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A new macroeconomics?

UPDATE: The video of this panel is here.

[On Friday, July 2, I am taking part in a panel organized by Economics for Inclusive Prosperity on “A new macroeconomics?” This is my contribution.]

Jón Steinsson wrote up some thoughts about the current state of macroeconomics. He begins:

There is a narrative within our field that macroeconomics has lost its way. While I have some sympathy with this narrative, I think it is a better description of the field 10 years ago than of the field today. Today, macroeconomics is in the process of regaining its footing. Because of this, in my view, the state of macroeconomics is actually better than it has been for quite some time.

I can’t help but be reminded of Olivier Blanchard’s 2008 article on the state of macroeconomics, which opened with a flat assertion that “the state of macro is good.” I am not convinced today’s positive assessment is going to hold up better than that one.

Where I do agree with Jón is that empirical work in macro is in better shape than theory. But I think theory is in much worse shape than he thinks. The problem is not some particular assumptions. It is the fundamental approach.

We need to be brutally honest: What is taught in today’s graduate programs as macroeconomics is entirely useless for the kinds of questions we are interested in.

I have in front of me the macro comp from a well-regarded mainstream economics PhD program. The comp starts with the familiar Euler equation with a representative agent maximizing their utility from consumption over an infinite future. Then we introduce various complications — instead of a single good we have a final and intermediate good, we allow firms to have some market power, we introduce random variation in the production technology or markup. The problem at each stage is to find what is the optimal path chosen by the representative household under the new set of constraints.

This is what macroeconomics education looks like in 2021. I submit that it provides no preparation whatsoever for thinking about the substantive questions we are interested in. It’s not that this or that assumption is unrealistic. It is that there is no point of contact between the world of these models and the real economies that we live in.

I don’t think that anyone in this conversation reasons this way when they are thinking about real economic questions. If you are asked how serious inflation is likely to be over the next year, or how much of a constraint public debt is on public spending, or how income distribution is likely to change based on labor market conditions, you will not base your answer on some kind of vaguely analogous questions about a world of rational households optimizing the tradeoff between labor and consumption over an infinite future. You will answer it based on your concrete institutional and historical knowledge of the world we live in today.

To be sure, once you have come up with a plausible answer to a real world question, you can go back and construct a microfounded model that supports it. But so what? Yes, with some ingenuity you can get a plausible Keynesian multiplier out of a microfounded model. But in terms of what we actually know about real economies, we don’t learn anything from the exercise that the simple Keynesian multiplier didn’t already tell us.

The heterogenous agent models that Jón talks about are to me symptoms of the problem, not signs of progress. You start with a fact about the world that we already knew, that consumption spending is sensitive to current income. Then you backfill a set of microfoundations that lead to that conclusion. The model doesn’t add anything, it just gets you back to your starting point, with a lot of time and effort that you could have been using elsewhere. Why not just start from the existence of a marginal propensity to consume well above zero, and go forward from there?

Then on the other hand, think about what is not included in macroeconomics education at the graduate level. Nothing about national accounting. Nothing about about policy. Nothing about history. Nothing about the concrete institutions that structure real labor and product markets.

My personal view is that we need to roll back the clock at least 40 years, and throw out the whole existing macroeconomics curriculum. It’s not going to happen tomorrow, of course. But if we want a macroeconomics that can contribute to public debates, that should be what we’re aiming for.

What should we be doing instead? There is no fully-fledged alternative to the mainstream, no heterodox theory that is ready to step in to replace the existing macro curriculum. Still, we don’t have to start from scratch. There are fragments, or building blocks, of a more scientific macroeconomics scattered around. We can find promising approaches in work from earlier generations, work in the margins of the profession, and work being done by people outside of economics, in the policy world, in finance, in other social sciences.

This work, it seems to me, shares a number of characteristics.

First, it is in close contact with broader public debates. Macroeconomics exists not to study “the economy” in the abstract — there isn’t any such thing — but to help us address concrete problems with the economies that we live in. The questions of what topics are important, what assumptions are reasonable, what considerations are relevant, can only be answered from a perspective outside of theory itself. A useful macroeconomic theory cannot be an axiomatic system developed from first principles. It needs to start with the conversations among policymakers, business people, journalists, and so on, and then generalize and systematize them.

A corollary of this is that we are looking not for a general model of the economy, but a lot of specialized models for particular questions.

Second, it has national accounting at its center. Physical scientists spend an enormous amount of time refining and mastering their data collection tools. For macroeconomics, that means the national accounts, along with other sources of macro data. A major part of graduate education in economics should be gaining a deep understanding of existing accounting and data collection practices. If models are going to be relevant for policy or empirical work, they need to be built around the categories of macro data. One of the great vices of today’s macroeconomics is to treat a variable in a model as equivalent to a similarly-named item in the national accounts, even when they are defined quite differently.

