The word "tribe" was used at an early point to denote a relatively well-bounded group with its own language, culture, history, territory etc. As opposed to peasant societies, tribes have little or no regular contact with the larger society. Tribes are self-sufficient in most meanings of the word. Within neo-evolutionist thinking, "tribe" is used to denote groups who do not subsist on hunting and gathering, but most commonly on agriculture, intensive animal husbandry. The concept has been the subject of much discussion, and some have argued that it should be deleted from the anthropological vocabulary, because of its tendency to reification (see Southall 1970).