monetary policy – Page 3

The King’s Two Bodies

This looks like a good book:

Private outposts in the state and public outposts in finance, central banks have historically moved back and forth between very different institutional forms: private, public and various combinations of the two. Far from constituting a rational-functionalist formation, they have performed widely diverse and often barely related functions—from the administration of state debt to the issuing of currency and the supervision of private banks—cobbled together more or less ad hoc according to political expediency… Central banks, Vogl argues, constitute a fourth power, overshadowing legislature, executive and judiciary, and integrating financial-market mechanisms into the practice of government.

Central banks’ claim to autonomous authority is based on their assumed, and asserted, technical competence. As they and their aficionados in the media and in economics departments are fond of telling us, central bankers know things about the economy that normal people, inevitably overwhelmed by such complexity, cannot even begin to fathom. … Central bankers themselves have always been aware … that what they sell to the public as a quasi-natural science is in fact nothing more than intuitive empathy, an ability acquired by long having moved in the right circles to sense how capital will feel, good or bad, about what a government is planning to do in relation to financial markets. (Economic theory is best understood as an ontological reification of capitalist sensitivities represented as natural laws of a construct called ‘the economy’.) At critical moments, such as when the Bank of England went off the gold standard in 1931 …, central banking relies on the trained intuition of great men and their capacity to make others believe that they know what they’re doing, even when they don’t. At a university event in London almost a decade after the 2008 crash, Alan Greenspan was remembered by an enthusiastic admirer as having had ‘a complete model of the American economy in his body’.

The Class Struggle on Wall Street: A Footnote

Remember back at the beginning of February when the stock markets were all crashing? Feels like ages ago now, I know. Anyway, Seth Ackerman and I had an interesting conversation about it over at Jacobin.

My rather boring view is that short-term movements in stock markets can’t be explained by any kind of objective factors, because in the short run prices are dominated by conventional expectations — investors’ beliefs about investors’ beliefs… [1] But over longer periods, the value of shares is going to depend on the fraction of output claimed as profits and that, in general, is going to move inversely with the share claimed as wages. So if working people are getting raises — and they are, at least more than they were in 2010-2014 — then shareholders are right to worry about their own claim on the product.

One thing I say in the interview that a couple people have been surprised at, is that

there has been an upturn in business investment. In the corporate sector, at least, business investment, after being very weak for a number of years, is now near the high end of its historical range as a fraction of output.

Really, near the high end? Isn’t investment supposed to be weak?

As with a lot of things, whether investment is weak or strong depends on exactly what you measure. The figure below shows investment as a share of total output for the economy as a whole and for the nonfinancial corporate sector since 1960. The dotted lines show the 10th and 90th percentiles.

Gross capital formation as a percent of output

As you can see, while invesment for the economy as a whole is near the low end of its historic range, nonfinancial corporate investment is indeed near the high end.

What explains the difference? First, investment by households collapsed during the recession and has not significantly recovered since. This includes purchases of new houses but also improvements of owner-occupied houses, and brokers’ fees and other transactions costs of home sales (that last item accounts for as much as a quarter of residential investment historically; many people don’t realize it’s counted at all). Second, the investment rate of noncorporate businesses is about half what it was in the 1970s and 80s. This second factor is exacerbated by the increased weight of noncorporate businesses relative to corproate businesses over the past 20 years. I’m not sure what concrete developments are being described by these last two changes, but mechanically, they explain a big part of the divergence in the figure above. Finally, the secular increase in the share of output produced by the public sector obviously implies a decline in the share of private investment in GDP.

I think that for the issues Seth and I were talking about, the corporate sector is the most relevant. It’s only there that we can more or less directly observe quantities corresponding to our concepts of “the economy.” In the public (and nonprofit) sector we can’t observe output, in the noncorproate sector we can’t observe profits and wages (they’re mixed up in proprietors income), and in the household sector we can’t observe either. And financial sector has its own issues.

Anyway, you should read the interview, it’s much more interesting than this digression. I just thought it was worth explaining that one line, which otherwise might provoke doubts.

[1] While this is a truism, it’s worth thinking through under what conditions this kind of random walk behavior applies. The asset needs to be and liquid and long-lived relative to the relevant investment horizon, and price changes over the investment horizon have to be much larger than income or holding costs. An asset that is normally held to maturity is never going to have these sort of price dynamics.

Five, Ten or Even Thirty Years

Neel Kashkari is clearly a very smart guy. He’s been an invaluable voice for sanity at the Fed these past few years. Doesn’t he see that something has gone very wrong here?

Kashkari:

When people borrow money to buy a house, or businesses take out a loan to build a new factory, they don’t really care about overnight interest rates. They care about what interest rates will be for the term of their loan: 5, 10 or even 30 years. [*] Similarly, when banks make loans to households and businesses, they also try to assess where interest rates will be over the length of the loan when they set the terms. Hence, expectations about future interest rates are enormously important to the economy. When the Fed wants to stimulate more economic activity, we do that by trying to lower the expected future path of interest rates. When we want to tap the brakes, we try to raise the expected future path of interest rates.

Here’s the problem: recession don’t last 5, 10 or even 30 years. Per the NBER, they last a year to 18 months.

Mainstream theory says we have a long run dictated by supply side — technology, demographics, etc. On average the output gap is zero, or at least, it’s at a stable level. On top of this are demand disturbances or shocks — changes in desired spending — which produce the businesses cycle, alternating periods of high unemployment and normal growth or rising inflation. The job of monetary policy is to smooth out these short-term fluctuations in demand; it absolves itself of responsibility for the longer-run growth path.

If policy responding to demand shortfalls lasting a year or two, how is that supposed to work if policy shifts have to be maintained for 5, 10 or even 30 years to be effective?

If the Fed is faced with rising inflation in 2005, is it supposed to respond by committing itself to keeping rates high even in 2010, when the economy is sliding into depression? Does anyone think that would have been a good idea? (I seriously doubt Kashkari thinks so.) And if it had made such a commitment in 2005, would anyone have worried about breaking it in 2010? But if the Fed can’t or shouldn’t make such a commitment, how is this vision of monetary policy supposed to work?

If monetary policy is only effective when sustained for 5, 10 or even 30 years, then monetary policy is not a suitable tool for managing the business cycle. Milton Friedman pointed this out long ago: It is impossible for countercyclical monetary policy to work unless the lags with which it takes effect are decidedly shorter than the frequency of the shocks it is supposed to respond to. The best you can do, in his view, is maintain a stable money supply growth that will ensure stable inflation over the long run.

Meanwhile, conventional monetary policy rules like the Taylor rule are defined based on current macroeconomic conditions — today’s inflation rate, today’s output gap, today’s unemployment rate. There’s no term in there for commitments the Fed made at some point in the past. The Taylor rule seems to describe the past two or three decades of monetary policy pretty well. Now, Kashkari says the Fed can influence real activity only insofar as it is setting policy over the next 5, 10 or even 30 year’s based on today’s conditions. But what the Fed actually will do, if the Taylor rule continues to be a reasonable guide, is to set monetary policy based on conditions over the next 5, 10 or even 30 years. So if Kashkari takes his argument seriously, he must believe that monetary policy as it is currently practiced is not effective at all.

