请老师翻译下面加粗的句子，如果可以的话，麻烦帮忙解释一下这句话，是习语还是什么？

And should it not do so,that too would be valuable information. Scientists often make the case for the value of negative results. By making it so much harder to believe in longstanding theories,this would be the most important null result in the history of physics.

My views upon the understanding of the above sentences are also slightly different from the two teachers. My comprehensions are as follow:

我的理解与“英文问答和语法探讨”也略有不同，我的理解如下：

 Scientists often make the case for the value of negative results. 

参考译文(1)：科学家们经常陈述负面结果价值存在的理由。

参考译文(2)：科学家们经常证明负面结果价值存在的理由。

参考译文(3):科学家们经常证明负面结果存在的价值。

(备注：make the case for sth为某事的存在/为某事寻找/陈述理由/根据；或者证明某事的存在/某事的发生是合理的。)

(the value of negative result 负面结果/否定结果的价值/作用；呈阴性的结果)

case (用以证明或反驳的)事实，根据，理由 (英文解释：The case for or against a plan or idea consists of the facts and reasons used to support it or oppose it.）

He sat there while I made the case for his dismissal.  

他坐在那儿，听我陈述解雇他的理由。

Both these facts strengthen the case against hanging.  

这两项事实使反对绞刑的理由更加充分。