Must-read: David Wessel: “Are We Ready for the Next Recession?”

Must-Read: David Wessel: Are We Ready for the Next Recession?: “Financial markets seem to be anxious that a U.S. recession is on the horizon…

…even though economic forecasters disagree. When the next recession arrives, will fiscal and monetary policy be able to respond? If so, how? The Federal Reserve is holding short-term interest rates near zero and faces resistance, internally and externally, to reviving large-scale purchases of assets. The federal debt is larger, as a share of the economy, than at any time since the end of World War II and is projected to climb further. On March 21, the Hutchins Center on Fiscal and Monetary Policy will consider which fiscal and monetary policy tools will be available in the event of a recession—and which won’t—and how effective additional fiscal and monetary stimulus is likely to be, along with new ideas to make fiscal policy more effective…. David Wessel… Wendy Edelberg… Ben Spielberg… Phillip Swagel… Richard Clarida… Jon Faust… Louise Sheiner… Jared Bernstein

Must-read: Jonathan Portes and Simon Wren-Lewis: “Issues in the Design of Fiscal Policy Rules”

Must-Read: Jonathan Portes and Simon Wren-Lewis: Issues in the Design of Fiscal Policy Rules: “The potential conflict in designing rules between the need to mimic optimal policy…

…where debt is a shock absorber and is adjusted only very slowly, and the need to prevent deficit bias…. It may therefore make sense to make different recommendations depending on… the nature of governments…. [In] governments… not… subject to deficit bias… simple debt feedback rules come close to reproducing the optimal fiscal policy… [if] the exchange rate is floating and there is little risk of hitting the ZLB…. [G]overnment[s] behav[ing] in a non-benevolent manner… need… operational targets… fixed for the end of the natural term of the government… [to] provide strong incentives… for cyclically adjusted primary deficits…. These targets should be set in cooperation with a fiscal council, which would monitor progress… [and,] in exigent circumstances… suggest that the target be revised….

These rules should not apply if interest rates have hit the ZLB. In that case, fiscal policy should focus on demand stabilization… the suspension of the rule while the ZLB constraint applies, and not its modification. This ‘knockout’ should be an explicit part of the rule…

Ordoliberalismus and Ordovolkismus

At the zero lower bound on safe nominal short-term interest rates, an expansionary fiscal policy impetus of d percent of current GDP will:

  1. raise current output by (μ)d,
  2. raise future output by (φμ)d, and
  3. raise the debt to GDP ratio by a proportional amount ΔD = (1 – μτ – μφ)d,

where [mu] is the Keynesian multiplier, τ is the tax rate, and φ is the hysteresis coefficient.

It will then require a commitment of (r-g)ΔD percent of future output the service the additional debt, where r is the real interest rate on government debt and g is the growth rate of the economy. The debt service can be raised through explicit and fiscal deadweight loss-inducing taxation, through inflation–a tax on outside money balances accompanied by disruption of the unit of account–or through financial repression–a tax on the banking system but also imposes financial distortions.

That is the simple arithmetic of expansionary fiscal policy in a liquidity trap.

The question of whether and how much expansionary fiscal policy a government facing a liquidity trap should engage and then becomes a technocratic one of calculating uncertain benefits and uncertain costs. Why uncertain? Because our knowledge of the parameters of the economy is uncertain. And we are particularly uncertain not just of the outcome of the key debt- amortization parameter r-g but of its ex-ante distribution as well. There is this an element of radical, almost Knightian, uncertainty here in the benefit-cost calculation. But it remains a benefit-cost calculation. And rare these days is the competent economist Who has thought through the benefit-cost calculation and failed to conclude that the governments of the United States, Germany, and Britain have large enough multipliers, strong enough hysteresis coefficients for infrastructure investment programs, and sufficient fiscal space–favorable likely distributions of r-g–to make substantially more expansionary fiscal policies than they are currently following almost no-brainers.

It is against the backdrop of this situation that we find aversion to fiscal expansion being driven not by pragmatic technocratic benefit-cost calculations but by raw ideology. And so we find Barry Eichengreen being… shrill:

Barry Eichengreen: Confronting the Fiscal Bogeyman: “The world economy is visibly sinking, and the policymakers who are supposed to be its stewards are tying themselves in knots…

…Or so suggest the results of the G-20 summit held in Shanghai…. All that emerged… was an anodyne statement… structural reforms… avoiding beggar-thy-neighbor policies. Once again, monetary policy was left… the only game in town…. Someone needs to do something to keep the world economy afloat, and central banks are the only agents capable of acting. The problem is that monetary policy is approaching exhaustion….