In the abstract, we can imagine some kind of rule that sets policy today as some kind of weighted average of commitments made over the past 5, 10 or even 30 years. Of course neither economic theory nor official statements describe policy this way. Still, in the abstract, we can imagine it. But in practice? FOMC members come and go; Kashkari is there now, he’ll be gone next year. The chair and most members are appointed by presidents, who also come and go, sometimes in unpredictable ways. Whatever Kashkari thinks is the appropriate policy for 2022, 2027 or 2047, it’s highly unlikely he’ll be there to carry it out. Suppose that in 2019 Fed chair Kevin Warsh looks at the state of the economy and says, “I think the most appropriate policy rate today is 4 percent”. Is it remotely plausible that that sentence continues “… but my predecessor made a commitment to keep rates low so I will vote for 2 percent instead”? If that’s the reed the Fed’s power over real activity rests on it, it’s an exceedingly thin one. Even leaving aside changes of personnel, the Fed has no institutional capacity to make commitments about future policy. Future FOMC members will make their choices based on their own preferred models of the economy plus the data on the state of the economy at the time. If monetary policy only works through expectations of policy 5, 10 or even 30 years from now, then monetary policy just doesn’t work.

There are a few ways you can respond to this.

One is to accept Kashkari’s premise — monetary policy is only effective if sustained over many years — and follow it to its logical conclusion: monetary policy is not useful for stabilizing demand over the business cycle. Two possible next steps: Friedman’s, which concludes that stabilizing demand at business cycle frequencies is not a realistic goal for policy, and the central bank should focus on the long-term price level; and Abba Lerner’s, which concludes that business cycles should be dealt with by fiscal policy instead.

The second response is to start from the fact — actual or assumed — that monetary policy is effective at smoothing out the business cycle, in which case Kashkari’s premise must be wrong. Evidently the effect of monetary policy on activity today does not depend on beliefs about what policy will be 5, 10 or even 30 years from now. This is not a hard case to make. We just have to remember that there is not “an” interest rate, but lots of different credit markets, with rationing as well as prices, with different institutions making different loans to different borrowers. Policy is effective because it targets some particular financial bottleneck. Perhaps stocks or inventories are typically financed short-term and changes in their financing conditions are also disproportionately likely to affect real activity; perhaps mortgage rates, for institutional reasons, are more closely linked to the policy rate than you would expect from “rational” lenders; perhaps banks become more careful in their lending standards as the policy rate rises. One way or another, these stories depend on widespread liquidity constraints and the lack of arbitrage between key markets. Generations of central bankers have told stories like these to explain the effectiveness of monetary policy. Remember Ben Bernanke? His article Inside the Black Box is a classic of this genre, and its starting point is precisely the inadequacy of Kashkari’s interest rate story to explain how monetary policy actually works. Somehow or other policy has to affect the volume of lending on a short timeframe than it can be expected to move long rates. Going back a bit further, the Fed’s leading economist of the 1950s, Richard Roosa, was vey clear that neither the direct effect of Fed policy shifts on longer rates, nor of interest rates on real activity, could be relied on. What mattered rather was the Fed’s ability to change the willingness of banks to make loans. This was the “availability doctrine” that guided monetary policy in the postwar years. [2] If you think monetary policy is generally an effective tool to moderate business cycles, you have to believe something like this.

Response three is to accept Kashkari’s premise, yet also to believe that monetary works. This means you need to adjust your view of what policy is supposed to be doing. Policy that has to be sustained for 5, 10 or even 30 years to be effective, is no good for responding to demand shortfalls that last only a year or two at most. It looks better if you think that demand may be lacking for longer periods, or indefinitely. If shifts in demand are permanent, it’s not such a problem that to be effective policy shifts must also be permanent, or close to it. And the inability to make commitments is less of a problem in this case; now if demand is weak today, theres a good chance it will be weak in 5, 10 or even 30 years too; so policy will be persistent even if it’s only based on current conditions. Obviously this is inconsistent with an idea that aggregate demand inevitably gravitates toward aggregate supply, but that’s ok. It might indeed be the case that demand deficiencies an persist indefinitely, requiring an indefinite maintenance of lower rates. There’s a good case that something like this response was Keynes’ view. [3] But while this idea isn’t crazy, it’s certainly not how central banks normally describe what they’re doing. And Kashkari’s post doesn’t present itself as a radical reformulation of monetary policy’s goals, or mention secular stagnation or anything like that.

I don’t know which if any of these responses Kashkari would agree with. I suppose it’s possible he sincerely believes that policy is only effective when sustained for 5, 10 or even 30 years, and simply hasn’t noticed that this is inconsistent with a mission of stabilizing demand over business cycles that turn much more quickly. Given what I’ve read of his I feel this is unlikely. It also seems unlikely that he really thinks you can understand monetary policy while abstracting from banks, finance, credit and, well, money — that you can think of it purely in terms of an intertemporal “interest rate,” goods today vs goods tomorrow, which the central bank can somehow set despite controlling neither preferences nor production possibilities. My guess: When he goes to make concrete policy, it’s on the basis of some version of my response two, an awareness that policy operates through the concrete financial structures that theory abstracts from. And my guess is he wrote this post the way he did because he thought the audience he’s writing for would be more comfortable with a discussion of the expectations of abstract agents, than with a discussion of the concrete financial structures through which monetary policy is transmitted. It doesn’t hurt that the former is much simpler.

Who knows, I’m not a mind reader. But it doesn’t really matter. Whether the most progressive member of the FOMC has forgotten everything his predecessors knew about the transmission of monetary policy, or whether he merely assumes his audience has, the implications are about the same. “The Fed sets the interest rate” is not the right starting point for thinking about monetary policy manages aggregate demand.

[1] This is a weird statement, and seems clearly wrong. My wife and I just bought a house, and I can assure you we were not thinking at all about what interest rates would be many years from now. Why would we? — our monthly payments are fixed in the contract, regardless of what happens to rates down the road. Allowing the buyer to not care about future interest rates is pretty much the whole point of the 30-year fixed rate mortgage. Now it is true that we did care, a little, about interest rates next year (not in 5 years). But this was in the opposite way that Kashkari suggests — today’s low rates are more of an inducement to buy precisely if they will not be sustained, i.e. if they are not informative about future rates.

I think what may be going on here is a slippage between long rates — which the borrower does care about — and expected short rates over the length of the loan. In any case we can let it go because Kashkari’s argument does work in principle for lenders.

[2] Thanks to Nathan Tankus for pointing this article out to me.

[3] Leijonhufvud as usual puts it best:

Keynes looked forward to an indefinite period of, at best, unrelenting deflationary pressure and painted it in colors not many shades brighter than the gloomy hues of the stagnationist picture. But these stagnationist fears were based on propositions that must be stated in terms of time-derivatives. Modern economies, he believed, were such that, at a full employment rate of investment, the marginal efficiency of capital would always tend to fall more rapidly than the long rate of interest. … When he states that the long rate “may fluctuate for decades about a level which is chronically too high” one should … see this in the historical context of the “obstinate maintenance of misguided monetary policies” of which he steadily complained.

