to lawyer thanx -条件结论型’的WEAKEN

bobomomo

lawyer 在你提供的逻辑总结的地方说WEAKEN 的时候 有一种题型是 ：条件结论型的那种！结论带条件，您（呵呵 说您真的怪怪的 但BOBO 真的找不出别的代词了）还说了几种WEAKEN 的方法！我以前做T 的时候可能没留意 一直没注意过这种类型

刚才在看FF 的时候，看到一个WEAKEN  88 T

88. Court records from medieval France show that in the years 1300 to 1400 the number of people arrested in the French realm for “violent interpersonal crimes” (not committed in wars) increased by 30 percent over the number of people arrested for such crimes in the years 1200 to 1300. If the increase was not the result of false arrests, therefore, medieval France had a higher level of documented interpersonal violence in the years 1300 to 1400 than in the years 1200 to 1300.

Which one of the following statements, if true, most seriously weakens the argument?

(A) In the years 1300 to 1400 the French government’s category of violent crimes included an increasing variety of interpersonal crimes that are actually nonviolent.

(B) Historical accounts by monastic chroniclers in the years 1300 to 1400 are filled with descriptions of violent attacks committed by people living in the French realm.

(C) The number of individual agreements between two people in which they swore oaths not to attack each other increased substantially after 1300.

(D) When English armies tried to conquer parts of France in the mid-to late 1300s, violence in the northern province of Normandy and the southwestern province of Gascony increased.

(E) The population of medieval France increased substantially during the first five decades of the 1300s, until the deadly bubonic plague decimated the population of France after 1348

这里题目的结论带IF 的是不是你说的那种情况呢 ！虽然这T 的答案是A 是用他因削弱的！想确认一下这种题目是不是可以出成你说的那类T 的TYPE ，因为以前做T 从没仔细想过这些东西 所以根本没留意过！如果方便能给BOBO 举个例子说一下下你说的‘条件结论型’的WEAKEN 吗？

谢谢

lawyer_1

1。直接叫LAWYER就行了，别让我觉得怪怪。

2。该题的确是条件型结论。其实条件型结论就是一句充分必要句，有充分条件，也有必要条件。简单说带有IF。见“跟LAWYER学逻辑”中充分必要条件指示词。

3。条件型结论的WEAKEN总原则是：否定充分条件一定能推出必要条件的情形。可以举反例或说明说有充分条件，却没必要条件。比如该题，如果A是真的，则在结论充分条件（ If the increase was not the result of false arrests），必要条件（higher level of documented interpersonal violence in the years 1300 to 1400 than in the years 1200 to 1300. ）可以不成立。因为可能在interpersonal violence in the years 1300 to 1400 中，有很多是actually nonviolent。

bobomomo

谢谢LAWYER 啊！明天把那个指示词的看一下 ！

但可以说 这T A 的思路其实是他因削弱吗？是不是大部分充分结论性的 都是通过他因削弱的呢？

meteorstar

有没有人在帮我 clarify一下，A中明显说category of violent crimes 中有归错类的情况，但是结论的总结是violent interpersonal crimes啊。人家没否定结论啊

meteorstar

明白了，是说violent里面的violent inter归错类，为什么总经不当。。。。。。。。。。。