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.
(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.
我认为A的逻辑是：疫苗没用，说它有效的研究肯定也是错的。
犹豫了3分钟，选了个B。答案是C。怎么也看不懂。
不知道我的方法到底出了什么问题，也按LAWYER方法对一些题目进行了分类总结，但逻辑始终无长进，始终徘徊在70%的正确率，且平均耗时2min/题，该如何是好。
Dr. A commits a logic fallacy called circular reasoning. Check it up.
-- by 会员 sdcar2010 (2012/2/19 23:17:23)