Links for July 17, 2017

The action is on the asset side. Arjun Jayadev, Amanda Page-Hoongrajok and I have a new version of our state-local balance sheets paper up at Washington Center for Equitable Growth. It’s moderately improved from the version posted here a few months ago. I’ll have a blogpost up in the next day or two laying out the arguments in more detail. In the meantime, here’s the abstract:

This paper … makes two related arguments about the historical evolution of state-local debt ratios over the past 60 years. First, there is no consistent relationship between state and local budget deficits and changes in state and local government debt ratios. In particular, the 1980s saw a shift in state and local budgets toward surplus but nonetheless saw rising debt ratios. This rise in debt is fully explained by a faster pace of asset accumulation as a result of increased pressure to prefund future expenses… Second, budget imbalances at the state level are almost entirely accommodated on the asset side – both in the aggregate and cross-sectionally, larger state-local deficits are mainly associated with reduced net asset accumulation rather than with greater credit-market borrowing. …

What recovery? One of the central questions of U.S. macroeconomic policy right now is whether the slow growth of output and employment over the past decade are the result of supply-side factors like demographics and an exhaustion of new technologies, or whether — despite low measured unemployment — we are still well short of potential output. Later this month, I’ll have a paper out from the Roosevelt Institute making the case for the latter — that there is still substantial space for more expansionary policy. Some of my argument is anticipated by this post from Simon Wren-Lewis, which briefly lays out several ways in which a demand shortfall can have lasting effects on the economy’s productive capacity — discouraged workers leaving the labor force; reduced investment by business; and slower technical progress, because a slack economy is less favorable for innovation. He concludes: “There is no absence of ideas about how a great recession and a slow recovery could have lasting effects. If there is a problem, it is more that this simple conceptualization” — textbook model in which demand has only short-run effects — “has too great a grip on the way many people think.”

Along the same lines, here is a nice post from Adam Ozimek on the “mystery” of low wage growth. The mystery is that despite low unemployment, annual wage growth (as measured by the Employment Costs Index) has remained relatively low – 2 to 2.5 percent, rather than the 3 to 3.5 percent we’d expect based on historical patterns. (Ozimek doesn’t mention it, but total compensation growth — including benefits — is even lower, less than one percent for the year ending March 2017.) But, he points out, this historical relationship is based on measured unemployment; if we use the employment-population ratio instead, then recent wage gains are exactly where you’d expect historically. So the behavior of wages is another piece of evidence that the official unemployment rate is underestimating the degree of labor market slack, and that the fall in the employment-population ratio reflects — at least in part — weak demand rather than the inevitable result of worse demographics (or better video games).

The bondholders’ view of the world. Matthew Klein has a very enjoyable post at FT Alphaville taking apart the claim (from three prominent academics) that “The French Revolution began with the bankruptcy of the ancient regime.” This is, of course, supposed to illustrate the broader dangers of allowing sovereigns to stiff bondholders. But in fact, as Klein points out, the old regime did not default on in its loans — Louis XVI went to great lengths to avoid bankruptcy, precisely because he was afraid of the reaction of creditors. Further: It was the monarchy’s efforts to avoid default — highly unpopular taxes and spending cuts, then the calling of the Estates General to legitimate them — that set in motion the events that led to the Revolution. So the actual history — in which a government was overthrown after choosing austerity over bankruptcy — has been reversed 180 degrees to fit the prevailing myth of our times: that good and bad political outcomes all depend on the grace of the bond markets. As Klein says, this might seem like a small mistake, but it is deeply revealing about how ideology operates: “ Whoever introduced it must have been working off what he thought was common knowledge that didn’t need to be checked. There is no citation.”

Klein’s piece is also, in passing, a nice response to that silly Jacob Levy post which argues that democracy and popular sovereignty are myths and that modern states have always been ruled by the bondholders. Levy offers zero evidence for this claim; his post is of interest only as a signpost for where elite discourse may be heading.

Don’t blame Germany. Here is a very useful paper from Enno Schroeder and Oliver Piceck estimating the effects of an increase in German demand on other European economies. They use an input-output model to estimate the effect of an increase in spending in Germany on output and employment in each of the other 10 largest euro-area countries. One of the things I really like about this is that it does not depend on either econometrics or on any kind of optimization; rather, it is simply based on the observable data of the distribution of consumption spending and of intermediate inputs by various industries over different industries and countries, along with the fraction of household income consumed in various countries. This lets them answer the question: If spending in Germany increased by a certain amount and the composition of spending otherwise remained unchanged, what would the effect be on total spending in various European countries? Yes, they ignore possible price changes; but I don’t think it’s any less reasonable than the conventional approach, which goes to the opposite extreme and assumes prices are everything. And even if you want to add a price story, this approach gives you a useful baseline to build on.

Methodology aside, their results are interesting and a bit surprising: They find that the spillovers from Germany to other European countries are surprisingly small.

Our main finding suggests that if Germany’s final demand were to exogenously increase by one percent of GDP, then France, Italy, Spain, and Portugal’s GDP would grow by around a 0.1 percent, their unemployment rates would be reduced by a bit over 0.1 points, and their trade balances would improve by approximately 0.04 points. The spillover effects on Greece are significantly smaller.

Given how much larger Germany is than most of these countries, and how tightly integrated European economies are understood to be, these are surprisingly small numbers. It seems that a large proportion of German demand still falls on domestic goods, while imports come largely from the euro area — particularly, in the case of intermediate goods, from the former Warsaw Pact countries. As a result, even

if a German demand boom were to materialize, France, Greece, Italy, Spain, and Portugal would not benefit much in terms of growth and external adjustment. The real beneficiaries would be small neighbors (e.g. Austria and Luxembourg) and emerging economies in Eastern Europe that are well integrated into German supply chains (e.g. Czech Republic and Poland).

Of course, this doesn’t mean that more expansionary policy in Germany isn’t desirable for other reasons. (For one thing, German workers badly need raises.) But for the balance of payments problems in Southern Europe, other solutions are needed.

Today’s conventional is yesterday’s unconventional, and vice versa. Here is a useful NBER paper from Mark Carlson and Burcu Duygan-Bump on the conduct of monetary policy in the 1920s. As they point out, much of today’s “unconventional” policy apparatus was standard at that point, including large purchases of a range of securities — quantitative easing avant le lettre. As I’ve written on this blog before (here and here and here) discussion of monetary policy is made needlessly confusing by economists’ habit of treating the policy instrument as having a direct, immediate link to macroeconomic outcomes, which can be derived from first principles. Whereas anyone who reads even a little history of central banking finds that the ultimate goal of control over the pace of credit expansion has been pursued by a wide range of instruments and intermediate targets in different settings.

Also on the mechanics of monetary policy, I liked these two posts from the New York Fed’s Liberty Street Economics blog. They do something which should be standard but isn’t — walk through step by step the balance sheet changes associated with various central bank policy shifts. In my experience, teaching monetary policy in terms of balance sheet changes is much more straightforward than with the supply-and-demand diagrams that are the basic analytic tool in most textbooks. The curves at best are metaphors; the balance sheets tell you what actually happens.

Posts in Three Lines

I haven’t been blogging much lately. I’ve been doing real work, some of which will be appearing soon. But if I were blogging, here are some of the posts I might write.

Lessons from the 1990s. I have a new paper coming out from the Roosevelt Institute, arguing that we’re not as close to potential as people at the Fed and elsewhere seem to believe, and as I’ve been talking with people about it, it’s become clear that your priors depend a lot on how you think of the rapid growth of the 1990s. If you think it was a technological one-off, with no value as precedent — a kind of macroeconomic Bush v. Gore — then you’re likely to see today’s low unemployment as reflecting an economy working at full capacity, despite the low employment-population ratio and very weak productivity growth. But if you think the mid-90s is a possible analogue to the situation facing policymakers today, then it seems relevant that the last sustained episode of 4 percent unemployment led not to inflation but to employers actively recruiting new entrants to the laborforce among students, poor people, even prisoners.

Inflation nutters. The Fed, of course, doesn’t agree: Undeterred by the complete disappearance of the statistical relationship between unemployment and inflation, they continue to see low unemployment as a threatening sign of incipient inflation (or something) that must be nipped in the bud. Whatever other effects rate increases may have, the historical evidence suggests that one definite consequence will be rising private and public debt ratios. Economists focus disproportionately on the behavioral effects of interest rate changes and ignore their effects on the existing debt stock because “thinking like an economist” means, among other things, thinking in terms of a world in which decisions are made once and for all, in response to “fundamentals” rather than to conditions inherited from the past.

