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Economics, Psychology, and Policy Links 30/09/17

Our new research group launched on September 8th at an event with Professor Peter John. Our new Msc in Behavioural Economics has also started in UCD. We host a weekly meeting to bring our students and researchers together with other researchers, policymakers, and industry from outside the university and we welcome expressions of interest to attend.

1. The US Internal Revenue Service have produced a guide to using behavioural insights

2. My reading list for students in UCD this term is available here

3. Childhood self-control predicts adult pension participation. Our new paper that came out recently in Economics Letters.

4. Andrew Gelman on whether we should abandon statistical significance

5. The festival of economics and comedy that grew out of Ireland's financial crisis, Kilkenomics, takes place again this year from November 9th to November 12th. I am giving a talk on Father Ted and Economics. This is a one-off and probably not a good idea on my behalf but the overall festival is a really nice event and Kilkenny one of the best places in Ireland to visit.

6. My colleague Orla Doyle and colleagues have released a working paper on terrorism and well-being.

7. Irish Department of Finance & Govt Evaluation Service paper on implications of behavioural economics for tax policy

8. Second issue of the Journal of Behavioural Economics for Policy now available online.

9.  Richard Layard on economics & mental health

10. Details of events and mailing list for the Irish Behavioural Science and Policy Network.

Tax Reform

I read with interest the Unified Framework for Fixing our Broken Tax code. The bottom line is a cut in the corporate tax rate to about 20%, roughly the world average. It also proposes an end to the estate and gift tax.These are small steps in the right direction. It's not a once-in-a-generation clean-out-all-the-junk tax reform.

As an economist I am most saddened by what is missing. Tax reform, designed to support long term growth, should have two main characteristics:

1) Lower marginal rates, by broadening the base. This reduces the disincentives to work, save, invest, start businesses, while raising the same revenue.

2) Simplicity, stability, transparency, and consequent evident fairness. (By fairness I mean each of us knows the others are paying taxes too, and do not suspect that lobbying, political connections, and clever tax lawyers are getting others off the hook.)

These two are essentially missing from the document. The left has seen the tax code pretty much entirely as a vehicle for subsidy and redistribution for a long time. This Republican document, sadly seems to have bought that view.  The goal is to
"put more money into the pockets of everyday hardworking people."
Well, without changing government spending, that means less money in someone else's pocket.



I searched for the word "incentive." Here are its occurrences:
"Ending incentives to ship jobs, capital, and tax revenue overseas. ..puts an end to the incentives for shipping jobs overseas...It ends the perverse incentive to keep foreign profits off shore" 
"retains tax incentives for home mortgage interest and charitable contributions"
"the framework explicitly preserves ... tax incentives [for]: research and development (R&D) and low-income housing." 
Fixing profit repatriation and the incentive to move your business overseas is a good idea, though don't count on it to unleash a wave of investment in the US. I have no idea how it affects "jobs." The second two are the opposite of tax reform. "Marginal" appears once,
Domestic manufacturers will see the lowest marginal rates in almost 80 years. 
To be fair, it does say
"Broadening the tax base and providing greater fairness for all Americans by closing special interest tax breaks and loopholes. "
But it does not say which tax breaks and loopholes, other than to say that mortgage interest, charitable deductions,  and low income housing are off the table. (With the failure to so much as move Medicaid to a block grant, I don't have much hope for the other big one, the tax deductibility of employer-provided group health insurance.) With the chance of any substantial deduction-financed rate lowering off the table, that's an invitation for everyone to get in touch with their lawyer and lobbyist.

To be fair, it does say
   simplicity of “postcard” tax  ling for the vast majority of Americans.
But this simplicity comes largely by exempting a swath of voters from any obligation to pay Federal taxes:
the framework simplifies the tax code and provides tax relief by roughly doubling the standard deduction to: $24,000 for married taxpayers filing jointly, and $12,000 for single filers.
The tax code itself gets no real simplification, transparency, or stability. 

Ronald Reagan himself understood that corporations pay no taxes. All taxes apparently paid by corporations come from higher prices, lower wages, or lower payments to shareholders. The right corporate tax is zero. Tax people. This document offers  
Tax relief for businesses, especially small businesses.
In sum, it pretty much abandons the idea of tax reform, designed to improve "supply side" growth, appropriate for an economy at full employment, in favor of tax cuts, at best a short-run Keynesian stimulator in appropriate for the moment; and it accepts the notion that the basic function of the tax code is to transfer money to or from various groups.

Its reception is therefore predictable. 

Binyamin Appelbaum, writing "News Analysis" in the New York Times, not the opinion pages, is titled well, "Trump Tax Plan Benefits Wealthy, Including Trump." It starts
The tax plan that the Trump administration outlined on Wednesday is a potentially huge windfall for the wealthiest Americans. It would not directly benefit the bottom third of the population. As for the middle class, the benefits appear to be modest. 
Well, sell a tax plan by its income transfer features, with Democrats who think entirely that way, and no surprise, "tax cut for the wealthy" is all you will hear.
The administration and its congressional allies are proposing to sharply reduce taxation of business income, primarily benefiting the small share of the population that owns the vast majority of corporate equity.
Even the corporate tax is evaluated not by its incentives, but by presumptions about its distributional effect. It's wrong -- only a small share of the population holds stocks directly, but every American who has a pension fund, including government employees, is invested in the market.
President Trump said on Wednesday that the cuts would increase investment and spur growth, creating broader prosperity. But experts say the upside is limited, not least because the economy is already expanding.
Well,  sell a tax reform as a "tax cut," whose economic effects come from who gets "money in their pocket" rather than by incentives, and no surprise people evaluate it as a Keynesian tax cut.

I don't dream that the Times and Democratic Party would say anything about a Republican tax plan other than "tax cut for the rich" or think of economic effects in incentive and growth terms rather than Keynesian terms. But one could at least give them an argument to disagree with!

The times Editorial revealed full-on Trump derangement conspiracy theorizing is alive and well. They are happy to speculate in print that the Treasury Secretary, the leaders of the House and Senate, and a little battallion of policy wonks are hard at work on a tax reform proposal all for the purpose of... lowering President Trump's personal taxes.

I found the WSJ editorial a more useful, and balanced summery of the small but definite promise, and the many dangers.

So yes, if this went through, it could be a good step in the right direction. It could show Congress can do something, and could pave the way for a real tax reform. Just as changing Medicare to block grants would have been a good small step in the right direction. I'm consequently not holding my breath.

But I am still (always) optimistic. If this fails, there will be no choice but to embark on a real reform.
Make no small plans for they have no power to stir the soul.  
You can always count on the Americans to do the right thing after they have tried everything else.

