“A new concept and a new method were needed. The concept from the engineering standpoint is the evolution of the engineering scientist, i. e., the scientific generalist who maintains a broad outlook. The method is that of the team approach. On large-scale-system problems, teams of scientists and engineers, generalists as well as specialists, exert their joint efforts to find a solution and physically realize it.
We are led to the concept of the system-design team, a small group of engineers or scientists, to lead a large project and organize the system effort. Such men have been variously called engineering scientists, system engineers, system analysts, or large-scale-system designers. The technique has been variously called the systems approach or the team development method. It is toward this man and his teammates that these discussions are directed. With the realization that not enough can be learned in all the required fields to make him a specialist, enough is introduced to make him aware of the language and problems of the specialist. This generalist is a new quantity in the engineering world, and his education must be begun.”

Source: Software Engineering: Principles and Practice, 2007, p. 2

Source: The Mechanism of Economic Systems (1953), p. v

Statement of 1992, quoted in Introduction to Statistical Experimental Design — What is it? Why and Where is it Useful? (2002) Johan Trygg & Svante Wold

Source: Systems Engineering Tools, (1965), Systems Engineering Methods (1967), p. vii

Systems Movement: Autobiographical Retrospectives (2004)

Source: Mathematicians are useful (1971), p. 1

Source: Executable Modeling with UML. A vision or a Nightmare (2002), p. 697

Source: Systems engineering and Modern Engineering Design (1965), p. 1.

Source: A Mathematical Theory of Systems Engineering (1967), p. 193.