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• (1972) • • (1989) • Fellow (1995) Scientific career Institutions (1956) Jay Wright Forrester (July 14, 1918 - November 16, 2016) was a pioneering American and. He was a professor at the. Forrester is known as the founder of, which deals with the simulation of interactions between objects in.

Life and career Forrester was born on a farm near, where 'his early interest in electricity was spurred, perhaps, by the fact that the ranch had none. While in high school, he built a wind-driven, 12-volt electrical system using old car parts--it gave the ranch its first electric power.' Forrester received his Bachelor of Science in Electrical Engineering in 1939 from the, was inducted in 1949 into () the Electrical & Computer Engineering Honor Society, and went on to graduate school at the, where he would spend his entire career. During the 1940s and early 50s, he did research in electrical and computer engineering, heading the, perfecting, and developing the 'multi-coordinate digital information storage device' (coincident-current system), the forerunner of today's. He is also believed to have created the first in the history of, a 'jumping ball' on an. In 1956, Forrester moved to the, where he was Germeshausen Professor Emeritus and Senior Lecturer. In 1961, arising from a project with, he wrote about the expanding effects down the due to fluctuations in demand, thenceforth known as the 'Forrester effect'.

In 1972, he received the, highest award. In 1982, he received the Computer Pioneer Award.

In 1995, he was made a Fellow of the 'for his perfecting of core memory technology into a practical computer memory device; for fundamental contributions to early computer systems design and development'. In 2006, he was inducted into the Operational Research Hall of Fame. Forrester was the founder of, which deals with the simulation of interactions between objects in. Industrial Dynamics was the first book Forrester wrote using system dynamics to analyze industrial business cycles.

Several years later, interactions with former led Forrester to write Urban Dynamics, which sparked an ongoing debate on the feasibility of modeling broader social problems. The urban dynamics model attracted the attention of urban planners around the world, eventually leading Forrester to meet a founder of the. He later met with the Club of Rome to discuss issues surrounding global sustainability; the book World Dynamics followed. World Dynamics took on modeling the complex interactions of the world, and, which was controversial (see also and ). It was the start of the field of. Forrester continued working in applications of system dynamics and promoting its use in education.

• Publications Forrester has written several books, articles and papers. Books, a selection: • 1961. Industrial dynamics. Waltham, MA: Pegasus Communications. Principles of Systems, 2nd ed. Pegasus Communications.

Urban Dynamics. Pegasus Communications.

World Dynamics. Wright-Allen Press. Collected Papers of Jay W.

Pegasus Communications. Articles and papers, a selection: • 1958.

'Industrial Dynamics--A Major Breakthrough for Decision Makers.' , in: Harvard Business Review, Vol.

4, pp. 37-66. • 1968, Market Growth as Influenced by Capital Investment in Industrial Management Review, Vol. 2, Winter 1968.

Also available. • 1989, System Dynamics and the Lessons of 35 Years.

• 1991, The Beginning of System Dynamics. • 1992, System Dynamics and Learner-Centered-Learning in Kindergarten through 12th Grade Education. • 1994, Learning through System Dynamics as preparation for the 21st Century. • 1996, System Dynamics and K-12 Teachers. • 1998, Designing the Future. • 1999, System Dynamics: the Foundation Under Systems Thinking.

Counterintuitive Behavior of Social Systems Counterintuitive Behavior of Social Systems is a 1971 paper by Jay Wright Forrester. In it, Forrester argues that the use of computerized system models to inform social policy is far superior to simple debate, both in generating insight into the root causes of problems and in understanding the likely effects of proposed solutions. Description Forrester characterizes normal debate and discussion as being dominated by inexact mental models: The mental model is fuzzy. It is incomplete.

It is imprecisely stated. Netbeans jemmy download. Furthermore, within one individual, a mental model changes with time and even during the flow of a single conversation. The human mind assembles a few relationships to fit the context of a discussion. As the subject shifts so does the model. When only a single topic is being discussed, each participant in a conversation employs a different mental model to interpret the subject.