The successes of modern control theory in the design of highly accurate space navigation systems have stimulated its use in the theoretical analyses of economic and biological systems. Similarly, the effectiveness of computer simulation techniques in the macroscopic analyses of physical systems has brought into vogue the use of computer-based econometric models for purposes of forecasting, economic planning, arid management.
Go to the bookstore and look at how many bookshelves are filled with books trying to explain how to work the devices. We don't see shelves of books on how to use television sets, telephones, refrigerators or washing machines. Why should we for computer-based applications?donald norman