In contrast, once specialization of tasks develops, people's experiences of the society they live in and its relation to the outside world will differ, and instead of a solidarity based on sameness, there must be a solidarity based on interdependence with fellow-members whose lives, and therefore attitudes and beliefs, may he very dissimilar to one's own. In such a society, shared beliefs, shared commitment to rules and traditions, cannot be assumed, but mechanisms must be found whereby the relationships necessary for the maintenance of the society and the satisfaction of the needs of its members can be sustained. Durkheim calls this kind of solidarity, a soli-darity based on interdependence rather than sameness, organic solidarity.