Economy of Afghanistan that Afghanistan was nearing self-sufficiency in grain production. The availability of land suitable for grazing has traditionally made animal husbandry an important part of the economy. There are two main types of animal husbandry: sedentary, practiced by farmers who raise both animals and crops; and nomadic, practiced by animal herders known as Kuchis. Natural pastures cover some but are being overgrazed. The northern regions around Mazar-i-Sharif and Maymanah were the home range for about six million karakul sheep in the late 1990s. Most flocks move to the highlands in the summer to pastures in the north. Oxen are the primary
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