The solution is straightforward. It is to fix the problem of deficient demand… by boosting public spending. Governments should borrow to invest in research, education, and infrastructure…. Such investments cost little given low interest rates… [and] enhance the returns on private investment [as well]…. Thus it is disturbing to see… particularly… the US and Germany [refusing] to even contemplate such action, despite available fiscal space….

Barry blames Germany’s derangement on the ideology of Ordliberalism:

In Germany, ideological aversion to budget deficits… is rooted in the post-World War II doctrine of ‘ordoliberalism,’ which counseled that government should enforce contracts and ensure adequate competition but otherwise avoid interfering in the economy…. The ordoliberal emphasis on personal responsibility fostered an unreasoning hostility to the idea that actions that are individually responsible do not automatically produce desirable aggregate outcomes…. It rendered Germans allergic to macroeconomics….

Barry blames the U.S. derangement on a somewhat analogous ideological formation—call it Ordovolkism:

[In] the US… citizens have been suspicious of federal government power, including the power to run deficits, which is fundamentally a federal prerogative.… That suspicion was strongest in the American South… rooted in the fear that the federal government might abolish slavery…. During the civil rights movement, it was again the Southern political elite that opposed the muscular use of federal power…. The South [became] a solid Republican bloc and leave its leaders antagonistic to all exercise of federal power except for the enforcement of contracts and competition—a hostility that notably included countercyclical macroeconomic policy. Welcome to ordoliberalism, Dixie-style. Wolfgang Schäuble, meet Ted Cruz.

And Barry concludes by asking:

Ideological and political prejudices deeply rooted in history will have to be overcome to end the current stagnation. If an extended period of depressed growth following a crisis isn’t the right moment to challenge them, then when is?

Barry intends this last as a rhetorical question: It is the great Hillel’s “If not now, when?”, to which the proper answer is: “Then now!”

But it is quite possible that the best answer is, instead: “Never!”

While Austerian fear and suspicion of countercyclical monetary policy is rooted in the same Ordoliberal and Ordovolkist ideological fever swamps as objections to countercyclical fiscal policy, it is much weaker. It is much weaker because fundamentalist cries for an automatic monetary system—whether based on a gold standard, a k%/year percent growth rule, or John Taylor’s interest-rate rule—have crashed and burned so spectacularly so many times that they lack even the barest surface plausibility. History has definitively refuted Henry Simons’s call for rules rather than authority in monetary policy. The near-consensus agreed-upon task of institution design for monetary policy is not to construct rules but, instead, to construct authorities with technocratic competence and sensible objectives and values.

Thus one way around the Ordoliberal and Ordovolkist ideological blockages is to redefine a sufficient quantum of countercyclical fiscal policy as monetary policy. I call this “social credit”. Others call it “helicopter money”. Move the central bank’s seigniorage revenue stream outside of the government’s consolidated budget. Assign the disposition of this revenue stream to the central bank. It is not first-best. It may be good enough to do the job.

Another way of attempting to finesse the problem is to construct a fiscal council of some sort. Such an institution, assigned responsibility for the government’s investment budget, may attract the technocratic competence and status of the central banks, and so outflank Ordoliberal and Ordovolkist ideological blockages. Are haps.

But if neither of these expedients—neither social credit or helicopter money on the one hand nor fiscal councils on the other—will serve, then Barry Eichengreen is completely right: it is long past time for a frontal intellectual assault on the dangerous and destructive ideologies of Ordoliberalism and Ordovolkism.

And that assault would be, itself, part of a broader intellectual struggle. The major point of Steve Cohen’s and my Concrete Economics is precisely that ideology is a very bad guide the economic policy. This is simply another—albeit an unusually important—instance.

