文章立意明确、新颖,善于捕捉“知足者常乐”所带来的负效应,提出“不知足者常乐”的观点,进而进行阐明和分析,说明它是社会进步的动力、人类创新的源泉,给人焕然一新的感觉。 The article is clear and innovative, and is good at capturing the negative effects brought about by the “contented people who often enjoy music.” It puts forward the idea of ​​“unpleased people and constant music” and then clarifies and analyzes it. It shows that it is the driving force of social progress and the source of human innovation. It gives a new look.