Third, this work is fundamentally aggregative. The questions that macroeconomics asks involve aggregate variables like output, inflation, the wage share, the trade balance, etc. No matter how it is derived, the operational content of the theory is a set of causal relationships between these aggregate variables. You can certainly shed light on relationships between aggregates using micro data. But the questions we are asking always need to be posed in terms of observable aggregates. The disdain for “reduced form” models is something we have to rid ourselves of.

Fourth, it is historical. There are few if any general laws for how “an economy” operates; what there are, are patterns that are more or less consistent over a certain span of time and space. Macroeconomics is also historical in a second sense: It deals with developments that unfold in historical time. (This, among other reasons, is why the intertemporal approach is fundamentally unsuitable.) We need fewer models of “the” business cycle, and more narrative descriptions of individual cycles. This requires a sort of figure-ground reversal in our thinking — instead of seeing concrete developments as case studies or tests of models, we need to see models as embedded in concrete stories.

Fifth, it is monetary. The economies we live in are organized around money commitments and money flows, and most of the variables we are interested in are defined and measured in terms of money. These facts are not incidental. A model of a hypothetical non-monetary economy is not going to generate reliable intuitions about real economies. Of course it is sometimes useful to adjust money values for inflation, but it’s a bad habit to refer to the result quantities as “real” — it suggests that there is some objective quantity lying behind the monetary one, which is in no way the case.

In my ideal world, a macroeconomics education would proceed like this. First, here are the problems the external world is posing to us — the economic questions being asked by historians, policy makers, the business press. Second, here is the observable data relevant to those questions, here’s how the variables are defined and measured. Third, here are how those observables have evolved in some important historical cases. Fourth, here are some general patterns that seem to hold over a certain range — and just as important, here is the range where they don’t. Finally, here are some stories that might explain those patterns, that are plausible given what we know about how economic activity is organized.

Well, that’s my vision. Does it have anything to do with a plausible future of macroeconomics?

I certainly don’t expect established macroeconomists to throw out the work they’ve been doing their whole careers. Among younger economists, at least those whose interest in the economy is not strictly professional, I do think there is a fairly widespread recognition that macroeconomic theory is at an intellectual dead end. But the response is usually to do basically atheoretical empirical work, or go into a different field, like labor, where the constraints on theory are not so rigid. Then there is the heterodox community, which I come out of. I think there has been a great deal of interesting and valuable work within heterodox economics, and I’m glad to be associated with it. But as a project to change the views of the rest of the economics profession, it is clearly a failure.

As far as I can see, orthodox macroeconomic theory is basically unchallenged on its home ground. Nonetheless, I am moderately hopeful for the future, for two reasons.

First, academic macroeconomics has lost much of its hold on public debate. I have a fair amount of contact with policymakers, and in my experience, there is much less deference to mainstream economic theory than there used to be, and much more interest in alternative approaches. Strong deductive claims about the relationships between employment, inflation, wage growth, etc. are no longer taken seriously.

To be sure, there was always a gulf between macroeconomic theory and practical policymaking. But at one time, this could be papered over by a kind of folk wisdom — low unemployment leads to inflation, public deficits lead to higher interest rates, etc. — that both sides could accept. Under the pressure of the extraordinary developments of the past dozen years, the policy conversation has largely abandoned this folk wisdom — which, from my point of view, is real progress. At some point, I think, academic economics will recognize that it has lost contact with the policy conversation, and make a jump to catch up.

Keynes got a lot of things right, but one thing I think he got wrong was that “practical men are slaves to some defunct economist.” The relationship is more often the other way round. When practical people come to think about economy in new ways, economic theory eventually follows.

I think this is often true even of people who in their day job do theory in the approved style. They don’t think in terms of their models when they are answering real world questions. And this in turn makes our problem easier. We don’t need to create a new body of macroeconomic theory out of whole cloth. We just need to take the implicit models that we already use in conversations like this one, and bring them into scholarship.

That brings me to my second reason for optimism. Once people realize you don’t have to have microfoundations, that you don’t need to base your models on optimization by anyone, I think they will find that profoundly liberating. If you are wondering about, say, the effect of corporate taxation on productivity growth, there is absolutely no reason you need to model the labor supply decision of the representative household as some kind of intertemporal optimization. You can just, not do that. Whatever the story you’re telling, a simple aggregate relationship will capture it.

The microfounded approach is not helping people answer the questions they’re interested in. It’s just a hoop they have to jump through if they want other people in the profession to take their work seriously. As Jón suggests, a lot of what people see as essential in theory, is really just sociological conventions within the discipline. These sorts of professional norms can be powerful, but they are also brittle. The strongest prop of the current orthodoxy is that it is the orthodoxy. Once people realize they don’t have to do theory this way, it’s going to open up enormous space for asking substantive questions about the real world.

