The Social Structure is subject to incessant change, growing decaying, finding renewal, accommodating itself to extremely variant conditions and suffering vast modifications in the course of time.
(MacIver and Page, 1955: 508)
Social life is characterized by the inevitability and ubiquity of change. A living society is a changing society.
The demography of society is constantly changing with the birth, growth and death of its members. It also changes due to migration—members leaving the society (emigration) or outsiders arriving and settling down (immigration) temporarily or permanently; migration changes the ratio of insiders and outsiders. The outsiders contribute to a society's ...