The 20th century, the last hundred years, is riddled with disastrous examples of times that one school or the other tried to explain the past or predict the future and just did an awful, awful job, so the economics profession has acquired some degree of modesty.
20世纪，过去这一百年， 充满了灾难性的例子的时候， 有一所学校或其他学校试图解释 过去或预测未来， 只是做了一个可怕的工作， 所以经济学界已经变得很谦逊了。