Social change is more likely to occur in societies where there is mixture of different kinds of people than in scieties where people are similar in many ways.
Within a society, social change si more likely to occur more frequently and more readily in the materieal aspects of the culture than in the non-material, for example, in technology rather in values.
Furthermore, social change is easier if it is gradual. For example, it comes more readily in human relations on a continuous scale rather than one with sharp dichotomines.
