Journalist: In physics journals, the number of articles reporting the results of experiments involving particle accelerators was lower last year than it had been in previous years. Several of the particle accelerators at major research institutions were out of service the year before last for repairs, so it is likely that the low number of articles was due to the decline in availability of particle accelerators.
Which of the following, if true, most seriously undermines the journalist's argument?
这是个相关因果推理模式:
前提:accelerators out of service.文章的数量减少了,
结论:accelerators导致文章的数量减少了。
削弱模式:1,因果无联系,举出另外一个时期,文章数量减少,儿accelerator却没有out of service.
2,中间因素问题:accelerators out of service导致X, 而X导致文章数量减少。
3,独立第三因素:其他原因导致的,比如说:E选项。
4因果倒置,这两个事情发生的巧合是因为:是文章的数量减少导致accelerators out of service
然后:D选项说PA可以为多个实验所用,那么科学家岂不是可以做更多的实验,那么试验相关的文章也会增多呢。
我觉得楼上的理解有误,因为题目说了一个事实:是out of service,所以答案不可能是反对文章中的事实的吧?也就是PA的可利用没有降低是不对的。