Wingzz tennis balls perform best because they are far more effective than any other tennis balls.
(D) I’m buying Vim Vitamins. Doctors recommend them more often than they recommend any other vitamins, so Vim Vitamins must be good.
(E) Since University of Muldoon graduates score about 20 percent higher than average on the GMAT, Sheila Lee, a University of Muldoon graduate, will score about 20 percent higher than average when she takes the GMAT.
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CEO
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C - Circular argument
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SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008
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yeah..C is my choice..another reason is lack of evidence in C and Dr A's statements
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Director
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C it is for circular argument.
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Manager
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Can you guys please explain what circular reasoning is or if you can provide a link, it would be great?
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"Success is 99 percent failure" - Soichiro Honda
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I think there is a B on our hands here.
I think milk is unsafe.
But Jerrald told me it is great
Jerrald must be wrong, milk is unsafe
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rookie06 wrote: Can you guys please explain what circular reasoning is or if you can provide a link, it would be great?
In circular reasoning, you assume what you are supposed to prove. Am I right Dahiya? 
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The path is long, but self-surrender makes it short;
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Senior Manager
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This seems like an LSAT question. is this type common in GMAT?
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CEO
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ak_idc wrote: rookie06 wrote: Can you guys please explain what circular reasoning is or if you can provide a link, it would be great? In circular reasoning, you assume what you are supposed to prove. Am I right Dahiya? Absolutely correct.
When author try to prove something using the conclusion itself then it is called circular argument.
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SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008
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Senior Manager
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I hate to disagree with the gurus but I think B
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Senior Manager
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OA is C
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I don't get it
"In circular reasoning, you assume what you are supposed to prove"
In this passage, what is the assumption and what is the conclusion?
Thanks
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redbeanaddict wrote: I don't get it
"In circular reasoning, you assume what you are supposed to prove"
In this passage, what is the assumption and what is the conclusion?
Thanks
Dr A instead proving his claim with an evidence is directly saying that the medicine is worthless. Instead of saying how studies are faulty, he is saying they are faulty. This way he is assuming what is supposed to prove.
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The path is long, but self-surrender makes it short;
the way is difficult, but perfect trust makes it easy.
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tennis ball is correct.
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