Health Care Policy Isn't so Hard

Last July, as the last Republican Obamacare bill was imploding, Greg Mankiw wrote "Why Health Care Policy is So Hard" in the New York Times. For once, I think Greg got it wrong. Health care policy isn't hard at all, at least as a matter of economics. (Politics, and ideological politics, is another question, but not Greg's question nor mine.)

There are some important underlying themes uniting how Greg's piece goes wrong (in my opinion)
  • A little bit of economic education can be a dangerous thing
While most opinionated people and most "policymakers" are blissfully unaware of any economics, a little bit of economics education can sometimes mislead. Economics is full of pretty fairy tales, passed on through the decades or even centuries. The day after one sees the beautiful tale of the natural monopoly, or the externality, or the public good, then like a two-year-old with a hammer to whom everything looks like a nail, one starts to see natural monopolies, externalities and public goods all over the place. Wait a moment. Just because it's in the textbook -- even Greg's textbook -- doesn't mean every single industry and case fits.

The other rhetorical error is of the type, "well, we can't have homeless people who get heart attacks dying in the streets." No, of course not, but, is every single line of the ACA and tens of thousands of subsidiary regulations absolutely necessary to provide for homeless people who suffer heart attacks? Why must your and my health insurance be so totally screwed up -- and so totally micromanaged by the Federal government -- just to solve the problem of homeless people heart attacks? I'm struggling to find just the right category for this sort of argument
  • Gross disregard of the size of effects. 
  • Straw man -- a theoretical problem with a completely free market justifies any regulation. 
  • Disregard of the choice at hand -- it's not benevolent perfection vs. free market. 
  • Using problems as talking points. If the same "problems" exist elsewhere and you don't want to or need to fix them, then you're not serious about that "problem" for health. 
Maybe we can come up with a better one sentence characterization later. (There must be a Greek word for these rhetorical tricks!)

Let's review Greg's "why health care policy is so hard" problems.
"...free market sometimes fails us when it comes to health care. There are several reasons.
Externalities abound.  Take vaccines, for instance. If a person vaccinates herself against a disease, she is less likely to catch it, become a carrier and infect others. Because people may ignore the positive spillovers when weighing the costs and benefits, too few people will get vaccinated, unless the government somehow promotes vaccination. 
Another positive spillover concerns medical research. When a physician figures out a new treatment, that information enters society’s pool of medical knowledge. Without government intervention, such as research subsidies or an effective patent system, too few resources will be devoted to research." 
Well, ok. We require vaccinations to enroll children in schools. And basic research might be under funded. But basic chemistry research might be underfunded too. Does the Federal government need to buy half of all chemicals in the country and intensely regulate the other half just to keep basic chemistry research going? There are externalities everywhere. A neighbor mowing his lawn on a Saturday morning might wake you up. Does this justify the entirety of America's exclusionary zoning codes, or make "housing policy hard?" We do have research subsidies and a patent system, by the way. People like Greg and I are paid pretty handsomely to do research!

These "problems" exist in many markets -- and the ACA, or even pre-ACA regulation, is hardly a minimalist solution to the problem of vaccination and basic research!

The logical connection from "free markets sometimes fail us" to "and therefore the Federal Government needs to take a heavy hand as it does for health care" deserves its own place in the pantheon of fallacies. We have a choice between imperfect alternatives.
"Consumers often don’t know what they need. In most markets, consumers can judge whether they are happy with the products they buy. But when people get sick, they often do not know what they need and sometimes are not in a position to make good decisions. They rely on a physician’s advice, which even with hindsight is hard to evaluate."
"The inability of health care consumers to monitor product quality leads to regulation, such as the licensing of physicians, dentists and nurses. For much the same reason, the Food and Drug Administration oversees the safety and effectiveness of pharmaceuticals."
I am surprised that Greg, usually a good free marketer, would stoop to the noblesse oblige, the cute little peasants are too dumb to know what's good for them argument. This argument applies equally to car repair, tax advice, contracting, home repair, computer setup and repair, economics teaching... and just about everything else in our economy. We purchase complex personal services from people who know more than we do. It seems to work out ok.

Rhetorically, it's a good example of an argument that isn't serious because it isn't uniform. Why haul this out just for health care?

Again, is the ACA a minimal solution? All policy is a choice among alternatives. Do you really think government run insurance systems are better for figuring out what you "need?" Does Greg think he and his family are too dumb to make medical choices, so wishes for a government bureaucracy to determine his and his family's care?

Is inability to monitor quality a central economic problem? How much of the ACA is devoted to that? How much of the ACA and surrounding regulation is instead devoted to stopping the free flow of information,  to stop competition over quality, to maintain the illusion that all doctors are equal?

Licensing.. In this age when the Obama administration started to sound like the Cato institute on the subject of occupational licensing, 70 years after Milton Friedman showed how the AMA uses licensing to restrict supply and keep their earnings up, and as London Transport brazenly bans Uber, Greg gives us this vision of the wise benevolent government licensing for our protection? Those unlicensed dog-walkers sure are a national disgrace. And let's not start on the FDA's wise overseeing of the safety and effectiveness of pharmaceuticals, like, say, the epi-pen.
"Health care spending can be unexpected and expensive. Spending on most things people buy — housing, food, transportation — is easy to predict and budget for. But health care expenses can come randomly and take a big toll on a person’s finances." 
"Health insurance solves this problem by pooling risks among the population. But it also means that consumers no longer pay for most of their health care out of pocket. The large role of third-party payers reduces financial uncertainty but creates another problem." 
Greg surely knows better than this. Spending on houses and cars is not easy to predict and budget for -- when the house burns down or the car crashes. That's why we have insurance, regulated and perhaps over-regulated, but nothing like health insurance.

"Consumers no longer pay for most of their health care out of pocket" is not a necessary consequence of insurance. Insurance, in a free market would not cover routine predictable expenses, just as car insurance does not cover oil changes. This is entirely an artifact of regulation.

Let me skip to the last, most common and most important argument, most illustrative of how a little economics education can be a dangerous thing.
"Insurance markets suffer from adverse selection....If customers differ in relevant ways (such as when they have a chronic disease) and those differences are known to them but not to insurers, the mix of people who buy insurance may be especially expensive. "
"Adverse selection can lead to a phenomenon called the death spiral. ...Suppose that insurance companies must charge everyone the same price.... the healthiest people may decide that insurance is not worth the cost and drop out of the insured pool. With sicker customers, the company has higher costs and must raise the price of insurance. ...As this process continues, more people drop their coverage, the insured pool is less healthy and the price keeps rising. In the end, the insurance market may disappear."
We have all been to that beautiful econ 1 class, where we hear Ken Arrow's asymmetric information insurance spiral, or George Akerlof's justly famous proof that the used car market does not exist.

