Why Need is “A Word We Cannot Do Without” in Economics

Economists in the neoclassical tradition do their best to avoid using the word “need.” Social economists have traditionally been more open to discussions of need. Philosophic discussions of need are also scarce but nevertheless helpful. This essay will argue that need is “a word we cannot do without” in economics, and not only in social economics. Need is objective, satiable, and absolute, by contrast with want or preference as it is defined in neoclassical economics. With this clarification, 1) it is reasonable that public policy should consider need as well as want and aim to satisfy some needs, and 2) for some purposes, such as the economics of health care, conventional demand cannot be understood without the concept of need. Thus, even the narrower purposes of neoclassical economics cannot be achieved without clarifying and using the concept of need, in addition to the more usual motivational assumptions of neoclassical economics.