An army with only a signal corps. What are those other effects, though? Arguments for doubting central bankers’ control over macroeconomic outcomes have only gotten stronger than they were in the 2000s, when they were already strong; at the same time, when the ECB says, “let the government of Spain borrow at 2 percent,” it carries only a little less force than the God of genesis. I think we exaggerate power of central banks over real economy, but underestimate their power over financial markets (with the corollary that economists — heterodox as much as mainstream — see finance and real activity as much more tightly linked than they are).

It’s easy to be happy if you’re heterodox. This spring I was at a conference up at the University of Massachusetts, the headwaters of American heterodox economics, where I did my Phd. Seeing all my old friends reminded me what good prospects we in the heterodox world have – literally everyone I know from grad school has a good job. If you are wondering whether your prospects would be better at a nowhere-ranked heterodox economics program like UMass or a top-ranked program in some other social science, let me assure you, it’s the former by a mile — and you’ll probably have better drinking buddies as well.

The euro is not the gold standard. One of the topics I was talking about at the UMass conference was the euro which, I’ve argued, was intended to create something like a new gold standard, a hard financial constraint on governments. But that that was the intention doesn’t mean its the reality — in practice the TARGET2 system means that national central banks don’t face any binding constraint , unlike under the gold standard the central bank is “outside” the national monetary membrane. In this sense the euro is structurally more like Keynes’ proposals at Bretton Woods, it’s just not Keynes running it.

Can jobs be guaranteed? In principle I’m very sympathetic to the widespread (at least among my friends on social media) calls for a job guarantee. It makes sense as a direction of travel, implying a commitment to a much lower unemployment rate, expanded public employment, organizing work to fit people’s capabilities rather than vice versa, and increasing the power of workers vis-a-vis employers. But I have a nagging doubt: A job is contingent by its nature – without the threat of unemployment, can there even be employment as we know it?

The wit and wisdom of Haavelmo. I was talking a while back about Merijn Knibbe’s articles on the disconnect between economic theory and the national accounts with my friend Enno, and he mentioned Trygve Haavelmo’s 1944 article on The Probability Approach in Econometrics, which I’ve finally gotten around to reading. One of the big points of this brilliant article is that economic variables, and the models they enter into, are meaningful only via the concrete practices through which the variables are measured. A bigger point is that we study economics in order to “become master of the happenings of real life”: You can contribute to economics in the course of advancing a political project, or making money in financial markets, or administering a government agency (Keynes did all three), but you will not contribute if you pursue economics as an end in itself.

Coney Island. Laura and I took the boy down to Coney Island a couple days ago, a lovely day, his first roller coaster ride, rambling on the beach, a Cyclones game. One of the wonderful things about Coney Island is how little it’s changed from a century ago — I was rereading Delmore Schwartz’s In Dreams Begin Responsibilities the other day, and the title story’s description of a young immigrant couple walking the boardwalk in 1909 could easily be set today — so it’s disconcerting to think that the boy will never take his grandchildren there. It will all be under water.

Rogoff on the Zero Lower Bound

I was at the ASSAs in Chicago this past weekend. [1] One of the most interesting panels I went to was this one, on Advances in Open Economy Macroeconomics. Among other big names, Ken Rogoff was there, as the discussant for a rather strange paper by Pierre-Olivier Gourinchas and Helene Rey.

The Gourinchas and Rey paper, like much of mainstream macro these days, made a big deal of how different everything is at the zero lower bound. Rogoff wasn’t having it. Here’s a rough transcript of what he said:

The obsession with the zero lower bound is encouraging all kinds of wacko ideas. People are saying that at the ZLB, productivity increases are bad (Eggertsson/Krugman/Summers), protectionism is good (Eichngreen), price flexibility is bad, and so on.

But there is an emerging literature that says economists are taking the zero lower bound too literally. In fact, getting negative rates is not that hard. So before you take seriously these, let’s say, very creative ideas, it would be simpler to think about getting rid of the zero bound.

There are lots of ways to do it. I talk about some in my book, but people already understood this back in the 1930s. There was Robert Eisler’s proposal to have banks accept cash deposits at a discount, for instance, which would have effectively created negative rates. If Keynes had read Eisler, he might have gone in a different direction. [2] It’s a very old idea — Kublai Khan did something similar. There will be pushback from the financial sector, of course, who think negative rates will be costly for them, but fundamentally it is not hard to do.

These rather striking comments crystallized something in my mind. What is the big deal about the ZLB? For mainstream macroeconomists, including Gourinchas and Rey in this paper, the reason the ZLB matters is that it prevents the central bank form setting an interest rate low enough to keep output at potential. [3] It’s precisely this that makes inapplicable the conventional analysis of a nonmonetary problem of allocating scarce resources between alternative ends, and requires thinking about other entry points. If the central bank can’t solve the problem of aggregate demand then you have to take it seriously, with all the wacko and/or creative stuff that follows.

In the dominant paradigm, this is a specific technical problem of getting interest rates below zero. Solve that, and we are back in the comfortable Walrasian world. But for those of us on the heterodox side, it is never the case that the central bank can reliably keep output at potential — maybe because market interest rates don’t respond to the policy rate, or because output doesn’t respond to interest rates, or because the central bank is pursuing other objectives, or because there is no well-defined level of “potential” to begin with. (Or, in reality, all four.) So what people like Gourinchas and Rey, or Paul Krugman, present as a special, temporary state of the economy, we see as the general case.

One way of looking at this is that the ZLB is a device to allow economists like Krugman and Gourinchas and Rey — who whatever their scholarly training, are aware of the concrete reality around them — to make Keynesian arguments without forfeiting their academic respectability. You can understand why someone like Rogoff sees that as cheating. We’ve spent decades teaching that the fundamental constraint on the economy is the real endowment of resources and technology; that saving boosts growth; that trade is always win-win; that money and finance matter only in the short run (and the short run is tolerably short). The practical problem of negative policy rates doesn’t let you forget all of that.

Which, if you turn it around, perhaps reflects well on the ZLB crowd. Maybe they want to forget all that? Maybe, you could say, they take the zero lower bound seriously because they don’t take it literally. That is, they treat it as a hard constraint precisely because they are aware that it is only a stand-in for a deeper reality.

[1] The big annual economics conference. It stands for Allied Social Sciences Association — the disciplinary imperialism is right there in the name.

[2] This was an odd thing for Rogoff to say, since of course while Keynes didn’t discuss Eisler as far as I know, he talks at length about the similar proposals for depreciating cash of Silvio Gesell and Major Douglas. Notoriously he says these “brave cranks and heretics” have more to offer than Marx.

[3] Gourinchas and Rey are reality-based enough to say “the policy rate,” not “the interest rate.”

EDIT: Added the seriously-but-not-literally phrasing as suggested by Steve Roth on Twitter.

