Trichology Trichology Trichology is the branch of dermatology that deals with the scientific study of the health of hair and scalp. Trichologists are hair and scalp specialists (one type of skin specialist) who diagnose the causes of hair fall, hair breakage, hair thinning, miniaturization of hairs, diseases of the scalp, and treat according to cause. An interest in hair loss and hair care originated around 1860 in a London barbershop under a certain Professor Wheeler. Later in 1902, this interest in hair disorders became known as Trichology and the Institute of Trichologists was founded. The Institute of Trichologists at over 100
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