Must-read: Simon Wren-Lewis: “A (Much) Better Fiscal Rule”

Must-Read: Simon Wren-Lewis: A (Much) Better Fiscal Rule: “Today the Labour Shadow Chancellor John McDonnell…

…will give a speech where he puts forward an alternative fiscal rule… a rolling target for the government’s current balance: within 5 years taxes must cover current spending. It leaves the government free to borrow to invest…. There is a commitment to reduce debt relative to trend GDP over the course of a parliament. No doubt we will hear the usual cries from the opponents of sensible fiscal rules: Labour plan to borrow billions more than George Osborne and they plan to go on borrowing forever. The simple response to that should be that it is right to borrow to invest in the country’s future, just as firms borrow to invest in capital and individuals borrow to invest in a house. Indeed, with so many good projects for the government to choose from, and with interest rates at virtually zero, it is absolute madness not to investment substantially in the coming years….

Recessions come and go, you might respond, but higher debt will always be with us. That ignores two key points. First, prolonged and deep recessions cause lasting damage. UK GDP per head is currently over 15% below pre-recession trends. Does none of that have anything to do with the slowest UK recovery from a recession in centuries? Second using fiscal policy to end recessions quickly does not mean higher debt forever. The key point is that debt can be reduced once the recession is over and interest rates are safely above their lower bound. Doing that will be no cost to the economy as a whole, as monetary policy can offset the impact on demand. Obsessing about debt during a recession, by contrast, costs jobs and reduces incomes, as every economics student knows and as the OBR have shown….

Some Labour MPs and commentators. They say, quite rightly, that one of the main reasons the 2015 election was lost was because Labour were not trusted on fiscal policy. But the basic truth is that you do not enhance your fiscal credibility by signing up to a stupid fiscal rule. Apart from getting attacked for doing so by people like me, your collective heart is not really in it and it shows. You get trapped into proposing to shrink the state as Osborne is doing, or hitting the poor as Osborne is doing, or raising taxes which makes you unpopular. And if by chance it ever looks like you might be getting that trust back, Osborne or his successor will move the goalposts again.

The far more convincing way to get trust back is to adopt a fiscal rule that makes sense to both economists and the public (‘only borrowing to invest’), and actively talking about it….

The Conservatives know they are vulnerable on public investment. Osborne tries to give the impression that he is doing a lot of it, but the figures do not lie. In the last five years of the Labour government the average share of net public investment in GDP was over 2.5%. During the coalition years it fell to 2.2%, and for the five years from 2015 it is planned to average just 1.6%. That is not building for the future, but putting it in jeopardy, as those whose homes have been flooded have found to their cost.

Must-read: Barry Eichengreen: “Confronting the Fiscal Bogeyman”

Must-Read: Barry Eichengreen: Confronting the Fiscal Bogeyman: “The International Monetary Fund… warned the assembled G-20 attendees…

…[Yet] all that emerged from the meeting was an anodyne statement about pursuing structural reforms and avoiding beggar-thy-neighbor policies…. Once again, monetary policy was left… as the only game in town…. Someone needs to do something to keep the world economy afloat, and central banks are the only agents capable of acting. The problem is that monetary policy is approaching exhaustion…. The solution is straightforward. It is to fix the problem of deficient demand not by attempting to further loosen monetary conditions, but by boosting public spending… in research, education, and infrastructure…. Such investments cost little, given low interest rates. Productive public investment would also enhance the returns on private investment….

Thus, it is disturbing to see the refusal of policymakers, particularly in the US and Germany, to even contemplate such action, despite available fiscal space (as record-low treasury-bond yields and virtually every other economic indicator show). In Germany, ideological aversion to budget deficits runs deep… rooted in the post-World War II doctrine of ‘ordoliberalism’…. The ordoliberal emphasis on personal responsibility… rendered Germans allergic to macroeconomics….

The US did not experience hyperinflation…. But for the better part of two centuries, its citizens have been suspicious of federal government power, including the power to run deficits…. That suspicion was strongest in the American South, where it was rooted in the fear that the federal government might abolish slavery. In the mid-twentieth century, during the civil rights movement, it was again the Southern political elite that opposed the muscular use of federal power…. Lyndon Baines Johnson’s ‘Great Society’… render[ed] the South a solid Republican bloc and leave its leaders antagonistic to all exercise of federal power except for the enforcement of contracts and competition–a hostility that notably included countercyclical macroeconomic policy. Welcome to ordoliberalism, Dixie-style. Wolfgang Schäuble, meet Ted Cruz.