Thoughts and Links for December 21, 2016

Aviation in the 21st century. I’m typing this sitting on a plane, en route to LA. The plane is a Boeing 737-800. The 737 is the best-selling commercial airliner on earth; reading its Wikipedia page should raise some serious doubts about the idea that we live in an era of accelerating technological change. I’m not sure how old the plane I’m sitting on is, but it could be 15 years; the 800-series was introduced in its present form in the late 1990s. With airplanes, unlike smartphones, a 20-year old machine is not dramatically — is not even noticeably — different from the latest version. The basic 737 model was first introduced in 1967. There have been upgrades since then, but to my far from expert eyes it’s striking how little changed tin 50 years. The original 737 carried 120 passengers, at speeds of 800 km/h on trips of up to 3,000 km, using 6 liters of fuel per kilometer; this model carries 160 passengers (it’s longer) at speeds of 840 km/h on trips of 5,500 km, using 5 liters of fuel per kilometer. Better, sure, but probably the main difference you’d actually notice from a flight 50 years ago is purely social: no smoking. In any case it’s pretty meager compared that with the change from 50 years earlier, when commercial air travel didn’t exist. The singularity is over; it happened on or about December 1910.

Unnatural rates. Here’s an interesting post on the New York Fed’s Liberty Street blog challenging the ideas of “natural rates” of interest and unemployment. good: These ideas, it seems to me, are among the biggest obstacles to thinking constructively about macroeconomic policy. Obviously it’s example of, well, naturalizing economic outcomes, and in particular it’s the key ideological element in presenting the planning by the central bank as simply reproducing the natural state of the economy. But more specifically, it’s one of the most important ways that economists paper over the disconnect between the the economic-theory world of rational exchange, and the real world of monetary production. Without the natural rate, it would be much hard to pretend that the sort of models academic economists develop at their day jobs, have any connection to the real-world problems the rest of the world expects economists to solve. Good to see, then, some economists at the Fed acknowledging that the natural rate concepts (and its relatives like the natural rate of unemployment) is vacuous, for two related reasons. First, the interest rate that will bring output to potential depends on a whole range of contingent factors, including other policy choices and the current level of output; and second, that potential output itself depends on the path of demand. Neither potential output nor the natural rate reflects some deep, structural parameters. They conclude:

the risks associated with monetary easing are asymmetric. That is, excessive easing can be reversed, but excessive tightening may cause irreversible damage to the economy’s potential output.

In the research described in this blog, we focus on the effect of recessions on human capital. Recessions may affect potential output through other channels as well, such as lower capital accumulation, lower labor force participation, slow productivity growth, and so forth. Our research would suggest that to the extent that these mechanisms are operative, a monetary policy that seeks to track measured natural rates—of unemployment, interest rates, and so forth—might be insufficiently accommodative to engineer a full and quick recovery after a large recession. Such policies fall short because in a world with hysteresis, “natural” rates are endogenous. Policy should set these rates, not track them.

Also on a personal level, it’s nice to see that the phrases “potential output,” “other channels,” “lower labor force particiaption,” and “slow productivity growth” all link back to posts on this very blog. Maybe someone is listening.

More me being listened to: Here is a short interview I did with KCBS radio in the Bay area, on what’s wrong with economics. And here is a nice writeup by Cory Doctorow at BoingBoing of “Disgorge the Cash,” my Roosevelt paper on shareholder payouts and investment.

Still disgorging. Speaking of that: There were two new working papers out from the NBER last week on corporate finance, governance and investment. I’ve only glanced at them (end of semester crunch) but they both look like important steps forward for the larger disgorge the cash/short-termism argument. Here are the abstracts:

Lee, Shin and Stultz – Why Does Capital No Longer Flow More to the Industries with the Best Growth Opportunities?

With functionally efficient capital markets, we expect capital to flow more to the industries with the best growth opportunities. As a result, these industries should invest more and see their assets grow more relative to industries with the worst growth opportunities. We find that industries that receive more funds have a higher industry Tobin’s q until the mid-1990s, but not since then. Since industries with a higher funding rate grow more, there is a negative correlation not only between an industry’s funding rate and industry q but also between capital expenditures and industry q since the mid-1990s. We show that capital no longer flows more to the industries with the best growth opportunities because, since the middle of the 1990s, firms in high q industries increasingly repurchase shares rather than raise more funding from the capital markets.

And:

Gutierrez and Philippon – Investment-less Growth: An Empirical Investigation

We analyze private fixed investment in the U.S. over the past 30 years. We show that investment is weak relative to measures of profitability and valuation… We use industry-level and firm-level data to test whether under-investment relative to Q is driven by (i) financial frictions, (ii) measurement error (due to the rise of intangibles, globalization, etc), (iii) decreased competition (due to technology or regulation), or (iv) tightened governance and/or increased short-termism. We do not find support for theories based on risk premia, financial constraints, or safe asset scarcity, and only weak support for regulatory constraints. Globalization and intangibles explain some of the trends at the industry level, but their explanatory power is quantitatively limited. On the other hand, we find fairly strong support for the competition and short-termism/governance hypotheses. Industries with less entry and more concentration invest less, even after controlling for current market conditions. Within each industry-year, the investment gap is driven by firms that are owned by quasi-indexers and located in industries with less entry/more concentration. These firms spend a disproportionate amount of free cash flows buying back their shares.

I’m especially glad to see Philippon taking this question up. His Has Finance Become Less Efficient is kind of a classic, and in general he somehow seems to manages to be both a big-time mainstream finance guy and closely attuned to observable reality. A full post on the two NBER papers soon, hopefully, once I’ve had time to read them properly.

“Sets” how, exactly? Here’s a super helpful piece from the Bank of France on the changing mechanisms through which central banks — the Fed in particular — conduct monetary policy. It’s the first one in this collection — “Exiting low interest rates in a situation of excess liquidity: the experience of the Fed.” Textbooks tell us blandly that “the central bank sets the interest rate.” This ignores the fact that there are many interest rates in the economy, not all of which move with the central bank’s policy rate. It also ignores the concrete tools the central bank uses to set the policy rate, which are not trivial or transparent, and which periodically have to adapt to changes in the financial system. Post-2008 we’ve seen another of these adaptations. The BoF piece is one of the clearest guides I’ve seen to the new dispensation; I found it especially clarifying on the role of reverse repos. You could probably use it with advanced undergraduates.

Zoltan Pozsar’s discussion of the same issues is also very good — it adds more context but is a bit harder to follow than the BdF piece.

When he’s right, he’s right. I have my disagreements with Brad DeLong (doesn’t everyone?), but a lot of his recent stuff has been very good. Here are a couple of his recent posts that I’ve particularly liked. First, on “structural reform”:

The worst possible “structural reform” program is one that moves a worker from a low productivity job into unemployment, where they then lose their weak tie social network that allows them to get new jobs. … “Structural reforms” are extremely dangerous unless you have a high-pressure economy to pull resources out of low productivity into high productivity sectors.

The view in the high councils of Europe is that, when there is a high-pressure economy, politicians will not press for “structural reform”: there is no obvious need, and so why rock the boat? Politicians kick every can they can down the road, and you can only try “structural reform” when unemployment is high–and thus when it is likely to be ineffective if not destructive.

This gets both the substance and the politics right, I think. Although one might add that structural reform also often means reducing wages and worker power in high productivity sectors as well.

Second, criticizing Yellen’s opposition to more expansionary policy,which she says is no longer needed to get the economy back to full employment.

If the Federal Reserve wants to have the ammunition to fight the next recession when it happens, it needs the short-term safe nominal interest rate to be 5% or more when the recession hits. I believe that is very unlikely to happen without substantial fiscal expansion. … In the world that Janet Yellen sees, “fiscal policy is not needed to provide stimulus to get us back to full employment.” But fiscal stimulus is needed to create a situation in which full employment can be maintained…. if we do not shift to a more expansionary fiscal policy–and the higher neutral rate of interest that it brings–now, what do we envision will happen when the next recession arrives?