But are these fables true of our world, or is this a case of two year old with hammer? In the fable, you know things about your health that a pure free-market health insurer, armed with your entire history, every scan and test they can dream up, cannot know. In reality, the information advantage is exactly the opposite! They know a whole lot more about you than you do. That's not the asymmetric information of this fable.

In fact, a few paragraphs ago, Greg make exactly that opposite argument! Health care must be run by the government because the poor peasants don't know how sick they are and what to do about it, but now health insurance must be run by the government because the crafty little buggers know exactly what they need and private health insurers can't tell them apart.

We do have asymmetric information and a death spiral -- because the government forbids insurers to use information they have! The government forces insurers to take everyone at the same price, so only the sick sign up.  Maybe that's good or bad, but it's not the  fundamental asymmetric information problem of the fable. And somehow life insurers, car insurers, home insurers, and carmax exist.

Greg is a careful writer. "the mix ... may be expensive... the insurance market may disappear." Yes, every fable is a possibility. But we have to think whether in fact this is a real problem, whether it is a central problem, whether we advocate the same policies uniformly when we see this problem or whether it's just a talking point for policies advocated for other reasons, and whether the ACA or other regulation is a minimally crafted solution to this problem.
"One thing, however, is certain: The existence of a federal law mandating that people buy something shows how unusual the market for health care is."
Really? Does the existence of every federal law show how unusual the underlying market is? Agricultural subsidies prove how unusual the food market is? Solar panel subsidies show how unusual the market for energy is? Tariffs and quotas show how unusual steel is?
"policy wonks of all stripes can agree that health policy is, and will always be, complicated."
As a matter of economics, this wonk disagrees. 95% (made up number) of health expenses are relatively predictable complex personal services, bought by savvy shoppers who buy houses cars and cell phones. I will agree that it always will be complicated only because our government will always be screwing it up. But not that it must be complicated.

OK, health care policy is hard. But it's hard because so few in our political and commentary class have any trust that markets actually can work, and that by and large thoughtfully getting the heck out of the way can lead to a better system for health, as it has for just about everything else where it has been tried. Allowed to do so, competitors will come in and provide better service at lower prices. People and the businesses that want to serve them will find a way to overcome econ 101 problems. CarMax does exist, despite the lemons theorem. Companies really care about their reputations.  What a lot of economics education can do -- including a bit of economic history -- is to patiently remind people of these fact, rather than to give them excuses for endless mindless dirigisme.

Greg is careful, and this is a good review of the potential theoretical problems of health care and insurance markets, as presented in a standard (his!) econ 101 textbook. Greg does not say that the ACA, or even 5% of the ACA, is a necessary solution to these problems. But Greg does not say the opposite either. That these are small, manageable problems, which a government bureaucracy will likely mismanage for health as it does everywhere else, is absent in Greg's column. The average New York Times reader will come out thinking Greg's on board with the basic architecture of the vast complex mess coming out of Washington. If Greg thinks, as he may well do, that a regulatory system about 5% of the size of the ACA could handle all of these economic problems with your and my health insurance, that the rest of the ACA is a vast mess mostly designed to cross-subsidize health care from one group to another,  maintain rents for incumbents, and hide the cost of it all, you wouldn't know it from this article. Greg is a great writer, and knows his audience and the context in which he is writing, so it is a puzzling sin of omission.

I suspect I know what happened. It sounded like a good column idea, "I'll just run down the econ 101 list of potential problems with health care and insurance and do my job as an economic educator." If so, Greg failed his job of public intellectual, to help us digest just which economic fables are actually relevant.

(The last section of After the ACA goes through all these arguments and more, and is better written. I hope blog regulars will forgive the self-promotion, but if Greg hasn't read it, perhaps some of you haven't read it either.)

Update: Greg Responds. Thoughtfully, politely, and unlike me, concisely, as one expects. Yes, there is a great question as to what the role of an economics educator should be! Do we run through the standard list of theoretical possibilities for market failure? Or do we go to the second step of questioning just how much they apply, how central they are, how much they actually drive the regulatory outcome, how effective regulations are at addressing them; making sure they aren not just turned into talking points for political outcomes and rent seeking? All in 900 words or less!

Update 2: Sometimes I'm really slow. It occurs to me only this morning that both Greg and I missed the elephant in the room. The number one lesson that econ 1 has for health policy is: The demand for health care, and health care quality, is highly elastic. And Lesson 2, the income elasticity is pretty high too.

The standard vision in the policy world, the public, and too many health “economists” is that we “need” health care and it is a homogenous good. Translated to economics, they suppose a vertical demand curve.  The hard fact is exactly the opposite. Perhaps less obviously, quality is highly price elastic too. Your back hurts. Do you “need” surgery? (and if so what kind, performed where?) steroid injections? Ibuprofen? Physical therapy (an incredibly varied and price elastic service)? Many people looking at the cost go to chiropractors.

For the world of policy, this fact is what upends all health care schemes. If the cost is low, people will expand their demand for health care services enormously. If the demand curve were vertical, the supply curve could be flat. Sadly, if the demand curve is very flat, the supply curve must rise, and if not through price, through rationing. Someone else will decide what you "need."

Income elasticity is huge. What else is there to spend your money on, if you can? Plus, like business class, people are willing to pay a lot as income rises for the ancillary parts of health care services.

Update: Noah Smith thinks my blog posts and essays aren't long enough. Perhaps a book-length asymmetric-information literature review is a good idea. Someday. 

A paper, and publishing

Even at my point in life, the moment of publishing an academic paper is a one to celebrate, and a moment to reflect.

The New-Keynesian Liquidity Trap is published in the Journal of Monetary Economics -- online, print will be in December. Elsevier (the publisher) allows free access and free pdf downloads at the above link until November 9, and encourages authors to send links to their social media contacts. You're my social media contacts, so enjoy the link and download freely while you can!

The paper is part of the 2012-2013 conversation on monetary and fiscal policies when interest rates are stuck at zero -- the "zero bound" or "liquidity trap." (Which reprised an earlier 2000-ish conversation about Japan.)

At the time, new-Keynesian models and modelers were turning up all sorts of fascinating results, and taking them seriously enough to recommend policy actions. The Fed can strongly stimulate the economy with promises to hold interest rates low in the future. Curiously, the further in the future the promise, the more stimulative.  Fiscal policy, even totally wasted spending, can have huge multipliers. Broken windows and hurricanes are good for the economy. And though price stickiness is the central problem in the economy, lowering price stickiness makes matters worse. (See the paper for citations.)

The paper shows how tenuous all these predictions are. The models have multiple solutions, and the answer they give comes down to an almost arbitrary choice of which solution to pick. The standard choice implies a downward jump in the price level when the recession starts, which requires the government to raise taxes to pay off a windfall to government bondholders. Picking equilibria that don't have this price level jump, and don't require a jump to large fiscal surpluses (which we don't see) I overturn all the predictions. Sorry, no magic. If you want a better economy, you have to work on supply, not demand.

