逻辑题，错误选项（双重否定）求解析

HANgreUID: 3421044

题源，新GRE阅读逻辑10套2014-01，第10套，第4题

It takes a particular talent to be a successful business manager. Business courses can help people to solve management problems, but such courses can do so only for those people with managerial talent. Such people should take business courses to acquire ideas that they can subsequently use to good advantage if management problems happen to arise.

If the statements above are true, which of the following must also be true on the basis of them?

(A) People who are helped by business courses in solving management problems also have managerial talent.
(B) People who are already skilled at solving management problems are unlikely to benefit from business courses.
(C) Most ideas that are used successfully in solving management problems are those acquired in business courses.
(D) People who lack managerial talent are more likely to take business courses than are people who have managerial talent.
(E) Those people who have never taken business courses are unable to solve management problems when such problems arise.

正确答案是(A) ，我也能理解为什么是(A)；但就是想了解一下(E) 为什么错？这样双否的表达有什么逻辑错误嘛？

谢谢各位！盼复！

longoliverUID: 3280001

我理解是这样的（不一定对哈）
Business courses 可以帮助解决  management problems， 但前提是with managerial talent
但可没说Business courses是解决management problems的唯一途径啊
因为很可能一些人没有managerial talent也可以解决  management problems，只是他们不能从Business courses的渠道，获得解决的方法

JovantUID: 3048370

我是这样理解的：

题目说，course可以让人受益，但前提是让那些有talent的人受益。
隐含的意思：那些没有talent的人，就算上了course，也不一定会受益。

选项A的意思：那些受益了的人，一定是有talent的人，符合（因为只有有talent的人才会受益）
选项E：那些没上课的人，一定解决不了问题。

但题目只说：有talent的人上了课可以解决问题，但并不等于 “不上课就一定解决不了问题”

HANgreUID: 3421044

Jovant 发表于 2014-8-22 18:32
我是这样理解的：

题目说，course可以让人受益，但前提是让那些有talent的人受益。

解释的很清楚。明白E的逻辑错误了，我片面的以为双重否定表肯定了。。谢谢～～

HANgreUID: 3421044

longoliver 发表于 2014-8-22 18:29
我理解是这样的（不一定对哈）
Business courses 可以帮助解决  management problems， 但前提是with mana ...

谢谢，我觉得这样理解蛮合理的，的确是非唯一性