推荐人语:成语“班门弄斧”的意思就是在行家面前卖弄本事,这固然不足取,但在行家面前缩手缩脚也大可不必。人是要有一点精神的,在鲁班面前“有斧不妨弄一弄”,既要敢于弄斧,又要善于弄斧,年轻人应该有这样的勇气与见识,惟其如此,才能使科学文化、人类社会在否定之否定中进步。本文以科学史上三个雄辩的事实较为深刻地论述了这个道理。 Recommended language: The idiom “to make a fuss” means to show off the talent in front of the connoisseurs. This is certainly not enough, but there is no need to shrink your hands in front of the experts. People need to have a little spirit. Before Luban, there is “Axe can’t get it done”. It is necessary to dare to get axe and be good at getting axe. Young people should have such courage and knowledge. Only in this way can science and culture be Human society progresses in the negation of negation. This article elaborates on this truth with three eloquent facts in the history of science.