I think that once that dam breaks, it is going to sweep away most of what is now taught as macroeconomics. I hope that we’ll see something quite different in its place.

Once we stop chasing the will-o-wisp of general equilibrium, we can focus on developing a toolkit of models addressed to particular questions. I hope in the years ahead we’ll see a more modest but useful body of theory, one that is oriented to the concrete questions that motivate public debates; that embeds its formal models in a historical narrative; that starts from the economy as we observe it, rather than a set of abstract first principles; that dispenses with utility and other unobservables; and that is ready to learn from historians and other social scientists.

The Roaring 2020s: Further Reading

Mike Konczal and I have a piece in the New York Times arguing that the next few years could see a historic boom for the US economy, if policy makers recognize that strong demand and rising wages are good things, and don’t get panicked into turning toward austerity.

Mike and I and our colleagues at the Roosevelt Institute are planning a series of papers on “planning for the boom” over the coming year. The first, asking how high employment could plausibly rise under conditions of sustained strong demand, will be coming out later this month. In the meantime, here are some things I’ve written over the past few years, making the case that there is much more space for demand-led growth in the US economy than conventional estimates suggest, and that the benefits from pursuing it are broader than just producing more stuff.

In my recent post on the economics of the Rescue Plan, I highlighted the way in which the expansive public spending of the Biden administration implicitly embraces a bigger role for aggregate demand in the longer term trajectory of the economy and not just in short-run fluctuations:

Overheating may have short-term costs in higher inflation, inflated asset prices and a redistribution of income toward relatively scarce factors (e.g. urban land), but it also is associated with a long-term increase in productive capacity — one that may eventually close the inflationary gap on its own. Shortfalls on the other hand lead to a reduction in potential output, and so may become self-perpetuating as potential GDP declines.

I’ve continued making this argument in an ongoing debate with the University of Chicago’s Harold Uhlig at this new site Pairagraph. I also discussed it with David Beckworth on his excellent macroeconomics podcast.

In many ways, this story starts from debates in the mid 2010s about the need for continued stimulus, which got a big impetus from Bernie Sanders first campaign in 2016. I tried to pull together those arguments in my 2017 Roosevelt paper What Recovery? There, I argued that the failure of per-capita GDP to return to its previous trend after 2009 was a striking departure from previous recessions; that an aging population could not explain the fall in labor fore participation; that slower productivity growth could be explained at least in part by weak demand; and the the balance of macroeconomic risks favored stimulus rather than austerity.

In a more recent post, I noted that the strong growth and low unemployment of the later part of the decade, while good news in themselves, implied an even bigger demand shortfall in the aftermath of the recession:

In 2014, the headline unemployment rate averaged 6.2 percent. At that time, the benchmark for full employment (technically, the non-accelerating inflation rate of unemployment, or NAIRU) used by the federal government was 4.8 percent, suggesting a 1.4 point shortfall, equivalent to 2.2 million excess people out of work. But let’s suppose that today’s unemployment rate of 3.6 percent is sustainable—which it certainly seems to be, given that it is, in fact, being sustained. Then the unemployment rate in 2014 wasn’t 1.4 points too high but 2.6 points too high, nearly twice as big of a gap as policymakers thought at the time.

I made a similar set of arguments for a more academic audience in a chapter for a book on economics in the wake of the global financial crisis, “Macroeconomic Lessons from the Past Decade”. There, I argue that

the effects of demand cannot be limited to “the short run”. The division between a long-run supply-side and a short-run demand-side, while it may be useful analytically, does not work as a description of real world developments. Both the size of the labor force and productivity growth are substantially endogenous to aggregate demand.

This set of arguments is especially relevant in the context of climate change; if there is substantial slack in the economy, then public spending on decarbonization can raise current living standards even in the short run. Anders Fremstad, Mark Paul and I made this argument in a 2019 Roosevelt report, Decarbonizing the US Economy: Pathways toward a Green New Deal. I made the case much more briefly in a roundtable on decarbonization in The International Economy:

The response to climate change is often conceived as a form of austerity—how much consumption must we give up today to avoid the costs of an uninhabitable planet tomorrow? … The economics of climate change look quite different from a Keynesian perspective, in which demand constraints are pervasive and the fundamental economic problem is not scarcity but coordination. In this view, the real resources for decarbonization will not have to be withdrawn from other uses. They can come from an expansion of society’s productive capabilities, thanks to the demand created by clean-energy investment itself.

If you like your economics in brief video form, I’ve made this same argument about aggregate demand and climate change for Now This.