Ideological and political prejudices deeply rooted in history will have to be overcome to end the current stagnation. If an extended period of depressed growth following a crisis isn’t the right moment to challenge them, then when is?

Must-read: Ben Bernanke: “China’s Trilemma—and a Possible Solution”

Must-Read: The extremely-sharp Ben Bernanke continues to make the argument that the Washington-Consensus Great-Moderation division of labor between technocratic central banks and directly-elected governments–central banks tasked with macroeconomic stabilization, and directly-elected governments focused on rightsizing a public sector funded by an appropriately-prudent debt management system–is simply wrong and inadequate, as we have learned to our great cost. Here he addresses the problem of macroeconomic balancing in China, and says smart things:

Ben Bernanke: China’s Trilemma—and a Possible Solution: “Is the no-devaluation strategy a good one for China?…

…If it is, what does China need to do to make its exchange-rate commitments credible?… China’s ability to avoid a significant devaluation in the medium term will depend on a number of factors, including the country’s other policy choices. China… cannot simultaneously have more than two of the following three: (1) a fixed exchange rate; (2) independent monetary policy; and (3) free international capital flows….

Start with four premises…. 1. China is undergoing a difficult but necessary transition… to [a growth model] that focuses on… services and… consumer demand… accompanied by a slowdown in Chinese GDP growth…. 2. China’s growth appears to have slowed recently by more than the leadership expected or wanted…. 3. To support economic growth… China has eased monetary policy…. 4. At the same time, China has continued a process of reforming and opening up its capital markets. Notably, private Chinese citizens are allowed to invest some of their savings abroad, to a limit of $50,000 per person. Points #3 and #4 are the sources of China’s trilemma…. Chinese households and firms who are able to do so are spurning yuan-denominated investments and looking abroad for higher returns. However, increased private capital outflows also constitute a flight from the yuan toward the dollar and other currencies; that, in turn, puts downward pressure on China’s exchange rate.

In the short run, the PBOC can offset this pressure by selling some of its enormous stocks of dollar-denominated securities and buying yuan…. [But] here is the trilemma in action: If China wants to use monetary policy to manage domestic demand and to simultaneously free up international capital flows, it may not be able to fix the exchange rate at current levels…. One approach would be to devalue now and get it over with. (A series of small devaluations wouldn’t work, as expectations of future devaluations would just accelerate capital outflows.)… [But] a big yuan devaluation would likely be deflationary for the rest of the world… [and] would work against the goal of promoting services over exports. A second possibility… would be to stop or reverse the process of liberalizing capital flows…. This strategy… would sacrifice some of the progress that China has made in opening up its financial system…. Moreover, the horse may be out of the proverbial barn, in that the effectiveness of new capital controls in China would be uncertain…. A third option is to wait and hope…. However, hope is not a plan.

So what to do? An alternative worth exploring is targeted fiscal policy, by which I mean government spending and tax measures aimed specifically at aiding the transition…. Fiscal policies aimed at increasing income security, such as strengthening the pension system, would help to promote consumer confidence and consumer spending. Likewise, tax cuts or credits could be used to enhance households’ disposable income, and government-financed training and relocation programs could help workers transition from slowing to expanding sectors…. Targeted fiscal action has a lot to recommend it, given China’s trilemma. Unlike monetary easing, which works by lowering domestic interest rates, fiscal policy can support aggregate demand and near-term growth without creating an incentive for capital to flow out…

Social credit is the answer

Why is it called: “helicopter money”? Why isn’t it called: “expansionary fiscal policy with monetary support to neutralize any potential crowding-out of private-sector spending”?

Why did Milton Friedman set it forth in his writings as one of the paradigmatic cases of expansionary monetary policy? Why did Ben Bernanke refer to it and so gain his unwanted nickname of “Helicopter Ben”?

In Milton Friedman’s case, I believe that it was a conviction that the LM curve was steep enough and the IS curve flat enough that the fiscal side was fundamentally unimportant–that about the same effects were achieved whether the extra money was introduced into the economy via being dropped from helicopters or via open-market operations. To focus on how open-market operations worked would thus confuse listeners who would then have to think through asset market-equilibrium to no substantive gain in understanding. In Friedman’s view, the entire Tobin analytical tradition, not to mention Wicksell, was largely a distracting waste of time. So why go there?

