Palmetum of Santa Cruz de Tenerife native to world islands. Trees and shrubs of other plant families are also displayed, organised in "biogeographical sections". All gardens are maintained with no pesticides and no fertilizers, different species of wild birds are easily seen in the palmetum. The Palmetum is located in Santa Cruz de Tenerife, capital city of the Western Canary Islands, in the district of "Cabo Llanos", by the Parque Marítimo César Manrique. It is an artificiall hill originally made of rubbish: a former landfill of the city, by the ocean. The average annual temperature is 21,7 °C and the absolute minimum temperature recorded is 13
The purpose of a system is what it does 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 a better starting point in seeking understanding than the familiar attributions of good intention, prejudices about expectations, moral judgment,