by The weird absence of money and finance in economic theory Consider the problem of money. Money is of central importance to any modern capitalist market economy. Yet it is mainly sociologists, philosophers and dissenters that have maintained an interest in what money “is” with a view to continued critique and development … One might think this is because economics has already provided an agreed clear concept of money. But this is not the case. Contemporary economics defines money in terms of function (unit of account, store of value, medium of exchange), but puts aside both the actual history of money (after an origin story) and the conceptual problem of money, both of which likely affect the functionality of money in the broader sense of its role and
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The weird absence of money and finance in economic theory
Consider the problem of money. Money is of central importance to any modern capitalist market economy. Yet it is mainly sociologists, philosophers and dissenters that have maintained an interest in what money “is” with a view to continued critique and development … One might think this is because economics has already provided an agreed clear concept of money. But this is not the case. Contemporary economics defines money in terms of function (unit of account, store of value, medium of exchange), but puts aside both the actual history of money (after an origin story) and the conceptual problem of money, both of which likely affect the functionality of money in the broader sense of its role and consequence in real systems …
What appears weird to those outside of the mainstream is that in economic theory in general money is typically absent. It is usually assumed that in a properly functioning market system prices express the value of output such that all prices effectively become representative of ratios between goods and services (and inputs), and this ultimately means a market system operates as though it were barter. Money simply becomes the convenient symbol (in its medium of exchange guise) that expresses these ratios. As such, it has no independent significance, and one ought to look through money to the operation of “real” economic factors, and can in effect ignore money as a contributory, contextualising or significant component in a system …
The role of money in real systems has generally been peripheralised because of an arbitrary limitation created by the assumption that money is separate from and then circumspectly significant to “real” factors. This statement may seem odd to a non-economist, since we live in a world where monetary policy is high profile, and a great deal of attention is paid to central bank policy (inflation targeting for price stability), and to the existence and activity of banks.
Yes indeed — money doesn’t matter in mainstream macroeconomic models. That’s true. According to the ‘classical dichotomy,’ real variables — output and employment — are independent of monetary variables, and so enables mainstream economics to depict the economy as basically a barter system.
But in the real world in which we happen to live, money certainly does matter. Money is not neutral and money matters in both the short run and the long run:
The theory which I desiderate would deal … with an economy in which money plays a part of its own and affects motives and decisions, and is, in short, one of the operative factors in the situation, so that the course of events cannot be predicted in either the long period or in the short, without a knowledge of the behaviour of money between the first state and the last. And it is this which we ought to mean when we speak of a monetary economy.
J. M. Keynes A monetary theory of production (1933)
What is also ‘forgotten’ in mainstream economic theory, is the insight that finance — in all its different shapes — has its own dimension, and if taken seriously, its effect on an analysis must modify the whole theoretical system and not just be added as an unsystematic appendage. Finance is fundamental to our understanding of modern economies and acting like the baker’s apprentice who, having forgotten to add yeast to the dough, throws it into the oven afterwards, simply isn’t enough.
All real economic activities nowadays depend on a functioning financial machinery. But institutional arrangements, states of confidence, fundamental uncertainties, asymmetric expectations, the banking system, financial intermediation, loan granting processes, default risks, liquidity constraints, aggregate debt, cash flow fluctuations, etc., etc. — things that play decisive roles in channelling money/savings/credit — are more or less left in the dark in modern mainstream formalizations.