GA2020.7.19

David's Time With Peter F. Drucker 2020.7.19 冠鼎学院（GA）——识别·培养·考验未来的领导者 This is just as true of the specialty mass magazines——whether written for the layman who wants to know about medicine or for the plumber who wants to know what goes on in the plumbing business. THEY INFORM. And above all, they inform about the OUTSIDE. The specialty mass magazine tells the reader in a profession, a trade, an industry what goes his or her own business, shop or office——about the competition, about new products and new technology about developments in other countries and above all, about people in the profession, the trade, the industry. ——《Management Challenges for the 21st Century · Chapter4 Information Challenges》(Peter F.Drucker,1999)