The World War II experience, which Mike and I highlight in the Times piece, is discussed at length in a pair of papers that Andrew Bossie and I wrote for Roosevelt last year. (Most of what I know about the economics of the war mobilization is thanks to Andrew.) In the first paper, The Public Role in Economic Transformation: Lessons from World War II, we look at the specific ways in which the US built a war economy practically overnight; the key takeaway is that while private contractors generally handled production itself, most investment, and almost all the financing of investment, came from the public sector. The second paper, Public Spending as an Engine of Growth and Equality: Lessons from World War II, looks at the macroeconomic side of the war mobilization.

Among the key points we make here are that potential output is much more elastic in response to demand than we usually assume; that both the labor force and productivity respond strongly to the level of spending; that the inflation associated with rapid growth often is a sign of temporary shortfalls or bottlenecks, which can be addressed in better ways than simply reducing aggregate spending; and that strong demand is a powerful force for equalizing the distribution of income. The lessons for the present are clear:

The wartime experience suggests that the chronic weak demand the US has suffered from for at least the past decade is even more costly than we had realized. Not only does inadequate spending lead to slower growth, it leads to lower wage gains particularly for those at the bottom and reinforces hierarchies of race and sex. Conversely, a massive public investment program in decarbonization or public health would not only directly address those crises, but could also be an important step toward reversing the concentration of income and wealth that is one of the great failures of economic policymaking over the past generation.

I also discuss the war experience in this earlier Dissent review of Mark Wilson’s book Destructive Creation, and in a talk I delivered at the University of Massachusetts in early 2020.

Alternative approaches to inflation control isn’t something I’ve written a lot about — until recently, the question hasn’t seemed very urgent. But Mike, me and our Roosevelt colleague Lauren Melodia did write a blog post last month about why it’s a mistake to worry about somewhat higher inflation numbers this year. One aspect of this is the “base effect” which is artificially increasing measured inflation, but it’s also important to stress that genuinely higher inflation is both a predictable result of a rapid recovery from the pandemic and not necessarily a bad thing.

A few years ago, Mike and I wrote a paper arguing for a broader toolkit at the Fed. Our focus at the time was on finding more ways to boost demand. But many of the arguments also apply to a situation — which we are definitely not in today, but may be at some point — where you’d want to rein demand in. Whichever way the Fed is pushing, it would be better to have more than one tool to push with.

Another important background debate for the Times piece is the idea of secular stagnation, which enjoyed a brief vogue in the mid 2010s. Unfortunately, the most visible proponent of this idea was Larry Summers, who … well, let’s not get into that here. But despite its dubious provenance, there’s a lot to be said for the idea that recent decades have seen a persistent tendency for total spending to fall short of the economy’s productive potential. In this (somewhat wonkish) blog post, I discussed this idea in terms of Roy Harrod’s model of economic growth, and suggested a number of factors that might be at work:

for secular, long-term trends tending to raise desired saving relative to desired investment we have: (1) the progressive satiation of consumption demand; (2) slowing population growth; (3) increasing monopoly power; and (4) the end of the industrialization process. Factors that might either raise or lower desired savings relative to investment are: (5) changes in the profit share; (6) changes in the fraction of profits retained in the business sector; (7) changes in the distribution of income; (8) changes in net exports; (9) changes in government deficits; and (10) changes in the physical longevity of capital goods. Finally, there are factors that will tend to raise desired investment relative to desired saving. The include: (11) consumption as status competition (this may offset or even reverse the effect of greater inequality on consumption); (12) social protections (public pensions, etc.) that reduce the need for precautionary and lifecycle saving; (13) easier access to credit, for consumption and/or investment; and (14) major technological changes that render existing capital goods obsolete, increasing the effective depreciation rate. These final four factors will offset any tendency toward secular stagnation.

Hysteresis — the effect of demand conditions on potential output — and secular stagnation are two important considerations that suggest that big boost in spending, as we are looking at now, could permanently raise the economy’s growth path. A third, less discussed consideration is that demand itself may be persistent. I discuss that possibility in a recent blog post.

An important aspect of an economic boom which we unfortunately could not fit into the op-ed is the way that faster growth and moderately higher inflation reduce the burden of debt for both the private and public sector. Historically, growth rates, inflation and interest rates have had a bigger effect on the household debt ratio than household borrowing has. This is a major focus of my scholarly work — see here and here. The same thing goes for public debt, as I’ve discussed in a blog post here. The degree to which both the past year’s stimulus and a possible future boom has/will strengthen balance sheets across the economy is seriously underappreciated, in my view.

The question of public debt has moved away from center stage recently. Criticism of public spending lately seems more focused on inflation and supposed ”labor supply constraints.” But if the anti-boom contingent shifts back toward scare stories about public debt, I’ve got pre-rebuttals written here and here.

