The great economist Baumol threw out the “cost disease” half a century ago this concept. At that time, the United States was experiencing unprecedented gold growth. 　　However, from government officials to economists to the general public, “cost disease” is full of out-of-context misunderstandings, making it difficult to make a comprehensive and correct diagnosis and treatment. Fortunately, the Chinese version of Baumol’s book “Growing Trouble: Baumol’s Disease and Its Response” was published in time, which may help stop the spread of specious and dangerous perceptions. 1. The essence of cost disease: the trouble of unbalanced growth 　　There is no denying that cost disease is an annoyance. In 1817, it took four…