Classification ■ Classification:Natural systems,Social Systems,Man Made System(Complex systems) What type of systems have you worked on(with)? ■ Why do you call it systems? This course focuses on the man-made Design and Social Development of Large System Complex Systems complex systems Natural Technical System System System Engineering by J.J.Gao CLGO 18+ Classification -  Classification: Natural systems, Social Systems, Man Made System(Complex systems)  What type of systems have you worked on(with)?  Why do you call it systems? This course focuses on the man on the man-made complex systems ! System Engineering by J. J. Gao 18