For the broader economic perspective I’m coming from, I haven’t done a better job laying it out than this interview with the Current Affairs podcast. The ostensible topic is Modern Monetary Theory, but it’s really a general conversation about how we should think about the economy. You could also look at the teaching materials on this website. On the more concrete debates about economic potential and the limits to public spending, Arjun Jayadev and I have written a couple of stock-taking pieces: Strange Defeat: How Austerity Economics Lost All the Intellectual Battles and Still Won the War, and more recently The Crash of Austerity Economics.

Finally, I want to highlight something I wrote about a year ago: The Coronavirus Recession Is Just Beginning. There, I argued that the exceptional reduction in activity due to the pandemic would probably be followed by a conventional recession. You will note that this is more or less the opposite of the argument in the Times piece. That’s because my post least year was wrong! But I don’t think it was unreasonable to make that prediction at the time. What I didn’t take into account, what almost no one took into account, was the extraordinary scale of the stimulus over the past year. Well ok! Now, let’s build on that.

Video: The Macro Case for the Green New Deal

(Earlier this week, I gave a virtual presentation at an event organized by the Roosevelt Institute and the Green New Deal Network. Virtual events are inferior to live ones in many, many ways. But one way they are better, is that they are necessarily on video, and can be shared. Anyway, here is 25 minutes on why the economic situation calls for even more spending than the (surprisingly ambitious) proposals from the Biden administration, and also on why full employment shouldn’t be seen as an alternative to social justice and equity goals but as the best way of advancing them.)

A Few Followup Links

The previous post got quite a bit of attention — more, I think, than anything I’ve written on this blog in the dozen years I’ve been doing it.

I would like to do a followup post replying to some of the comments and criticisms, but I haven’t had time and realistically may not any time soon, or ever. In the meantime, though, here is some existing content that might be relevant to people who would like to see the arguments in that post drawn out more fully.

Here is a podcast interview I did with some folks from Current Affairs a month or so ago. The ostensible topic is Modern Mone(tar)y Theory, but the conversation gave me space to talk more broadly about how to think about macroeconomic questions.

A pair of Roosevelt reports (cowritten with Andrew Bossie) on economic policy during World War II are an effort to find relevant lessons for the present moment: The Public Role in Economic Transformation: Lessons from World War II, Public Spending as an Engine of Growth and Equality: Lessons from World War II

Here is a piece I wrote a couple years ago on Macroeconomic Lessons from the Past Decade. Bidenomics could be seen as a sort of deferred learning of the lessons from the Great Recession. So even though this was written before the pandemic and the election, there’s a lot of overlap here.

This report from Roosevelt, What Recovery? is an earlier stab at learning those lessons. I hope to be revisiting a lot of the topics here (and doing a better job with them, hopefully) in a new Roosevelt report that should be out in a couple of months.

If you like podcast interviews, here’s one I did with David Beckworth of Macro Musings following the What Recovery report, where we talked quite a bit about hysteresis and the limits of monetary policy, among other topics.

And here are some relevant previous past posts on this blog:

In The American Prospect: The Collapse of Austerity Economics

A Baker’s Dozen of Reasons Not to Worry about Government Debt

Good News on the Economy, Bad News on Economic Policy

A Demystifying Decade for Economics

A Harrodian Perspective on Secular Stagnation

Secular Stagnation, Progress in Economics

Announcement: Money and Things

Arjun Jayadev and I are writing a book. The working title is Money and Things: How Finance Shapes the World. Here’s what it’s about:

Money is one of our most ubiquitous social technologies. It is also one of the most misunderstood. Economics students in college are taught that money is just a convenience to avoid the clumsiness of barter – that prices and incomes depend on underlying “real” values, and money is just a veil. Academic economists insist that money is “neutral” – that the long-run development of the economy depends on “real” factors like population growth and technological progress, which have nothing to do with money or credit. Many people still have some vague notion that money is backed by something “real”, perhaps vaults of gold under Fort Knox, while those who do understand that money is nothing but an entry on bank ledger, often feel this is dangerous and unnatural, and demand that a sharp line be drawn between credit and money. For the vast majority of people money is simply the background hum of the world they live in, something that they pay attention to only occasionally, if perhaps with a sense of unease.

This book seeks to open up the world of money as it really is and its relationship to the world. Dawing on the work of Karl Marx, John Maynard Keynes, Hyman Minsky, and other “heterodox” economic thinkers, the book argues that there is no real economy behind the monetary one. In economic questions, money itself is what is real.

This claim is developed through two related arguments. First, that money and finance are autonomous — that changes in money flows, assets and debt do not just reflect underlying activities of production and consumption but have their own independent dynamics. And second, that money does not merely facilitate economic activity, but reshapes it in far-reaching ways. This is a challenge to the conventional wisdom that money payments and quantities offer a transparent window onto the concrete, material world – that a certain amount of money must correspond to an equivalent amount of stuff. And it is a challenge to the economics orthodoxy that money is “neutral” in relation to the larger economy. On the contrary, monetary phenomena like debt and exchange rates have profound and lasting effects on the development of economies and the broader society.