Today's thoughts, though, are about the state of academic publication.

I wrote the paper in the spring and summer of 2013, posted it to the internet, and started giving talks. Here's the story of its publication:

September 2013. Submitted to AER; NBER and SSRN working papers issued. Blog post.
June 2014. Rejected from AER. 3 good referee reports and thoughtful editor report.
October 2014. Submit revision to QJE.
December 2014. Rejected from QJE. 3 more thoughtful referee reports and editor report.
January 2015. Submit revision to JME.
April 2016. Revise and resubmit from JME. 3 detailed referee reports and long and thoughtful editor report.
June 2016. Send revision to JME
July 2017. Accept with minor revisions from JME. Many (good) comments from editor
August 2017. Final revision to JME
September 2017. Proofs, publication online.
December 2017. Published.

This is about typical. Most of my papers are rejected at 2-3 journals before they find a home, and 3-5 years from first submission to publication is also typical. It's typical for academic publishing in general. Parts of this process went much faster than usual. Three months for a full evaluation at QJE is fast. And once accepted, my paper sped through the JME. Another year or two in the pipeline between acceptance and publication is typical.

Note most journals count average time to decision. But what matters is average time to publication of the papers they publish, and what really counts is average time to publication in the journal system as a whole.

Lessons and thoughts?

  • Academic journal publication is not a useful part of communication among researchers or the communication between research and policy. 

Anyone doing research on zero bound in new-Keynesian models in the last 4 years, and carrying on this conversation, interacted with the working paper version of my paper (if at all), not the published version. Any work relying only on published research is hopelessly out of date.

Interest rates lifted off the zero bound quite a while ago, so in the policy conversation this publication at best goes into the shelf of ideas to be revisited if the next recession repeats the last one with an extended period of zero interest rates , and if we see repeated invocation of the rather magical predictions of new-Keynesian models to cure it. If the next recession is a stagflation or a sovereign debt crisis, you're on your own.

Rather than means of communication,

  • Journal publications have become the archive, 

the ark, the library, the place where final, and perfected versions of papers are carved in stone for future generations. (Some lucky papers that make it to graduate reading lists more than 5-10 years after their impact will be read in final form, but not most.)

And this paper is perfected. The comments of nine very sharp reviewers and three thoughtful editors have improved it substantially, along with at dozens of drafts.  Papers are a conversation, and it does take a village.  The paper also benefitted from extensive comments at workshops, and several long email conversations with colleagues.

The passage of time has helped as well. When I go back to a paper after 6 months to a year, I find all sorts of things that can be clearer. Moreover, in the time between first submission and last revision, I wrote four new papers in the same line, and insights from those permeate back to this one.

So, in the end, though the basic points are the same, the exposition is much better.  It's a haiku.  Every word counts.

But such perfection comes at a big cost, in the time of editors and referees, my time, and most of all the cost that the conversation has now moved on.

The sum length of nine referee reports, four reports by three editors, is much longer than the paper. Each one did a serious job, and clearly spent at least a day or two reading the paper and writing thoughtful comments. Moreover, though the reports were excellent, past the first three they by and large made the same points. Was all this effort really worthwhile? I think below on how to economize on referee time.

Of course, for younger people

  • Journal articles are a branding and sorting device. 

Many institutions give tenure, chairs, raises, and other professional advancement based at least in part on numbers and placement of publications. For that purpose, timeliness of publication is less of a problem, but with a six year tenure clock at many places and five year lags, timeliness of acceptance the quality rating is a big problem. The sorting and branding function isn't working that well either. But having journals outsource quality evaluation was always an imperfect institution.  Maybe we should just have star ratings instead -- seriously, start up a website devoted to crowd-sourcing working paper evaluation. Or, perhaps tenure committees will have to actually start reading papers. I don't think the journals see this as their main function either. They're set up to publish papers, not judge people's tenure, so improving journals as a tenure granting mechanism will be a hard sell.

There is some good news that this data point represents, relative to state of journal publishing 15-20 years ago. (See Glenn Ellison's superb "The slowdown in the economics publishing process," JSTORundated, one of my proudest moments as a JPE editor.)

  • Journals are doing fewer rounds, more desk rejection, more one round and up or out.  

Journals had gotten in to a rut of asking for round after round of revisions. Now there is a strong ethic of either rejecting the paper, or doing one round of revisions and then either publishing with minor changes or not. Related,

  • Journal editors are more decisive. 

Journal editors have become, well editors.  The referees provide advice, but the editor thinks about it, decides which advice is good and not, and makes the final call. Editors used to defer decisions to referees, which is part of the reason why there were endless revisions.  This change is very good. Referees have little incentive to bring the process to a close, and they don't see the pipeline of papers to the journal. They are not in a good position to find the right balance of perfection and timeliness.

In my case, editors were very active. The referees wrote thoughtful reports, but largely made similar points. In fact, the strongest advice to reject came at the JME. But the AER and QJE editors were not impressed in the end by the paper, and the JME editor was.

So, with this state of affairs in mind, how might we all work to improve journals and the publication process?

I will take for granted that greater speed, and making journals more effective at communication and not just archiving and ranking is important. For one reason, to the extent that they continue to lose the communication function, people won't send articles there. Already you can notice that after tenure, more and more economists start publishing in conference volumes, invited papers, edited volumes, and other outlets. (blogs!) The fraction willing to take on this labor of love for journal publication declines quickly with age.  Research productivity and creativity does not take quite such a parallel decline. (I hope!)

Always the free-market economist, I note that conference volumes, edited volumes, and solicited papers in regular journals seem to be healthy and increasing, which is a natural response to journal slowdown. This is a way to get papers in print more quickly.  In the early days of the internet I had a rule never to publish in volumes, as they disappeared to library shelves and could not be found electronically. Now many of them have solved that problem. The NBER macro annual and Carnegie-Rochester conferences are good examples. The Review of Finance editor recently solicited my "Macro-finance" essay which therefore sped through publication. My active editors are also often taking a more active role in soliciting promising working papers. This helps to break the editor-to-paper match. But this isn't an ideal state of affairs either. Conference volumes tend towards commissioned work. Original work by people out of the social network of the conference organizers and editors has a tough time. (The market responds, organize more conferences.)

Suggestion one:

  • Adopt the golden rule of refereeing

Around any economist cocktail party, there is a lot of whining that journals should do x y and z to speed things up. I start with what you and I can do. It is: do unto others as you would have them do unto you. If you complain about slow journals, well, how quickly do you turn around reports?

