1929年9月,欧美国家股市一片繁荣,身为美国华尔街一家金融机构法兰克福分公司的实习证券分析师,德鲁克运用经济计量工具,严谨地分析纽约股市,并乐观地预计繁荣可期。然而,10月24日,厄运来临,投资者信心崩溃,纽约股市于29日发生大崩盘,随后,危机迅速蔓延到全世界,整个世界随即陷 In September 1929, European and American stock markets were booming. As an intern securities analyst at the Frankfurt branch of a financial institution on the Wall Street in the United States, Drucker used economic measurement tools to rigorously analyze the New York stock market and optimistically expected prosperity. However, on October 24, bad luck came and investors’ confidence collapsed. The New York stock market collapsed on the 29th. After that, the crisis spread rapidly to the whole world,