The book is organized in three sections, moving from the abstract to the concrete. The first section explores the rules and logic of money as a distinct social activity, starting with the most basic building blocks of economic units and payments and building up to balance sheets, interest, exchange rates, and other more complex features of money-world. It then explores how these money terms do — and don’t — match up to the material and social world around us, critically examining concepts like “real” GDP. While numbers like this are often thought of as measuring some physical quantity, this is logically incohenerent and practically misleading.

In the second section, the book turns to the institutions that operate at the interface between money-world and society. This section explores the links between money and society, the tensions and conflicts between them, and the ways that they are actively managed. It includes chapters on the politically contested questions of reforms to the monetary system, and the sustainibility of private and public debt. The section’s main focus is on central banks and corporations as two key actors that manage the tension between an economic world imagined purely in terms of money claims and payments, and the concrete human activities of production and reproduction.

In the final section, the book explores how the tension between society and the world of money plays out politically. With chapters on Europe in the wake of the euro crisis, the US, the developing world, and the problem of climate change, it shows how many political developments can be understood in terms of a fundamental conflict between enforcing the logic of money, on the one hand, and meeting the concrete needs of human societies on the other. Much of what is called neoliberalism can be seen as an effort to compel politics and society to conform to the logic of money. At the same time, these constraints provoke counter responses, and the institutions constructed to maintain the dominance of money can themselves become vehicles for collective action toward other ends.

The book is an attempt to build a more sustained argument out of various things Arjun and I have written, especially this and this. It will also incorporate material from a great many posts on this blog over the past decade, including these and these and these.

If all goes according to plan, the book will be out from University from Chicago Press in early 2022.

Video: Monetary Policy since the Crisis

On May 30, I did a “webinar” with INET’s Young Scholar’s Intiative. The subject was central banking since the financial crisis of a decade ago, and how it forces us to rethink some long-held ideas about money and the real economy — the dstinction between a demand-determined short run and a supply-determined long run; the neutrality of money in the long run; the absence of tradeoffs between unemployment, inflation and other macroeconomic goals; the reduction of monetary policy choices to setting a single overnight interest rate based on a fixed rule.My argument is that the crisis — or more precisely, central banks’ response to it — creates deep problems for all these ideas.

The full video (about an hour and 15 minus, including Q&A) is on YouTube, and embedded below. It’s part of an ongoing series of YSI webinars on endogenous money, including ones by Daniela Gabor, Jo Mitchella nd Sheila Dow. I encourage you, if you’re interested, to sign up with YSI — anyone can join — and check them out.

I didn’t use slides, but you can read my notes for the talk, if you want to.

Some Interviews

One new one, and two older ones I should have posted here a while ago.

The new one is with Seth Ackerman at Jacobin. Its starting point is a new article (co-authored with Arjun Jayadev and Enno Schroeder) I have coming out in Development and Change. But it’s also a continuation of the argument I made in my earlier Jacobin piece on the socialization of finance [*], and in my talk at this year’s Left Forum. (I still hope to get a transcript of that one at some point.)

The older two are both in response to my “What Recovery?” report for the Roosevelt Institute. This one, with David Beckworth at the Mercatus Institute, was a wide-ranging conversation that touched on a lot of topics beside the immediate question of whether we should regard the US economy as having reached full employment or potential output. This one, with Joe Weisenthal and his colleagues at “What Did You Miss” on Bloomberg, was much briefer but still managed to cover a lot of ground.

Supposedly there’s also an interview with me coming out in Der Standard, an Austrian newspaper, but I’m not sure when it will appear.

If you’re reading this blog, you’ll probably find these interviews interesting.

[*] Incidentally, my preferred title was that: The Socialization of Finance. I understand why the editors changed it to the catchier imperative form, but what I liked about my original was that it could refer both to something done to finance, and something done by finance.

At Dissent: A Cautious Case for Economic Nationalism

I have an article in the new issue of Dissent, arguing that “As long as democratic politics operates through nation-states, any left program will require some degree of delinking from the global economy.”

My piece is part of a special section on “Capitalism Today.” There will be an accompanying event at the New School on May 22, with Jamie Galbraith, Julia Ott, Mark Levinson and me.

I’ve made similar arguments to this article’s in a number of posts on this blog:

Capital Mobility as Trojan Horse
Only the Debt Is National
How to Think about the Balance of Payments
What Is Foreign Investment For?
Lessons from the Greek Crisis
Prices and the European Crisis, Continued

One thing that’s probably not as clear as it should be in the Dissent piece, is that the case for delinking is much stronger for most other countries than for the United States. For most countries, free trade and, even more, free capital mobility, drastically reduce the choices available to national governments. (This “disciplining” of the state by foreign investment is sometimes acknowledged as its real function.) For the US, I don’t think this is true – I don’t think the threat of capital flight meaningfully constrains policy here. And in particular I don’t think it makes sense to see a more positive trade balance as necessary or even particularly desirable to boost demand, for reasons laid out here and here.

