John Kent (numismatist) in AD 491. He also completed two volumes on the Continental Celtic Coins in the British Museum and other collections left incomplete by the death of previous keeper Derek Allen, which were published in 1987 and 1990. In 1974 he was promoted Deputy Keeper, and in 1983 Keeper, of the British Museum's coin and medal collection, a post he held until his retirement in 1990. A commemorative medal was struck to mark his retirement. He died in 2000. He had married Patricia Bunford in 1961 and had a son and a daughter. John Kent (numismatist) John Philip Cozens Kent (28
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