My recommendation, which is the rule I try to follow: Answer the email within a day. Spend an hour or two with the paper, and decide if you will referee it or not. If not, say so that day. If you can give a quick reaction behind your reason, that helps editors. And suggest a few other referees. Often editors aren't completely up to date on just who has written what and who is an ideal fit. If you're not the ideal fit, then help the editor by finding a better fit, and do it right a way.

If you agree to do a report, do it within a week. If you can't do it this week, you're not likely to be able to do it 5 weeks from now, and say no.

More suggestions:

  • Reuse referee reports
Do we really need nine referee reports to evaluate one paper? I always offer editors of journals to whom I send rejected papers the option of using the existing referee reports, along with my response as to how I have incorporated or not their suggestions. Nobody has ever taken me up on this offer. Why not? Especially now that editors are making more decisions? Some people mistakenly view publication as a semi-judicial proceeding, and authors have a "right" to new opinions. Sorry, journals are there to publish papers. 

Why not open refereeing? The report, and author's response, go to a public repository that others can see. Why not let anyone comment on papers? Authors can respond. Often the editor doesn't know who the best person is to referee a paper. Maybe a conference discussant has a good insight. At least one official reviewer could benefit from collecting such information. Some science journals do this. 

Some people would hate this. OK, but perhaps that should be a choice. Fast and public, or slow and private. 

While we're at it, what about
  • Simultaneous submission. Competition (heavens!)  

Journals insist that you only send to one journal at a time. And then wait a year or more to hear what they want to do with it. Especially now that we are moving towards the editor-centric system, and the central question is a match with editor's tastes, why not let journal editors share reviewer advice and compete for who wants to publish it? By essentially eliminating the sequential search for a sympathetic editor, this could speed up the process substantially.

I don't know why lower-ranked journals put up with this. It's the way that the top journals get the order flow of best papers. Why doesn't another journal say, you can send it to us at the same time as you send it to the AER. We'll respect their priority, but if they don't want it we will have first right. The AER almost does this with its field journals. But the JME could get more better papers faster by competing on this dimension.

The journals say they do this to preserve the value of their reviewer time. But with shared or open reviews, that argument falls apart.

We advocate competition elsewhere. Why not in our own profession?

Update: An email correspondent brings up a good point:

  • Journals should be the forum where competing views are hashed out. 
They should be part of the "process of formalizing well argued different points of views --  not refereeing "the truth." We dont know the truth. But hopefully get closer to it by arguing. [In public, and in the journals] The neverending refereeing [and editing and publishing] process is shutting down the conversation."

When I read well argued papers that I disagree with, I tend to write "I disagree with just about everything in this paper. But it's a well-argued case for a common point of view. If my devastating report does not convince the author, the paper should be published, and I should write up my objections as a response paper." 




Duet Redux

Another duet of headlines with an interesting lesson, both from the Wall Street Journal:

Solar power death wish
Suniva Inc., a bankrupt solar-panel maker, and German-owned SolarWorld Americas have petitioned the U.S. International Trade Commission (ITC) to impose tariffs on foreign-made crystalline silicon photovoltaic cells. 
Solar cells in the U.S. sell for around 27 cents a watt. The petitioners want to add a new duty of 40 cents a watt. They also want a floor price for imported panels of 78 cents a watt versus the market price of 37 cents. 
they’re resorting to Section 201 of the Trade Act of 1974 because they don’t need to show they are victims of dumping or foreign government subsidies. They only need to show that imports have harmed them
California Democrats Target Tesla
The United Automobile Workers are struggling for a presence in Tesla’s Fremont plant, and organized labor has called in a political favor. 
Since 2010 California has offered a $2,500 rebate to encourage consumers to buy electric vehicles. But last week, at unions’ behest, Democrats introduced an amendment to cap-and-trade spending legislation that would require participating manufacturers to get a sign-off from the state labor secretary verifying that they are “fair and responsible in their treatment of workers.” 
The legislation, which passed Friday, is a direct shot at Tesla. The Clean Vehicle Rebate Project has amounted to a $82.5 million subsidy for the company
Both moves ought to pose a liberal conundrum. If you want carbon reduction, you want cheap solar cells, so that more people will buy them. The planet does not care where the solar cells are produced. If you want electric cars, you want cheap electric cars so that more people will buy them.

But those who falsely sold green energy as a job producer, a boon to the economy; not a costly alternative to fossil fuels, a cost that must be borne to save the planet, now face this conundrum.

The deeper lesson here is the corrosive nature of subsidies and protection. Once the government starts subsidizing solar cells and electric cars, there is a quite natural force demanding access to the subsidies. Why should the owners of the Tesla company get largesse from the taxpayers, and not their workers too?

Solar cells are just the latest embodiment of the infant industry fallacy -- that protection from competition will allow an industry to grow and become competitive.  Instead, they become infantile industries, expert and getting protections and subsidies not producing cheap solar cells.

The infrastructure paradox is similar. We need infrastructure. Yet federal contracting requirements, requirements for union workers and union wages, and everything else attracted to federal money being handed out, drive costs up to astronomical levels.

For energy, this is an abject lesson in the wisdom of a simple carbon (and methane) tax in place of all the subsidies and winner-and-loser-picking our government does. (Let's not fight about whether to do it. The point is if we want to restrict fossil fuels and subsidize a move to non-carbon energy, this is how to do it.) Subsidies and protection invite demands for subsidies and protection, not clean energy.

Stranded profits

The tax reform discussion includes the idea that by moving to a territorial system, US companies will bring lots of money stranded offshore back to the US, unleashing a wave of investment here. While I think a territorial system makes sense, as does reducing or eliminating the corporate tax, as a pure matter of economics, I don't think this repatriation argument makes sense.

Here's why. (The following is a story, not a fact about Apple accounting.) Apple sells an Iphone in Spain. Apple Spain pays a huge licensing fee on software, owned by Apple Ireland, so it's not a profit in Spain. Apple Ireland thus collects huge amounts of cash from all over the world, taxed at the low Irish corporate tax rate. Apple Ireland deposits this cash in an Irish bank. (I presume they do fancier things with the money, but I'm telling a story here). The cash is "stranded" overseas, right?

No. The Irish bank can lend the money anywhere. It can buy US mortgage backed securities, it can lend the money wholesale to US banks who lend it out to US businesses. It can even lend the money to Apple US. If Apple or any other US company wants to invest, they can borrow from the Irish bank. Conversely, if profits are repatriated to US banks, those banks can lend the money overseas.

If Apple's Irish bank invests exclusively in, say Spanish condos, then the Spanish bank that would have made the condo loan instead loans to the US. Conversely, even if the profits are "repatriated" to a US bank, if investment opportunities are better abroad, that's where the investment will happen.

You can't avoid two fundamental truths: 1) Money is fungible. 2) Savings - Investment = Net Exports.

