Mainstream Economics: Money as Medium of Exchange, Unit of Account, and Store of Value
Although often unintentional, one of the most fundamental errors that pervades mainstream economics instruction is to present economic categories independent of human action. This error is fundamental because, once committed, it pervades all aspects of the study of economics, making them unrealistic. For failure to treat economics appropriately as a social science, including human actions, interactions, subjective valuations, and choices, all kinds of economic categories lose their significance and become disconnected from the real world.