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Mea culpa - fat tax version

About two years ago, I co-authored a paper that was published in the journal Health Economics  with the title "When Do Fat Taxes Increase Consumer Welfare."  

I started work on that paper because I was troubled by the contradictory way in which economists had approached the analysis of fat taxes.  One the one hand, economists estimated the effects of fat taxes by using elasticities of demand that were derived from a rational consumer-utility maximizing model.  In this kind of conceptual model, a tax (or a price increase) cannot make a consumer better off.  However, on the other hand, economists were publishing these papers with the premise that somehow the tax could make people better off.   In the paper, we tried to think about an approach for reconciling these two stances by asking whether a tax could make people better off if we make the reasonable assumption that people also care about (and consider) weight or health effects when choosing the quantity and type of food to buy.   

We had argued that in this situation, it was possible but empirically unlikely a tax could make people better off.  Enter Professor Neill, who wrote a comment on our work, saying "no" - it is concetually impossible for a fat tax to increase consumers' well-being in a "standard" economic model of the consumer.  Here are the first sentences of our forthcoming response to Dr. Neill:

We are flabbergasted at how such a fundamental lesson of mathematical economics escaped our attention, but Professor Neill is right and we were wrong. We apologize. 

Neill pointed out, embarrassingly to us, what should be obvious to any serious student of economics.  A tax is akin to reducing someone's income.  No one is better off with less income.  Even if one wants to weight less, they don't need a tax to do it.  A consumer can achieve a lower weight at current prices and re-allocate their income toward other non-weight-increasing goods and achieve a higher level of satisfaction.  

So, how do economist justify fat taxes?  One approach is to claim that obesity is an externality - that my food choices impose a cost on you (via Medicare/Medicaid) and thus a tax can force me to properly consider those costs.  However, in a paper a couple years ago, Bhattacharya and Sood dismantled the validity of that argument (although it is not well understood and continues to be debated).  

Another response is that the "rational consumer utility maximization" model is incorrect.  This "behavioral economics" approach posits that people fail to properly account for their future well-being and that a tax can force people to make decisions today that their future selves will ultimately find beneficial.  The precise mechanism for this welfare improvement is rarely laid out with any precision.      

In our reply to Neill, we tried to sketch out a behavioral-economics type model to see when a fat tax might be justified on those grounds.  Here is our conclusion:

under this sort of behavioral economics framework, where people naively or myopically optimize utility without considering future weight effects, it is possible to imagine situations where raising prices might increase ultimate experienced welfare. However, this condition occurs only when price is very high and falls in the range where consumption would take place only because people are ignoring the ultimate health impacts; at lower prices, a ‘fat tax’ would only lower welfare.


 

 

Role of technology in the global economic importance and viability of animal protein production

That mouthful is the name of an article I wrote for the journal Animal Frontiers.     

Here are a few excerpts: 

Walk in almost any Department of Animal Science in the U.S. and one is likely to find a few black and white photos of stern, cowboy-hat wearing animal husbandry students from the early part of the last century. The remarkable thing about those photos is not the now unfashionable clothes but rather the champion cattle the students were proudly displaying for posterity. Today, one can scarcely find a bovine as fat and squatty as those that were once so esteemed. Pondering the difference between the prized cattle in those black and white photos and almost any old steer in a modern feedlot provides a stark illustration of the role of technology in shaping animal production over the past century

and

The direst of the Malthusian predictions have failed to materialize. Although the population of the world has grown dramatically over the past three centuries (and is expected to grow further still), the rate of growth has slowed, and in some developed countries has even begun to fall. While people of Malthus’s day probably could not have envisioned modern birth control methods, the most pessimistic interpreters of Malthus’s model almost certainly underestimated the impacts of productivity-increasing technological change.

I used a number of approaches to calculate the economic value of the productivity gains that have occurred in meat production in the past 40 years.  Here are the results of one approach applied to beef cattle:

if we applied the same genetics and technology used in 1970 to a cow herd the size of the one at present, we would expect to experience only $24.8 billion in farm value produced. The remaining $37.16 - $24.80 = $12.36 billion in value actually observed (or about 33% of current total value) is a result of factors (e.g., genetics, technology) that gave rise to improved productivity

 

 

I was wrong about sustainability. Well, sort of.

I’ve changed my mind about sustainability.  Well, sort of.    

Perhaps I’ve just been a bit curmudgeonly, but I’ve bristled at the often-used word “sustainability” in the context of food and agriculture. Sustainability seems to be one of those feel-good, vacuous buzz words that is thrown around to support whatever cause the wielder of the word wants to support.  In fact, in The Food Police, I wrote:

the sustainability movement largely represents an elitist attempt to ration scarce resources using social pressure, guilt, and regulation

On the one hand, it is hard to argue with the concept of sustainability.  Wikipedia simply says it is the “the capacity to endure” and to remain “productive over time.”

That doesn’t sound so problematic.  Who doesn’t want to endure and remain productive?

I’ve come to realize my problem is not with the concept of sustainability per se but rather with the way many people propose to achieve the outcome.

In food and agriculture, “sustainability” has come to be interpreted as synonymous with organic, “natural”, and local.  In this sort of vision, the way we endure and sustain our production over time is that we have a smaller population, we need to spend more time working the land, we need to spend more money on food, and we need to learn to like to eat different kinds of foods.  Maybe that kind of future sounds good to some folks, but for my taste, if that is the kind of future that will be sustained, count me out.  I suppose our cave-man forefathers could have carried on quite “sustainably” for a very long time, but their “sustainable” life is not one I’d prefer being born into.  This “natural” future is not the kind of future in which I want to live, and I think that is why I’ve been bothered by the word “sustainability.” 

The thing that is missing in the local, slow, organic vision of sustainability is any serious consideration of the role of scientific and technological advancement.  Sustainable doesn’t have to mean stagnant.  Rather, I posit that any future worth fighting for is one that is dynamic, innovative, and exciting; one in which there will be many fellow humans, with bountiful opportunities to eat and work as their hearts desire.  In all likelihood, there will be another billion people show up on this earth in the next 40 to 50 years, and if we are to “endure” and remain productive and prosperous, it will require advancements in food and agricultural technologies.      

We don’t have to take a step back to sustain our current living and eating standards.  We can continue to enjoy the wonderful abundance of food and even improve our living standards.  But technological optimism won’t cut it.  We actually have to invest in research and development.  We actually have to be willing to adopt new food and agricultural technologies.

I am a proponent of technological advancement in food and agriculture because it is the root underlying cause of our gains in prosperity.  That’s why I now am in favor of sustainability.  Because, as I see it, in an ideal future, they’re one in the same.             

  

Animal Shelters for Chickens

That is the title of a post by Yvonne Vizzier Thaxton at Meatingplace.com.  She writes:

It was inevitable.  Community shelters are reporting the appearance of chickens looking for a new home. 

and

The problem is that many of the people who thought having a few chickens to supply eggs and teach their children about food had good intentions but not enough information.  First, several chickens can completely strip a small yard of vegetation leaving the area muddy and unattractive – gone is the image of chickens in the grass.  They don’t always lay an egg a day and don’t lay many, if any, after about 2 years but they still eat.

and

Our local shelters have been struggling for years to take care of the many cats and dogs they receive along with the occasional horse, exotic bird and reptile.  Finding homes for these, more common pets, is not easy.  Finding a home for chickens is likely to be significantly more difficult.

Think the HSUS will help out?