The Energy Construct cost-effectively. The author concludes that wind energy has the greatest potential for near-term expansion. However, smaller-scale use of solar, geothermal, biomass, and ocean sources along with current hydroelectric sources could add up to make a significant contribution. The advantages and disadvantages of each renewable energy option are examined. Nuclear energy is also supported by the author as the only way to produce large amounts of emission-free power. The author pays close attention to the safety of nuclear energy and provides a unique comparison of the safety of energy generation from a number of sources. Fossil energy is then examined with
The purpose of a system is what it does be balanced by a more straightforwardly descriptive view. The term is used in many fields including biology and management. The purpose of a system is what it does The purpose of a system is what it does (POSIWID) is a systems thinking heuristic coined by Stafford Beer. Stafford Beer coined the term POSIWID and used it many times in public addresses. In his address to the University of Valladolid, Spain, in October 2001, he said "According to the cybernetician, the purpose of a system is what it does. This is a basic dictum. It stands for bald fact, which makes