Piketty Post at Crooked Timber

Crooked Timber is having a book event on Piketty’s Capital in the 21st Century. My contribution is here. A few supplemental bits:

First, I need to point out a problem in my post. I write: “It’s striking, for instance, that the book does not contain a table or figure comparing r and g historically.” But of course, as David Rosnick points out in email, this is not true. There are three figures in chapter 10 that purport to give historical values for r and g. The inadequacy of these figures to bear the weight put on the r > g apparatus is, I think, evident. Why are there no cross-country comparisons? Why the odd periodizations? Why so much emphasis on the data-free values invented for the distant past and future? Perhaps most damningly, what about the fact that r > g is no more true in the increasingly unequal second half of the 20th century than in the increasingly equal first half? But none of that changes the fact that my sentence, as I wrote it, is wrong.

Some people may be interested in other things I’ve written relating to Piketty on this blog over the past couple years:

A Quick Point on Models

Posts in Three Lines

Piketty and the Money View: A Reply to MisterMR

Piketty and the Money View

Wealth Distribution and the Puzzle of Germany

Mehrling on Black on Capital

Three Ways of Looking at alpha = r k

With respect to the Crooked Timber piece, I should say — should have acknowledged in the post itself — that it all comes out of conversations I’ve been having with Suresh Naidu over the past year or so. Suresh himself has written various things about Piketty; he’s working on a piece now on these same themes of capital, Piketty and the money view that should move the conversation significantly forward.

I should also have pointed out the Real World Economic Review’s superb special issue on Piketty. Jamie Galbraith’s, Merijn Knibbe’s, and Yanis Varoufakis’ contributions made many of the same points I tried to make in the Crooked Timber post. Knibbe’s piece in particular is a tour de force, everyone interested in these debates should read it.

Finally, I should say: I’ve been reading Crooked Timber since it began, in 2003. For a long while I was a regular commenter there, most of that time pseudonymously as Lemuel Pitkin. Now twelve years is a long time in internet time. Not so long in real life but still long enough for me to go back to graduate school, get my PhD and various teaching jobs, and to start this blog. Crooked Timber was probably my main inspiration to try to write in this format. So I can’t deny it, I’m thrilled to finally have a post up there.

On Other Blogs, Other Wonders

Some links for Nov. 1:

A few links

This Friday, November 6, Mike Konczal and I will be releasing the next piece of the Roosevelt Institute Financialization Project, two reports on “short-termism” in American corporations and financial markets. One report, written by me, is a followup to the Disgorge the Cash report from this spring, addressing a bunch of the most common objections to the argument that pressure for high payouts is undermining investment. (Some of this material has appeared here on the blog, but a lot of it is new.) The other report is a ten-point policy proposal for addressing short-termism, written by Mike, me, and my former student Amanda Page-Hongrajook. There will be an event for the release in DC, featuring Senator Tammy Baldwin. Hopefully it will get some attention from policymakers and the press.

I was pleased to see this new paper from the central bank of Norway, which draws on my work with Arjun Jayadev on debt dynamics. The key point in the Norges Bank paper is that we have to think of debt as evolving historically, not chosen de novo in response to the current “fundamentals.” More concretely: given significant debt inherited from the past, an increase in interest rates will lead to higher, not lower, debt. The shorthand that change in debt is the same as new borrowing, is not a reliable guide to the historical evolution of leverage.

From the paper:

Macroeconomic models typically assume that households refinance their debt each period … with the implication that the entire stock of debt responds swiftly to shocks and policy changes. This simplifying assumption might be useful and innocuous for many purposes, but cannot be relied upon in the current policy debate, where a central question regards if and how monetary policy should respond to movements in household debt. The likely performance of such policies can only be evaluated within frameworks that realistically account for debt dynamics. …

The evidence that perhaps most convincingly points toward the need for distinguishing between new borrowing and existing debt, is the empirical decomposition of US household debt dynamics by Mason and Jayadev (2014). They account for how the “Fisher” factors inflation, income growth and interest rates have contributed to the evolution of US debt-to-income, in addition to the changes in borrowing and lending, since 1929. Their findings clearly show how the dynamics of debt-to-income cannot be attributed to variation in borrowing alone, but has been strongly influenced by the Fisher factors, and often has gone in the opposite direction of households’ primary deficits. …

Discussions of household debt tend to implicitly assume that variation in debt-to- income ratios reflect active shifts in borrowing and lending, which is misguided…. With plausible debt dynamics, interest rate changes have far weaker influence on household debt than a conventional one-quarter debt model implies. Moreover, with long-term debt the qualitative effect of a policy tightening on household debt-to-GDP is likely to be positive..