Yes, there are some second order effects. If money comes back to US banks, US banks get to earn the fees. Internal capital can be cheaper then external; it's inefficient to send your own money to yourself through a bank. But these are second order, and that's not the argument being made.

It's still a good idea, but for other reasons. Reduction or elimination of corporate taxes will make US investment more profitable, and that will attract money from abroad. But don't count on a wave of repatriated profits to mean much more than a big financial change.  Even if it happens. There are many other reasons to keep pots of money overseas these days. Bad arguments for good policies are not, in the end, a good idea.

Duet

Sometimes the blog posts write themselves from contrasting newspaper headlines.

New York Times

New Gene-Therapy Treatments Will Carry Whopping Price Tags
By GINA KOLATA September 11, 2017

Emily Whitehead, the first pediatric patient to receive the gene-therapy treatment Kymriah, which put her leukemia into remission. The treatment has a $475,000 price tag, raising questions about how patients and insurers will pay. ...
One drug, to prevent blindness in those with a rare genetic disease, for example, is expected to cost between $700,000 and $900,000 per patient on average,..

Washington Post

The dam is breaking on Democrats’ embrace of single-payer
By Aaron Blake September 12 at 9:39 AM

Sen. Cory Booker (D-N.J.) became the fourth co-sponsor of Sen. Bernie Sanders's (I-Vt.) “Medicare for all” health-care bill Monday. In doing so, he joined Sens. Elizabeth Warren (D-Mass.) and Kamala D. Harris (D-Calif.). 
What do those four senators have in common? Well, they just happen to constitute four of the eight most likely 2020 Democratic presidential nominees, according to the handy list I put out Friday. 
Update: Gillibrand just signed on to Sanders's "Medicare for all" bill. So now 5 of my top 8 potential 2020 Democratic nominees have now come out for the bill -- before it is even introduced. "Health care should be a right, not a privilege, so I will be joining Senator Bernie Sanders as a cosponsor on his Medicare-for-All legislation," Gillibrand said.
Hint. Budget constraints? Hint 2: get ready to start making lots of noise if you want treatment.

By the way, let us watch for the crucial buzzword question. Does "single payer" mean there is a single payer that anyone can use -- but you're free to buy and sell your own insurance on top of that, hopefully deregulated since there is no need to regulate anymore, everyone has access to medicare for all? Or does "single payer" mean there is a single payer that everyone must use -- private insurance, private practice, just paying cash illegal, to cross-subsidize the system? I fear the latter. We'll see.

The previous champion was stories on the same page in WSJ, roughly ``self driving trucks coming soon'' and ``shortage of truck drivers.'' I lost the link.

Online Asset Pricing is back!

The online Asset Pricing Ph.D. class is back! It died in a Coursera "upgrade," but it is now migrated over to Canvas.

Click here to go to the online class. My Asset Pricing webpage has links to the class, book, and many other useful materials.

It should be open and free to anyone, including all the quizzes, problem sets and exams.

Since it's on the Canvas system, if you are teaching at a University that uses Canvas, you should be able to integrate it with your class, assign all or part of it, and receive grades from quizzes and problem sets. Thus, you can use it as a flipped classroom, assign selected videos and quizzes in advance of a lecture.

It is also ideal for a Ph. D.  program summer school for year 0 or year 1. Again, through Canvas you should be able to assign the class, in whole or in part, and get grades.

It's also well suited to self-study. If you just want to watch the videos and read the notes, they are all here via youtube links on the Asset Pricing webpage.

Huge thanks to Emily Bembeneck and Allison Kallo at the University of Chicago, Mikhail Proshletsov, and above all to Nina Karnaukh now at Ohio State. Nina masterminded all the hard work of moving the class pages and quizzes from the Coursera system to the Canvas system, and fixing innumerable glitches along the way. Thanks also to the Booth School for paying for the transition.

In the name of Science

Source: climatefeedback.org
"Climate Feedback" has produced a "scientific review" of my WSJ oped with David Henderson on (Oped ungated full text here, see also associated blog post.)

In the blog post, I wrote,
"If it is not clear enough, nothing in this piece takes a stand on climate science, either affirming or denying current climate forecasts. I will be interested to see how quickly we are painted as unscientific climate-deniers."
Now we know the answer. 

To recap, the oped said nothing about climate science, nothing about climate computer model forecasts, and did not even question the integrated model forecasts of economic damage. We did not deny either climate change nor did we argue against CO2 mitigation policies in principle. For argument's sake we granted a rather extreme forecast (level of GDP reduced by 10% forever) of economic costs. We did not even question the highly questionable cost-benefit analyses of policies subject to cost benefit analysis. We mostly complained about the lack of any cost benefit analysis, and the quantitative nonsense of many claims.

So, it's curious that there could be any "scientific" review of a purely economic article in the first place. How do they do it? 
Aaron Bernstein, Associate Director of the Center for Health and the Global Environment, Boston Children’s Hospital, Harvard: writes 
"Although many claims in this op-ed don’t mesh with reality, [no example stated] the most concerning delusion presented is that the health costs of climate change are both known and manageable. Legitimate economic analyses have put the costs of climate change at 2100 to GDP at several percent to more than 20%[1], with the variability largely due to different discount rates." 
We did not say known. We cited estimates, which have standard errors. We cited 10% of the level of GDP, forever. The response cites the discounted cost of all future GDP loss, in terms of one year's  GDP. Our number is much larger. 10% of GDP forever has a discounted value of 10%/(interest rate - growth rate). If interest rate - growth rate is one percentage point, then 10% of GDP forever is worth 10 times annual GDP, 1000% a lot more than 20%. If we took his number, total discounted costs only 20%, then climate change would truly be trivial. Even if he were answering our 10% with 20%, a factor of two is couch change in this business. OK, two tenths of a percentage point of growth.

(The quote is only about losses up to 2100, so you don't get the full r-g effect, but you see the point -- apples to oranges. The lesson is don't divide a present value by one year's flow. The discounted costs are an even larger fraction of a minute's GDP.)  

Bernstein  continues: 
"Even these higher damage estimates may fail to capture the full costs of extreme events over time, as Martin Weitzman’s work has shown. But there’s another, and more difficult, rub. What if we don’t understand the full consequences of greenhouse gas emissions? "
and continues with a standard list of things that might go wrong. We had written, 
"... some advocate that we buy some “insurance.” Sure, they argue, the projected economic cost seems small, but it could turn out to be a lot worse. "
and addressed the issue. 

"Science" and "scientific" review is supposed to include the ability to read and basic quantification. 