This is the central point of my WCEG working paper — that output is jointly determined by the interest rate and the fiscal balance, so the “natural rate” depends on the current stance of fiscal policy. Plus the argument that, in a world where the zero lower bound is a potential constraint — or more broadly, where the expansionary effects of monetary policy are limited — what is sometimes called “crowding out” is a feature, not a bug. Totally right, but there’s one more step I wish DeLong would take. He writes a lot, and it’s quite possible I’ve missed it, but has he ever followed this argument to its next logical step and concluded that the fiscal surpluses of the 1990s were, in retrospect, a bad idea?

Farmer on government debt. Also on government budgets, here are some sensible observations on the UK’s, from Roger Farmer. First, the British public deficit is not especially high by historical standards; second, past reductions in debt-GDP ratios were achieved by growth raising the denominator, not surpluses reducing the numerator; and third, there is nothing particularly desirable about balanced budgets or lower debt ratios in principle. Anyone reading this blog has probably heard these arguments a thousand times, but it’s nice to get them from someone other than the usual suspects.

Deviation and trend. I was struck by this slide from the BIS. The content is familiar; what’s interesting is that they take the deviation of GDP from the pre-criss trend as straightforward evidence of the costs of the crisis, and not a demographic-technological inevitability.

Cap and dividend. In Jacobin, James Boyce and Mark Paul make the case for carbon permits. I used to take the conventional view on carbon pricing — that taxes and permits were equivalent in principle, and that taxes were likely to work better in practice. But Boyce’s work on this has convinced me that there’s a strong case for preferring dividends. A critical part of his argument is that the permits don’t have to be tradable — short-term, non transferrable permits avoid a lot of the problems with “cap and trade” schemes.

Why teach the worst? In a post at Developing Economics, New School grad student Ingrid Harvold Kvangraven forthrightly makes the case for teaching “the worst of mainstream economics” to non-economists. As it happens, I don’t agree with her arguments here. I don’t think there’s a hard tradeoff between teaching heterodox material we think is true, and teaching orthodox material students will need in future classes or work. I think that with some effort, it is possible to teach material that is both genuinely useful and meaningful, and that will serve students well in future economics class. And except for students getting a PhD in economics themselves — and maybe not even them — I don’t think “learning to critique mainstream theories” is a very pressing need. But I like the post anyway. The important thing is that all of us — especially on the heterodox side — need to think more of teaching not as an unfortunate distraction, but as a core part of our work as economists. She takes teaching seriously, that’s the important thing.

Apple in the balance of payments. From Brad Setser, here’s a very nice example of critical reading of the national accounts. Perhaps even more than in other areas of accounts, the classification of different payments in the balance of payments is more or less arbitrary, contested, and frequently changed. It’s also shaped more directly by private interests — capital flight, tax avoidance and so on often involve moving cross-border payments from one part of the BoP to another. So we need to be even more scrupulously attentive with BoP statistics than with others to how concrete social reality gets reflected in the official numbers. The particular reality Setser is interested in is Apple’s research and development spending in the US, which ought to show up in the BoP as US service exports. But hardly any of it does, because — as he shows — Apple arranges for almost all its IP income to show up in low-tax Ireland instead. To me, the fundamental lesson here is about the relation between statistical map and economic territory. But as Setser notes, there’s also a more immediate policy implication:

Trade theory says that if the winners from globalization compensate the losers from globalization, everyone is better off. But I am not quite sure how that is supposed to happen if the winners are in some significant part able to structure their affairs so that a large share of their income is globally (almost) untaxed.

Lost in Fiscal Space

Arjun and Jayadev and I have a working paper up at the Washington Center for Equitable Growth on the conflict between conventional macroeconomic policy and Lerner-style functional finance. Here’s the accompanying blogpost, cross-posted from the WCEG blog.

One pole of current debates about U.S. fiscal policy is occupied by the “functional finance” position—the view usually traced back to the late economist Abba Lerner—that a government’s budget balance can be set at whatever level is needed to stabilize aggregate demand, without worrying about the level of government debt. At the other pole is the conventional view that a government’s budget balance must be set to keep debt on a sustainable trajectory while leaving the management of aggregate demand to the central bank. Both sides tend to assume that these different policy views come from fundamentally different ideas about how the economy works.

A new working paper, “Lost in Fiscal Space,” coauthored by myself and Arjun Jayadev, suggests that, on the contrary, the functional finance and the conventional approaches can be understood in terms of the same analytic framework. The claim that fiscal policy can be used to stabilize the economy without ever worrying about debt sustainability sounds radical. But we argue that it follows directly from the standard macroeconomic models that are taught to undergraduates and used by policymakers.

Here’s the idea. There are two instruments: first, the interest rate set by the central bank; and second, the fiscal balance—the budget surplus or deficit. And there are two targets: the level of aggregate demand consistent with acceptable levels of inflation and unemployment; and a stable debt-to-GDP ratio. Each instrument affects both targets—output depends on both the interest rate set by monetary authorities and on the fiscal balance (as well as a host of other factors) while the change in the debt depends on both new borrowing and the interest paid on existing debt. Conventional policy and functional finance represent two different choices about which instrument to assign to which target. The former says the interest rate instrument should focus on demand and the fiscal-balance instrument should focus on the debt-ratio target, the latter has them the other way around.

Does it matter? Not necessarily. There is always one unique combination of interest rate and budget balance that delivers both stable debt and price stability. If policy is carried out perfectly then that’s where you will end up, regardless of which instrument is assigned to which target. In this sense, the functional finance position is less radical than either its supporters or its opponents believe.

In reality, of course, policies are not followed perfectly. One common source of problems is when decisions about each instrument are made looking only at the effects on its assigned target, ignoring the effects on the other one. A government, for example, may adopt fiscal austerity to bring down the debt ratio, ignoring the effects this will have on aggregate demand. Or a central bank may raise the interest rate to curb inflation, ignoring the effects this will have on the sustainability of the public debt. (The rise in the U.S. debt-to-GDP ratio in the 1980s owes more to Federal Reserve chairman Paul Volcker’s interest rate hikes than to President Reagan’s budget deficits.) One natural approach, then, is to assign each target to the instrument that affects it more powerfully, so that these cross-effects are minimized.

So far this is just common sense; but when you apply it more systematically, as we do in our working paper, it has some surprising implications. In particular, it means that the metaphor of “fiscal space” is backward. When government debt is large, it makes more sense, not less, to use active fiscal policy to stabilize demand—and leave the management of the public debt ratio to the central bank. The reason is simple: The larger the debt-to-GDP ratio, the more that changes in the ratio depend on the difference in between the interest rate and the growth rate of GDP, and the less those changes depend on current spending and revenue (a point that has been forcefully made by Council of Economic Adviser s Chair Jason Furman). This is what we see historically: When the public debt is very large, as in the United States during and immediately after the Second World War, the central bank focused on stabilizing the public debt rather than on stabilizing demand, which means responsibility for aggregate demand fell to the budget authorities.

We hope this paper will help clarify what’s at stake in current debates about U.S. fiscal policy. The question is not whether it’s economically feasible to use fiscal policy as our primary instrument to manage aggregate demand. Any central bank that is able to achieve its price stability and full employment mandates is equally able to keep the debt-to-GDP ratio constant while the budget authorities manage demand. The latter task may even be easier, especially when debt is already high. The real question is who we, as a democratic society, trust to make decisions about the direction of the economy as a whole.

UPDATE: Nick Rowe has an interesting response here. (And an older one here, with a great comments thread following it.)

