求翻译：就是源于我们对所需要的物料做了实地考察，并做了客观对比才得到了这些重要的信息资料。我们肯定不能做“秀才不出门，全知天下事”。是什么意思？

Is derived from the materials we need to do a site inspection, and do an objective comparison to get these important information. We certainly cannot do "a scholar does not go out, he knows".