David Easterling, Chief of the Scientific Services Division, NOAA's National Climatic Data Center writes:
"This is a very simplistic, almost naive op-ed on climate change impacts." ...
It wasn't an oped on climate change impacts. It was an oped on cost-benefit analysis of policies to address climate change impacts, and never questioned any climate change impacts. 
"The idea that Miami is going to build a dike like Rotterdam is almost laughable. Of course climate change is not the only risk to society, but it is the biggest environmental risk. And most large buildings (e.g. Empire State Building) are not rebuilt every 50 years, only smaller, more expendable ones are."
Just why is building dikes, or other adaptations laughable? Miami is 7 feet above sea level, Rotterdam about the same below sea level, and 7 is greater than most estimates of sea level rise. Rotterdam did it. Climate change is the biggest environmental risk? More than nuclear war, chemical pollution, the crap in the water that most people in the world drink, malaria, loss of habitat, poaching, all put together? A citation or two comparing climate change to the others would be nice. And the total value of smaller more expendable buildings is far larger than the total value of Empire State buildings. 

Easterling falls neatly into our trap. We accused the politicized climate policy community for leaving quantitative, cost-benefit policy analysis behind and he... leaves quantitative cost benefit policy analysis behind.  

Frank Vöhringer, Dr. rer. pol, Scientist, Ecole Polytechnique Fédérale de Lausanne (EPFL), 
"The article plays down impacts of climate change that most studies consider to be highly important: e.g. the death toll of heat waves, hazards to coastlines, costs and friction of migration and other adaptation.... economic studies suggest that the risks of climate change are important, especially in certain economic segments (e.g. agriculture, health) and for low income countries with low capacity for adaptation. The article fails to mention that hazards and distributive issues of climate change increase all the other risks that the authors itemize, “nuclear explosions, a world war, global pandemics, crop failures and civil chaos”, even if it is not yet clear to what extent."
Verena Schoepf, Research Associate, The University of Western Australia, 
"The authors seem unaware of many consequences of climate change, particularly related to the ocean. The increase in ocean acidity and temperature, due to uptake of atmospheric CO2, will have tremendous consequences for many marine organisms and thus ultimately humans via sea level rise, impacts on weather and climate, food security, etc."
Wolfgang Cramer, Professor, Directeur de Recherche, Mediterranean Institute for Biodiversity and Ecology (IMBE) continues in the same vein.  

This is all simply untrue. We didn't "play down" any costs, and certainly not "economic studies," which we fully acknowledge. We do take for granted all the scientific, computer modeling and economic model estimates (though there is plenty to argue with there, but that's for another day). Nothing in the oped questions any of this. And "fails to mention" has to respect our limits: the WSJ gives us 900 words. We can't mention everything. 

Moreover, we acknowledge and consider
"Yes, the costs are not evenly spread. Some places will do better and some will do worse...."
We acknowledge and consider that
"Migration is costly. But much of the world’s population moved from farms to cities in the 20th century...."  
Not bad for 900 words.

Wolfgang Cramer, Professor, Directeur de Recherche, Mediterranean Institute for Biodiversity and Ecology (IMBE) continues, but I'm running out of steam. You get the idea.

Bottom line

Our main charge for the climate-policy community was, 
"Scientific, quantifiable or even vaguely plausible cause-and-effect thinking are missing from much advocacy for policies to reduce carbon emissions. "
climatefeedback.org has nicely illustrated exactly such flights from scientific, quantifiable, or even vaguely plausible cause and effect thinking. Notice not one counterexample in my quotes or the whole post. Along with a striking inability to read, and a fascinating will to put words in people's mouths that aren't there.

Let me offer a little "scientific review" of this "scientific review." N=5 is a small data sample. There is this little concept called "selection bias." Offering highly interested people a chance to blast an oped is not a "scientific review."

Blogging, opedding, publishing your political opinions is what democracy and free speech are all about. Just don't call it "science." 

Like most people, I revere "science." Its dispassionate quest for the truth has brought us unimagined prosperity. But, dear climate policy "scientists," be careful,  if you are going to invoke the imprimatur of "science" you had darn well better be right. If you end up saying "never mind," as the food establishment has done with the 1970s advice to eat margarine and sugar instead of animal fats, the public prestige of science, and all the good for policy it has brought, will come crashing down. You will be treated no more seriously than economists. And that will be a great tragedy. The fact that you are using such unscientific method in your policy analysis is an early warning sign.

I wrote to the climatefeedback editor, requesting that they post a link to this response on their "review." It will be an interesting test of what ethics remain part of "science" to see if they do that, or answer my email.

Update: climatefeedback answers, in the true spirit of dispassionate transparency that "science" demands:

Hello John,
Thank you for reaching out. We could agree to add a link in our review acknowledging
 your reply; we only require that The Wall Street Journal adds a link to our review from your article.
Thank you,
Emmanuel Vincent
I replied with a guffaw. Grumpy enjoys good snark as much as the next person. I invited them to post a comment at WSJ, which at least WSJ allows and climatefeedback does not ("feedback" does not even include comments), and allow me to post a comment at their site.

I also pointed out that the Wall Street Journal oped page is explicitly an opinion page, while they pretend to be a page of "scientific review." In the old days "science" publications were not opinion, and operated by greater standards of transparency and openness. (Though, not only through comments and letters, even the WSJ opinion page would publish a response such as mine. Editors have contacted me in the past with several inquiries about my articles.)

Not allowing a criticized author a link to a response, forget about posting the response itself, is way out of the bounds of "scientific" ethics. Proof again that the name of "science" is taken in vain here. 

Tax Reform Again

A Wall Street Journal oped on tax reform. This complements an earlier oped and see the tax link at right for many others.

The bottom line: I argue for a national VAT instead of (and that is crucial) individual and corporate income taxes, estate taxes, and anything else.

Why? I want to break out of our stale argument. "Lower taxes to boost the economy"  vs. "you just want tax cuts for the rich." It's not going to go anywhere.

I also want to break out of the process. Proposing cuts within the current structure of the tax code, even if proposing them with offsetting cuts in deductions, leads naturally right back to the mess we're in.

Once you tax income much of the rest of the mess follows inexorably.  If we go back to the beginning, and tax spending not income, so much mess vanishes.

