A Critique of “Utility”
Economists and other social theorists often take the concept of utility for granted. In theory, utility is a measure of value. I will denote the utility of X to Y as U(X, Y) or simply U(X) if Y is clear in the context. For a single individual, we can think of utility as a mathematical function that maps objects or outcomes to points on the continuum. This mapping is called a “utility function”. (In this context, “function” has its mathematical meaning, not its ordinary meaning.) To think about society, we might want to define utility for a group, not just a single individual. Collective utility is typically defined as the sum of individual utility over the collective. This assumes that utility is defined on the same scale for everyone. The concept of utility is used to model individual and social decision-making. It is used in game theory to define benefits and costs. It is often used in moral philosophy to define the “goodness” of actions and outcomes. In a utilitarian m...