Thinking about Monetary Policy

There’s been even more ink spilled lately than usual over the reasons monetary policy seems to have lost its mojo, and what it would take to get it back. Admittedly a lot of it is the same dueling pronouncements over whether helicopter money must always or can never work, but with the volume turned up a notch.

From my point of view, the conceptual issues here are simpler than you’d guess from the shouting. It comes down to two questions. First, how much control does the central bank have over the terms on which various economic units can adjust their balance sheets by selling assets or issuing new liabilities? And second, how many units would increase their spending on goods and services if they could more easily make the required balance sheet adjustments? Obviously, these questions are not straightforward. And they have to be answered jointly — to be effective, monetary policy has to reach not just the elasticity of the financial system in general, but its elasticity at the points where it meets financially-constrained units. But in principle, it’s simple enough.

The whole question, it seems to me, is made more confusing than it needs to be by two bad habits of economists. First is the tendency to think of the economy as a tightly articulated system, with just a few degrees of freedom. (This is one way of describing the focus on equilibrium.) To an economist, the economy is like a pool of water, where a disturbance to any part of it leads to a rapid adjustment of the whole system to a final state that can be described on the basis of a few parameters, without any information about specific components. What’s the alternative? The economy is like a pile of rocks: Disturbances may remain local rather than being transmitted to the whole system; less information about the structure can be derived from a few global parameters and more depends on the contingent states of the individual components; and stability is the result not of rapid adjustment, but rather of buffers that make adjustment unnecessary. Economists’ fixation on tightly-articulated systems tempts us to think about a single parameter (the interest rate, the money supply) changing uniformly through the economy (and often over all of time), and economic units fully adjusting their behavior in response. It leads to a focus on the ultimate endpoint of an adjustment process rather than its next step. This yields stronger, and often paradoxical, conclusions than you would reach if you imagined beliefs and behavior changing locally and incrementally.

The second vice is economists’ incorrigible tendency to mistake the map for the territory. Like the first, this leads us to overvalue formal logical analysis at the expense of the concrete and historical. It also leads us to take an abstract representation that was adopted to clarify a particular question in a particular context, and treat it as an object in itself, as if it descried a self-contained world. Anyone who’s spent time around economists will have noticed their habit of regarding any label on a variable in an equation, as a physical object out there in the world. There’s nothing wrong — it should go without saying — with formal, logical analysis; as Marx said, abstraction is the social scientist’s equivalent of the microscope or telescope. The difference is that economists treat models as toy train sets rather than as tools. In the case of monetary policy, it works like this. The central bank adopts a policy tool which, in the institutional context at the time, gives them adequate control over the overall pace of credit expansion. Economists abstract from the — genuinely, but only for the moment — irrelevant details of exactly how this instrument works, and postulate a direct connection with the economic outcome it is meant to control. To make communication with other economists easier, they often also construct a model where just exactly the intervention carried out by the central bank is what’s needed to restore the Walrasian optimum. This may be harmless enough as long as the policy framework persists. But the dogmatic insistence that “the central bank sets the money supply” or “the central bank sets the interest rate” is a source of endless confusion when the instrument is changing to something else.

So coming back to the concrete situation, how much can the Fed influence the expansion of bank balance sheets, and how much is expenditure on current production held down by the inelasticity of bank balance sheets? In the idealized financial world of circa 1950, the answer was simple. Commercial bank liabilities were deposits; deposits expanded through investment loans to business and households; and the total volume of deposits was strictly limited by the reserves made available by the Fed. The situation today is more complicated. But we have a better chance of making sense of it if we don’t get distracted by brain teasers about “M”.

I wrote this a month or two ago and didn’t post it for some reason. As a critical post, it really ought to have links to examples of the positions being criticized; but at this point it doesn’t seem worth the trouble.

Links for October 6

More methodenstreit. I finally read the Romer piece on the trouble with macro. Some good stuff in there. I’m glad to see someone of his stature making the point that the Solow residual is simply the part of output growth that is not explained by a production function. It has no business being dressed up as “total factor productivity” and treated as a real thing in the world. Probably the most interesting part of the piece was the discussion of identification, though I’m not sure how much it supports his larger argument about macro. The impossibility of extracting causal relationships from statistical data would seem to strengthen the argument for sticking with strong theoretical priors. And I found it a bit odd that his modus ponens for reality-based macro was accepting that the Fed brought down output and (eventually) inflation in the early 1980s by reducing the money supply — the mechanisms and efficacy of conventional monetary policy are not exactly settled questions. (Funnily enough, Krugman’s companion piece makes just the opposite accusation of orthodoxy — that they assumed an increase in the money supply would raise inflation.) Unlike Brian Romanchuk, I think Romer has some real insights into the methodology of economics. There’s also of course some broadsides against the policy views of various rightwing economists. I’m sympathetic to both parts but not sure they don’t add up to less than their sum.

David Glasner’s interesting comment on Romer makes in passing a point that’s bugged me for years — that you can’t talk about transitions from one intertemporal equilibrium to another, there’s only the one. Or equivalently, you can’t have a model with rational expectations and then talk about what happens if there’s a “shock.” To say there is a shock in one period, is just to say that expectations in the previous period were wrong. Glasner:

the Lucas Critique applies even to micro-founded models, those models being strictly valid only in equilibrium settings and being unable to predict the adjustment of economies in the transition between equilibrium states. All models are subject to the Lucas Critique.

Here’s another take on the state of macro, from the estimable Marc Lavoie. I have to admit, I don’t care for way it’s framed around “the crisis”. It’s not like DSGE models were any more useful before 2008.

Steve Keen has his own view of where macro should go. I almost gave up on reading this piece, given Forbes’ decision to ban on adblockers (Ghostery reports 48 different trackers in their “ad-light” site) and to split the article up over six pages. But I persevered and … I’m afraid I don’t see any value in what Keen proposes. Perhaps I’ll leave it at that. Roger Farmer doesn’t see the value either.

In my opinion, the way forward, certainly for people like me — or, dear reader, like you — who have zero influence on the direction of the economics profession, is to forget about finding the right model for “the economy” in the abstract, and focus more on quantitative description of concrete historical developments. I expressed this opinion in a bunch of tweets, storified here.

The Gosplan of capitalism. Schumpeter described banks as capitalism’s equivalent of the Soviet planning agency — a bank loan can be thought of as an order allocating part of society’s collective resources to a particular project. This applies even more to the central banks that set the overall terms of bank lending, but this conscious direction of the economy has been hidden behind layers of ideological obfuscation about the natural rate, policy rules and so on. As DeLong says, central banks are central planners that dare not speak their name. This silence is getting harder to maintain, though. Every day there seems to be a new news story about central banks intervening in some new credit market or administering some new price. Via Ben Bernanke, here is the Bank of Japan announcing it will start targeting the yield of 10-year Japanese government bonds, instead of limiting itself to the very short end where central banks have traditionally operated. (Although as he notes, they “muddle the message somewhat” by also announcing quantities of bonds to be purchased.) Bernanke adds:

there is a U.S. precedent for the BOJ’s new strategy: The Federal Reserve targeted long-term yields during and immediately after World War II, in an effort to hold down the costs of war finance.

And in the FT, here is the Bank of England announcing it will begin buying corporate bonds, an unambiguous step toward direct allocation of credit:

The bank will conduct three “reverse auctions” this week, each aimed at buying the bonds from particular sectors. Tuesday’s auction focuses on utilities and industries. Individual companies include automaker Rolls-Royce, oil major Royal Dutch Shell and utilities such as Thames Water.

