Quote by Russell Ackoff
[Mistake 2:] Managers need all the information they want. Most MIS designers "determine" what information is needed by asking managers what information they would like to have. This is based on the assumption that managers know what information they need and want.
As cited in: Merrill J. Riley (1981) Management information systems. p. 114.
MIS -> Management Information System
Customer focus is important (listening to what customers, in this case managers, think they need) but that is often not enough. As a value added provider thinking beyond what customers themselves know about their needs is important.
Please suggest source details if you know: book, page, year, online article address (url), correction (different author...), etc.. Thanks.