The bulk of the paper is an attempt to incorporate these ideas into a DSGE model, which I have misgivings about. But that hardly matters since they’ve so clearly grasped the important point.

In the other-than-economics department, here’s a New York Observer article by Will Boisvert from a little while back on universal pre-K. Will is not a big fan of New York’s universal pre-K program, or of the education-based arguments used to promote it. Now, as a New York City parent of a small child, I’m very grateful that UPK exists. And I’m very impressed that the DeBlasio team were able to roll it out as fast as they did — it’s hard to think of another universal entitlement that was implemented so quickly. But Will’s central critique seems on the mark to me. UPK is primarily a benefit for parents — we should mainly think of it as publicly funded daycare. But for various reasons, it’s been sold by its contribution to the human capital formation of 4-year olds, not by the ways it makes parenthood less of a burden for working- and middle-class families. Will’s argument — and here I’m not sure I’m with him — is that this has had real costs in the way the program is structured.

(Incidentally, one of my first published pieces was a rather unfriendly article about current Observer editor Ken Kurson.)

Over at the Angry Bear blog, the very smart Robert Waldmann has got himself worked up over the fact that real private investment has for the first times since 1947 surpassed real government consumption and investment (I > G in the language of the national income identity.) Unfortunately, there is no such fact.

“Real” I and G are index numbers; you cannot compare their magnitudes. All you can compare is dollars. And in terms of dollars, government consumption and investment, at $3.2 trillion, remains slightly higher than private domestic investment, at $3 trillion. In fact, Waldmann’s claim is almsot the opposite of the truth: the current expansion is the first one since the early 1970s in which private investment has not passed government final spending, at least not yet.

“Real” values are supposed to refer to quantities of stuff, not quantities of money. So Waldmann’s claim that real I is greater than real G is equivalent to the claim that the country is producing more kindergarten classes than steel. Talking about the change in the “real” quantity of steel, or in the “real” number of kindergarten classes, is in principle straightforward: just add up tons or bodies in classrooms, as the case may be. But how do you compare the two? Only via their prices. The problem is, the relative price of kindergarten classes and steel varies over time. So which is greater than which, and by how much, will depend on which year’s prices you use. In the case of I and G, if we use current prices, we find that G is slightly greater than I. If we use 2009 prices, as Waldmann does, we find that I is slightly greater than G. If we use, say, 1950 prices, we find that I is almost three times G. Which of these is “true”? None of them — when you’re comparing index numbers, absolute magnitudes are completely arbitrary. And again, when we compare dollar amounts, which are objective, we see that G remains comfortably above I. [1]

I’m not calling attention to this just to pick a fight. (UPDATE: Waldmann now agrees, so no fight to pick.) It’s because I think it’s revealing about the way inflation adjustment confuses people, and especially economists. Even someone as smart and critical-minded as Waldmann can get sucked into treating “real” values as objective measures of physical stuff.

I haven’t been following the Argentine elections closely, but it seems clear that the resolution of the Argentine default is an important frontline in the war between money and humanity. So we have to be interested in whether the elections are won by the candidate promising surrender to the creditors. On the larger set of issues at stake there, I recommend this piece by Marc Weisbrot, whose stuff on Argentina is in general very good.

There’s an interesting conversation going on about the “natural rate of interest.” Here’s one way to think about it. If the government buys enough peanuts, it can presumably raise aggregate demand to the economy to full employment, and/or to a level consistent with some inflation target. Should we call whatever peanut price results from this policy “the natural price of peanuts”? And is there any reason to think that this price, whatever it might be, will be the same as in a Walrasian economy that somehow corresponds to our own “in the absence of distortions or rigidities”? Now substitute bonds for peanuts — to talk about the natural rate of interest means answering both questions Yes.

Anyway, I think Tyler Cowen is mostly on target here.

I was talking about econ blogs at the bar the other night, and there was a general consensus that none of us read as many of them as we used to. Maybe the econblogging moment is over? Still, there are lots of them that are worth your time, if you’re reading this. Here are a few economics blogs I’ve recently started reading regularly: Perry Mehrling; Brian Romanchuk; Marshall Steinbaum. Perry has of course been writing great stuff for decades but he’s only recently taken up blogging. So I think there’s still some life in the format.

[1] Altho it is striking how the trajectory of G has flattened out under Obama. 2010-2015 is the first five-year period since World War II in which there was zero growth in nominal government consumption and investment. The only reason G is still above I, is because private investment fell so steeply between 2006 and 2010. So maybe Waldmann is onto something after all?