Inflation or socialism. That interventions taken in the heat of a crisis to stabilize financial markets can end up being steps toward “a more or less comprehensive socialization of investment,” may be more visible to libertarians, who are inclined to see central banks as a kind of socialism already. At any rate, Scott Sumner has been making some provocative posts lately about a choice between “inflation or socialism”. Personally I don’t have much use for NGDP targeting — Sumner’s idée fixe — or the analysis that underlies it, but I do think he is onto something important here. To translate the argument into Keynes’ terms, the problem is that the minimum return acceptable to wealth owners may be, under current conditions, too high to justify the level of investment consistent with the minimum level of growth and employment acceptable to the rest of society. Bridging this gap requires the state to increasingly take responsibility for investment, either directly or via credit policy. That’s the socialism horn of the dilemma. Or you can get inflation, which, in effect, forces wealthholders to accept a lower return; or put it more positively, as Sumner does, makes it more attractive to hold wealth in forms that finance productive investment. The only hitch is that the wealthy — or at least their political representatives — seem to hate inflation even more than they hate socialism.

The corporate superorganism. One more for the “finance-as-socialism” files. Here’s an interesting working paper from Jose Azar on the rise of cross-ownership of US corporations, thanks in part to index funds and other passive investment vehicles.

The probability that two randomly selected firms in the same industry from the S&P 1500 have a common shareholder with at least 5% stakes in both firms increased from less than 20% in 1999Q4 to around 90% in 2014Q4 (Figure 1).1 Thus, while there has been some degree of overlap for many decades, and overlap started increasing around 2000, the ubiquity of common ownership of large blocks of stock is a relatively recent phenomenon. The increase in common ownership coincided with the period of fastest growth in corporate profits and the fastest decline in the labor share since the end of World War II…

A common element of theories of the firm boundaries is that … either firms are separately owned, or they combine. In stock market economies, however, the forces of portfolio diversification lead to … blurring firm boundaries… In the limit, when all shareholders hold market portfolios, the ownership of the firms becomes exactly identical. From the point of view of the shareholders, these firms should act “in unison” to maximize the same objective function… In this situation the firms have in some sense become branches of a larger corporate superorganism.

The same assumptions that generate the “efficiency” of market outcomes imply that public ownership could be just as efficient — or more so in the case of monopolies.

The present paper provides a precise efficiency rationale for … consumer and employee representation at firms… Consumer and employee representation can reduce the markdown of wages relative to the marginal product of labor and therefore bring the economy closer to a competitive outcome. Moreover, this provides an efficiency rationale for wealth inequality reduction –reducing inequality makes control, ownership, consumption, and labor supply more aligned… In the limit, when agents are homogeneous and all firms are commonly owned, … stakeholder representation leads to a Pareto efficient outcome … even though there is no competition in the economy.

As Azar notes, cross-ownership of firms was a major concern for progressives in the early 20th century, expressed through things like the Pujo committee. But cross-ownership also has been a central theme of Marxists like Hilferding and Lenin. Azar’s “corporate superorganism” is basically Hilferding’s finance capital, with index funds playing the role of big banks. The logic runs the same way today as 100 years ago. If production is already organized as a collective enterprise run by professional managers in the interest of the capitalist class as a whole, why can’t it just as easily be managed in a broader social interest?

Global pivot? Gavyn Davies suggests that there has been a global turn toward more expansionary fiscal policy, with the average rich country fiscal balances shifting about 1.5 points toward deficit between 2013 and 2016. As he says,

This seems an obvious path at a time when governments can finance public investment programmes at less than zero real rates of interest. Even those who believe that government programmes tend to be inefficient and wasteful would have a hard time arguing that the real returns on public transport, housing, health and education are actually negative.

I don’t know about that last bit, though — they don’t seem to find it that hard.

Taylor rule toy. The Atlanta Fed has a cool new gadget that lets you calculate the interest rate under various versions of the Taylor Rule. It will definitely be useful in the classroom. Besides the obvious pedagogical value, it also dramatizes a larger point — that macroeconomic variables like “inflation” aren’t objects simply existing in the world, but depend on all kinds of non-obvious choices about measurement and definition.

The new royalists. DeLong summarizes the current debates about monetary policy:

1. Do we accept economic performance that all of our predecessors would have characterized as grossly subpar—having assigned the Federal Reserve and other independent central banks a mission and then kept from them the policy tools they need to successfully accomplish it?

2. Do we return the task of managing the business cycle to the political branches of government—so that they don’t just occasionally joggle the elbows of the technocratic professionals but actually take on a co-leading or a leading role?

3. Or do we extend the Federal Reserve’s toolkit in a structured way to give it the tools it needs?

This is a useful framework, as is the discussion that precedes it. But what jumped out to me is how he reflexively rejects option two. When it comes to the core questions of economic policy — growth, employment, the competing claims of labor and capital — the democratically accountable, branches of government must play no role. This is all the more striking given his frank assessment of the performance of the technocrats who have been running the show for the past 30 years: “they—or, rather, we, for I am certainly one of the mainstream economists in the roughly consensus—were very, tragically, dismally and grossly wrong.”

I think the idea that monetary policy is a matter of neutral, technical expertise was always a dodge, a cover for class interests. The cover has gotten threadbare in the past decade, as the range and visibility of central bank interventions has grown. But it’s striking how many people still seem to believe in a kind of constitutional monarchy when it comes to central banks. They can see people who call for epistocracy — rule by knowers — rather than democracy as slightly sinister clowns (which they are). And they can simultaneously see central bank independence as essential to good government, without feeling any cognitive dissonance.

Did extending unemployment insurance reduce employment? Arin Dube, Ethan Kaplan, Chris Boone and Lucas Goodman have a new paper on “Unemployment Insurance Generosity and Aggregate Employment.” From the abstract:

We estimate the impact of unemployment insurance (UI) extensions on aggregate employment during the Great Recession. Using a border discontinuity design, we compare employment dynamics in border counties of states with longer maximum UI benefit duration to contiguous counties in states with shorter durations between 2007 and 2014. … We find no statistically significant impact of increasing unemployment insurance generosity on aggregate employment. … Our point estimates vary in sign, but are uniformly small in magnitude and most are estimated with sufficient precision to rule out substantial impacts of the policy…. We can reject negative impacts on the employment-to-population ratio … in excess of 0.5 percentage points from the policy expansion.

Media advisory with synopsis is here.

On other blogs, other wonders

Larry Summers: Low laborforce participation is mainly about weak demand, not demographics or other supply-side factors.

Nancy Folbre on Greg Mankiw’s claims that the one percent deserves whatever it gets.

At Crooked Timber, John Quiggin makes some familiar — but correct and important! — points about privatization of public services.

In the Baffler, Sam Kriss has some fun with the new atheists. I hadn’t encountered Kierkegaard’s parable of the madman who tells everyone who will listen “the world is round!” but it fits perfectly.

A valuable article in the Washington Post on cobalt mining in Africa. Tracing out commodity chains is something we really need more of.

Buzzfeed on Blue Apron. The reality of the robot future is often, as here, just that production has been reorganized to make workers less visible.

At Vox, Rachelle Sampson has a piece on corporate short-termism. Supports my sense that this is an area where there may be space to move left in a Clinton administration.

Sven Beckert has edited a new collection of essays on the relationship between slavery and the development of American capitalism. Should be worth looking at — his Empire of Cotton is magnificent.

At Dissent, here’s an interesting review of Jefferson Cowie’s and Robert Gordon’s very different but complementary books on the decline of American growth.