Once the government taxes income, it must tax corporate income or people would incorporate to avoid paying taxes. Yet the right corporate tax rate is zero. Every cent of corporate tax comes from people via higher prices, lower wages, or lower payments to shareholders. And a corporate tax produces an army of lawyers and lobbyists demanding exemptions. 
An income tax also leads to taxes on capital income. Capital income taxes discourage saving and investment. But the government is forced to tax capital income because otherwise people can hide wages by getting paid in stock options or “carried interest.”
The estate tax can take close to half a marginal dollar of wealth. This creates a strong incentive to blow the family money on a round-the-world cruise, to spend lavishly on lawyers, or to invest inefficiently to avoid the tax. 
Today’s tax code tries to limit this damage with a welter of complex shelters: 401(k), 526(b), IRA, HSA, deductions for corporate investment, and complex real-estate and estate-tax shelters. Taxing something and then offering complex shelters is a sure sign of pathology. But by taxing cars, houses and boats when people or companies buy them, all this complexity can be thrown out. With a VAT, money coming from every source—wages, dividends, capital gains, inheritances, stock options and carried interest—is taxed when it’s spent. [I left out the whole mess of corporate investment deductions and credits, plus foreign income. All vanishes with a VAT.]
A reformed tax code should involve no deductions—including the holy trinity of mortgage interest, employer-provided health insurance, and charitable deductions. The interest groups for each of these deductions are strong. But if the government doesn’t tax income in the first place, these deductions vanish without a fight.
Zero is important. Eliminating the personal income, corporate income and estate taxes is important. Taxes are like zombies. If you just reduce the rates but leave the taxes in the code, they come back.  And all the deductions, exclusions, credits and the rest come back too. If we just compromise for a VAT in exchange for lower individual and corporate rates, we really will end up at European levels of taxes -- 20%+ VAT, 50% income tax, 20-40% payroll tax, 40%+ estate taxes.

BTW, I should be clear what a VAT is. You pay the VAT, say 20%, on everything you buy. It's collected by the seller. You collect the same VAT on everything you sell, but you may deduct the VAT you have paid on your purchases. If I am in charge, period. Notice this gives people an incentive to collect the VAT.

In this way, a VAT is, in fact, something of a corporate tax, and is largely "paid by" corporations. But it does not distort rates of return as much. More importantly, it is clearer, more transparent, and allows us to throw out the mess of the corporate tax code. The border-adjusted corporate tax reform was sold as a step towards a VAT, and it was -- if you have a PhD in economics to figure that out -- though it retains all the special deductions and carve outs of the corporate tax code. We need a tax that the average voter can understand, and a clean slate.

A second theme of this oped, though for lack of space less visible: Tax reform is stalled because we try to do too much. We try simultaneously to

1) Raise revenue for the government
2) Redistribute income to people with lower incomes
3) Redistribute income to homeowners, electric car drivers, farmers, etc. etc. etc. (Despite the hullabaloo about income redistribution, there is a lot more of this)
4) Redistribute income away from "the rich"
5) Subsidize various activities and industries. Practically all of them. (We simultaneously tax, subsidize, regulate and promote most industries.)
6) Arguments about the structure of the tax code are mixed up with arguments about tax rates, the overall level of taxes, the overall level of spending.

Really, the current discussion is disheartening to an economist, who sees taxes as a necessary evil to raise revenue for the government, to be done with the lowest marginal rates and lowest distortions possible.  The current discussion, entirely on the left and mostly on the right, sees taxes pretty much only as an instrument of redistribution to one or another class.

Eliminating the income tax in favor of a uniform VAT, leaving the rate blank, lets us fix the structure of the tax code without getting sidetracked with all these other issues.

What about progressivity and redistribution? The oped explains briefly how to make a VAT progressive, if that's what you want. The idea is explained more at length in an earlier post. Briefly, you get a rebate for VAT on your first $10,000 of expenditures, half on the next $10,000 and so on. The rebate can happen instantly, like a giant rewards program for debit cards.

But it is becoming clearer to me that our redistribution system is just as chaotic as our tax system. A major observation: Why should every measure be assessed for its redistribution in isolation? For example, a major complaint on the left on the corporate income tax is the idea that corporate taxes end up being paid by shareholders, which are rich people, so it's redistributive. I don't think the fact is right -- corporate taxes are paid more by higher prices and lower wages, and we're all shareholders through our pension funds. But even if we admit the fact, that's a bloody inefficient way to achieve redistribution. The entire corporate tax, with all its shenanigans, exists to try to get more money out of shareholders? Just tax them directly! Get your redistribution elsewhere, and not this way.

So, the thought touched on in the oped: We need at least a comprehensive measure of redistribution, and much more fine-grained than just across income categories. We could have a much flatter tax code if we had a more aggressive social welfare state, no? We should be able to trade these things off, getting better taxes and more effective redistribution, to people who really need the money.

Both points are part of a more general point. We have become obsessed with income, both in taxation and in redistribution. America is becoming a class society with class defined by income. So many social programs treat income the way India used to treat caste. But income is a terrible measure, with little economic meaning. My mid 20's children are "low income." Consumption is a far better measure. And in terms of who deserves taxpayer funded help, we can think of a hundred characteristics that matter -- disability status, say -- much more than income. The income tax and vast amount of redistribution that happens on income alone is reinforcing this. Tax people by what they spend.

Related, a standard objection to the VAT is that it is "regressive." Poor people spend a larger fraction of their incomes, so in a flat VAT they will pay more of their income in tax. First, I answer that with the progressive VAT. But more deeply, why should progressivity be measured as a fraction of income which has little economic meaning, rather than as a fraction of consumption  in the first place? If I leave my income invested for others to use it to build factories, why tax that? Yes, I will be richer in the future, and we will tax that when and if I spend it. If I never spend it... well, good for me. Annual income is just not a particularly useful economic concept.

There are lots of other almost as good ways to implement a consumption tax. The Hall-Rabushka Flat Tax is one, various proposals to implement a progressive consumption tax via the current income tax mechanism is another. My VAT shares a lot with the Fair Tax proposal to replace the income tax with a national sales tax. But reflecting on it, I like the finality of not even measuring income any more. Remember the zombies. And a VAT works better than a sales tax.

However, the VAT is not a pure consumption tax, and I'm not persuaded it needs to be. (The title is a bit misleading, but I don't get to pick oped titles.) I would tax investment goods at the same rate as consumption goods. If not, then a lot of shenanigans will erupt trying to define what's an investment good and what is a consumption good. Is the corporate Ferrari a "investment?" A real corporate investment, like real corporate purchases of VAT taxed inputs, will yield profitable goods, and the VAT paid on investment can be deducted on the sale of those goods. Yes, it will be a few years later, but if the investment is worthwhile the profits should be larger if they come later. Yes, it's not as pure, but it's close -- we avoid the chaotic capital taxation of today, and we avoid trying to make a distinction between investment goods and consumption goods. Everyone pays the VAT. Everyone.

Please don't bother to comment that we can't have a VAT because the politicians will just add back the income tax.  I know the argument. If our country cannot legislate "we put in a VAT, we eliminate the income tax, and that's it," then democracy is doomed already.

As usual, full text in 30 days, or get creative with your Googling.

Update:  I learned of a precedent for the progressive VAT idea, Yaacobi Nir, "Progressive V.A.T. as a Substitute for Income Tax" December 2008