A popular textbook of introductory economics illustrates abstract equivalence and formal substitutionability. First, ‘opportunity costs’ are explained: they are the costs incurred by someone for forsaking one choice in favour of another. Then a question is posed based on the following example: ‘Mrs Harris spends an hour preparing a meal.’ However, she is also a ‘psychologist in private practice, and can obtain $50 per hour for her services.’ Thus, we must ask: what are the opportunity costs involved in her preparing the family meal? This seems a harmless enough question. The situation is a nice way of explaining that for every action chosen, another opportunity is sacrificed. The facts seem incontestable. No matter what our values might be concerning family, work, religion, politics, etc., when Mrs. Harris makes dinner she forgoes the opportunity of generating $50.
But this description is misleading. While it appears to give us merely the facts, it gives us much more. It invites us to construe our lives, primarily our lives as family members, in terms of the activities of producers and consumers. The family meal loses all incommensurable status with other consumable objects. All such objects are placed before the individual and he or she is asked ‘Which objects will you forego for the sake of the others? How long will you continue to exchange until you have sufficient xs and adequate ys? How many xs will you forego for the sake of how many ys?’ The question assumes a form of rationality, known as ‘marginalism,’ that inevitably reduces all forms of life to ‘utility’ and ‘interest’.
To pose the question this way assumes already the legitimacy of viewing all human action in terms of ‘opportunity costs’. In fact, this putatively harmless example contains a complex metaphysics that assumes all human action and language takes place in a tragic world of scarcity. The ability to ask this question entails acquiescence to that metaphysics. Any action that I take will be inscribed in a world of lack wherein my choice is made possible only by the other options I choose against. Rather than viewing human action as arising out of a plenitude, this metaphysics assumes it is ensconced in scarcity. Death, violence, and antagonism become the source and end of such a metaphysics.
What could not be substituted into the calculation of opportunity costs? Let us suppose that Mrs Harris engages in sexual intercourse with her husband. And let us suppose that he could hire a prostitute at fifty percent of the opportunity costs incurred for the time they spend together. Although our values might be shocked by such a calculation, the economic facts are clear. It costs this couple $25 per hour for sexual intercourse. If he utilized the services of a prostitute and she worked the hour, the economic index of productivity would increase by $75.
These so-called facts are no more settled than the values one putatively chooses. For the principle of formal substitutability treats all human action as if it were a disconnected or isolated event. The fact of the matter is not that Mrs. Harris’ husband saved the family $25 and increased the productivity by $75. The fact is that he committed adultery and thus denied God’s purposes for marriage. This fact has much more concrete or empirical reality than the putative economic facts mentioned. We can point to the concrete historical embodiment of something called ‘adultery’ much more readily than something called ‘opportunity cost’. Yet in a social reality determined primarily by marginalist rationality, the latter is called a ‘fact’ and the former a ‘value’.
– Stephen D. Long, Divine Economy: Theology and the Market, p. 4-5.
Your Correspondent, Everyone but economists call things that grow without ceasing “cancer”
Hark! Could we need an economist?
“The fact is that he committed adultery and thus denied God’s purposes for marriage.”
That is not a fact. God’s purpose for marriage is in no way, shape or form factual.
Almost needless to say, I think the prostitute analogy is a little juvenile.
Lemme quote econjeff (http://econjeff.blogspot.com/2012/03/how-much-economics-to-learn-in-college.html):
“I remember my own phase in college of being what I call an “Economics 101 libertarian”. I am sure my college friends remember it too – probably less fondly than I do! It is dangerous, though amusing too, if you know what is going on. Basic micro has to be tempered both with all the caveats and exceptions that come from digging deeper within economics and with the insights provided by adjacent disciplines like sociology and psychology. ”
Just as you get students coming out of Econ 101 as libertarians and not really getting the big picture, you get students coming out of Econ 101 thinking economists assume that the dollar is king.
Economists know well the difference between spending money on guns and spending money on butter. We also know the difference between sleeping with a spouse and hiring a prostitute. Utility is not measured in dollars. You don’t need to be able to assign a dollar value to the pain caused by adultery to consider it immoral or rule it out.
[Further, technical note: no (sensible) economist would use a marginal utility framework to analyze something like adultery. By almost any standard that’s a discrete jump, not a continuous change.]
One of the signs of an unhealthy priesthood is that your guild is unwilling to take responsibility for the way in which your ideas seep outside technical boundaries and into the world around.
🙂
But thanks for your comment Fr. Enda, licentiate in the Unified Church of the Invisible Hand and her Prophet Adam Smith.
“One of the signs of an unhealthy priesthood is that your guild is unwilling to take responsibility for the way in which your ideas seep outside technical boundaries and into the world around.”
Agreed, it’s unfortunate, and more should be done to combat (in particular) the sort of commodification slants people take from tidbits of economics.
Mind you, given that you the level of knowledge of economics is much higher than can possibly be taught in a single class/semester, some subtleties will always be lost.
You might even say that time is scarce, and that we should figure out some field of study to analyze ways to use that time as best we can 😉