[T]he successes of modern control theory in the design of highly accurate space navigation systems have stimulated its use in the theoretical analyse… - Lotfi A. Zadeh

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[T]he 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.