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Forrester, Jay

Forrester, Jay

This article has been reviewed by the following Topic Editor: Tom Lawrence

Jay Forrester, (1918 -), an American engineer regarded as a pioneer in the development of early digital computer equipment. He is the founder of "system dynamics," the use of computer simulations to analyze social systems and predict the implications based on different model simulations. In 1944, the U.S. Navy contracted Forrester and colleague Robert Everett to develop a universal flight trainer and aircraft simulator. The result was Whirlwind, the first real-time electronic digital computer. Whirlwind's technology utilized the phenomenon that when current flows through a core, the core becomes magnetized even when the current is removed. The introduction of this kind of memory makes computers smaller in size, faster to access data, and more powerful. These attributes made Whirlwind the direct forerunner of the modern computer. Forrester's system dynamics theories were featured in the Limits to Growth (1972) written by Donella H. Meadows and others. Using system dynamics theory to construct a global computer model called "World3," the book presented 12 scenarios that revealed different possible patterns—and environmental outcomes—of world development over two centuries from 1900 to 2100. The book became a bestseller with over 30 million copies sold in more than 30 translations.

Further Reading
People and Discoveries: Jay Forrester (PBS Online)
What is System Dynamics? (The International Institute for Applied Systems Analysis (IIASA))

Citation

Cutler J. Cleveland (Lead Author);Tom Lawrence (Topic Editor) "Forrester, Jay". In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). [First published in the Encyclopedia of Earth January 26, 2009; Last revised Date January 26, 2009; Retrieved May 23, 2013 <http://www.eoearth.org/article/Forrester,_Jay>

The Author

Cutler J. Cleveland Cutler J. Cleveland  is Professor of Earth and Environment at Boston University, where he also is on the faculty of the Center for Energy and Environmental Studies. Professor Cleveland is Editor-in-Chief of the Encyclopedia of Energy (Elsevier, 2004), winner of an American Library Association award, the Dictionary of Energy (Elsevier, 2005), Handbook of Energy (Elsevier, forthcoming), and is the Founding Editor-in-Chief of the Encyclopedia of Earth.  He is the recipient of the Adelma ... (Full Bio)

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