I realized this morning that with all this writing about food and wine, I haven’t taken a good pot-shot at Economics in a while. I feel I am long overdue. I don’t even know what set me off this time.
I have talked about them before but for those of you who need a refresher, externalities are those costs and benefits that the market does not naturally account for without intervention: things that (arguably) need to be addressed via intervention. The classic example is a factory making paper and dumping pollutants into the river. It doesn’t add to the factories bottom line at all to clean up the mess they are making or to stop polluting. However, the junk in the river is a health hazard and is causing people to get sick which requires them to go to the doctor. Those trips to the doctor cost money which is paid for by insurance which in-turn causes insurance rates to go up. The cost of the pollutants is ultimately absorbed by society in the form of higher insurance rates. In all likelihood, it would be much less expensive, society-wide, to just get the factory to stop polluting, but it would be more expensive for the company.
An economist would say that we have to internalize the negative externality by assigning properties rights. This means we would arbitrarily define the right not to drink polluted water as belonging to the individuals down-stream and if the factory wants to poison them, they have to pay per ton of pollutant they dump in the water. The water-drinkers would get to set the price. At some point it is cheaper for the factory to clean up its act and so they would do so or go out of business. Whatever their decision, the cost of polluting the stream is now internalized.
This would, of course require a fairly substantial amount of governance and enforcement. The factory could clandestinely slip the pollutants in. Presumably, this would be accounted for in the cost the water drinkers charge (they are rational actors, after all). Wait… what happened to our free-market. We already have an enforcement agency.
The point is that one relatively simple case already starts to strip a way the illusion of a free-market.The larger point is that this is just one case in millions. Economist like to think of this case as exceptional, but this is ridiculous. Everything, and I mean EVERYTHING, in our economy has negative and positive externalities. For example, let’s take the most neutral imaginable product, wheat, that is often used in Econ textbooks as a classic controversy-free product.
Well, not so much. Let’s say one farmer uses traditional diesel in his tractor and another uses lower-pollutant, but higher cost bio-diesel. The second environmentally-friendly farmer is going to have to charge a little bit more for his product. The cost of using the higher-pollutant fuel is not accounted for in the market calculus without a government subsidy for the eco-friendly farmer or a penalty against the other.
Even that is a relatively simple example. Everything we consume has social value, negative or positive and often both. There is no such thing as a social value-free commodity.
Some economists would agree with this position, but would generally qualify that agreement with, "yeah, but Economics is a model, just like physics and you don’t need to, and can’t, account for everything all the time." True, but beside the point. Economics is indeed a model, like Newtonian physics and it probably has value, but each model has its place and creating policy without taking into account the vast complexities of externalities is sort of like building a plane without accounting for the wind-resistance of the material: you might get lucky if you happen to use a material that has little friction, but generally the plane is just going to crash.
So what is the solution? We really need people trying to find a new Economics that can account for the complexities of our world. I do not believe in the command economy. Market incentives have their value and I don’t think individuals can necessarily decrypt the complexity of human behavior any better than the market. From a policy point of view, I hate to say it, but our best bet is to just muddle through. Apply models when they are helpful but throw them away when they are not.
More than anything else, however, economists need the humility to realize that they are social scientists, not scientists and they should take their orthodoxy with a grain of salt. If you think most economists have that humility, read the first ten pages of any undergraduate Economics textbook. They really think they are scientists and they like to say so often.
So that’s my complaint of the day against Economists. Expect the wine and food commentary to resume without interruption until I get another bee in my bonnet.
END RANT.