Mycology one of the most important biological control agents as an alternative to chemical based products for effective crop diseases management. Field meetings to find interesting species of fungi are known as 'forays', after the first such meeting organized by the Woolhope Naturalists' Field Club in 1868 and entitled "A foray among the funguses"["sic"]. Some fungi can cause disease in humans and other animals - The study of pathogenic fungi that infect animals is referred to as medical mycology. It is presumed that humans started collecting mushrooms as food in prehistoric times. Mushrooms were first written about in the works of
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