Adapting to the Changes in Time
Societies change because the people in it also change. Some values and norms are also different from one society to another society. Anthropologists are scientists who study societies and try to derive lessons from certain cultural practices unique to a particular society and try to apply them to other societies.
They have conducted various studies in this regard and came to the conclusion that culture (especially cultural and inter-cultural communication) affects societies and also the other way around. It is a never-ending loop. Modern societies are of course vastly different from some still existing primitive societies but one thing that is certain is the basic humanity of each person whether modern or primitive.