Culture refers to patterns of behaviour, attitudes and beliefs that are common to a group of people who commonly share these attributes and who use them for their identity.

The humanities and social sciences analyse change, both micro and macro. Thus, there is much talk about development in both explanation and prediction.

Price discrimination is a practice used by firms with monopoly power, monopolies or oligopolies. This is because consumers in monopolistic markets have no choice but to buy from the monopolist.