In the case of Ben Bernanke and of the rest of the participants in today’s debate, I think it is has different causes. I think it is a result of the default Washington-Consensus Great-Moderation assignment of the stabilization-policy role to independent and technocratic central banks. In that paradigm, directly-elected governments are supposed to limit their focus to the “classical” tasks of rightsizing the public sector and adopting an appropriately-prudent long-term government-spending financing plan.

To speak of “expansionary fiscal policy with monetary support to neutralize any potential crowding-out of private-sector spending” is to open a can of worms. To speak of “helicopter money” is to convey the impression that this is the central bank undertaking its proper business, but in a context in which as a result of unfortunate historical accidents of institutional development the independent central bank needs the active support of the directly-elected government. The active support of the directly-elected government is needed undertake what is, after all, a fundamentally monetary policy. And it is, in this line of thinking, a fundamentally monetary policy: Milton Friedman himself said so.

Now comes the extremely-sharp Adair Turner to try to focus the debate in a productive direction.

Many today are unwilling to advocate for more expansionary fiscal policy out of:

  1. a fear that many economies that would find their governments engaging in it lack fiscal space for it to be of much use,
  2. a fear that directly-elected governments allowed to cross the line and engage in open-ended explicitly stabilization policy will not give due weight to the objective of keeping inflation low over the long term, or
  3. a fear that central banks allowed to control fiscal-policy levers will be captured by and use their powers to then take taxpayers’ money and spend it enriching the banking sector.

So what is the solution? How can we build institutions that will:

  1. avoid the Scylla of allowing directly-elected governments that use fiscal levers in support of monetary expansion to enforce fiscal dominance and abandon prudent inflation targets, while also

  2. avoiding the Charybdis of allowing central banks that may well have been partially-captured by their banking sectors of using their powers to spend the taxpayers’ money further enriching the bankers?

The solution is obvious: Social Credit. Adopt the policies of the Social Credit Part of Alberta in the 1930s. Adopt the policies of Upton Sinclair’s campaign for Governor of California in the 1930s. Adopt the policies that are taken as a matter of course and are in the background of Robert A. Heinlein’s 1947 novel Beyond This Horizon.

Central banks should, instead of taking all the revenue from seigniorage they create and transferring it all back to the Treasury, calculate each quarter how much of the seigniorage they hold should be distributed to citizens in the form of that quarter’s helicopter drop.

I am not certain about how the legal-institutional constraints bind the BoJ, and ECB, and the BoE. I believe that the Federal Reserve could start such a policy régime today:

  1. Incorporate–for free–everybody with a Social Security number as a bank holding company.
  2. Let everybody then have their personal bank holding company join–again for free–the Federal Reserve system as a member bank.
  3. Offer every such personal bank holding company a permanent long-term open-ended infinite-duration zero-interest line-of-credit to draw on, up to some set maximum nominal amount.
  4. Raise the amount of the line-of-credit maximum every quarter by that quarter’s desired helicopter drop.

The same institutional forces that have, since the selection Paul Volcker, kept the Federal Reserve focused on avoiding an inflationary spiral would still bind. There would be no way to gimmick such a Social Credit system to turn it into a giveaway to the bankers. It would give the Federal Reserve the power to engage in the one policy that nearly all economists are confident will always have traction on nominal demand. Once the Federal Reserve was off and rolling, other central banks would, I think, quickly find mechanisms within their current institutional-legal competence to accomplish the same ends.

And it would, I think, make the FOMC and its members “very popular”, as Marty Feldman playing Igor in the movie Young Frankensteinsays of the monster they are creating.

Adair Turner: Are Central Banks Really Out of Ammunition?: “The global economy faces a chronic problem of deficient nominal demand…

…But the debate about which policies could boost demand remains inadequate, evasive, and confused. In Shanghai, the G-20 foreign ministers committed to use all available tools – structural, monetary, and fiscal – to boost growth rates and prevent deflation. But many of the key players are keener to point out what they can’t do than what they can….

Central banks frequently stress the limits of their powers, and bemoan lack of government progress toward ‘structural reform’…. But while some [SR measures] might increase potential growth over the long term, almost none can make any difference in growth or inflation rates over the next 1-3 years…. Vague references to ‘structural reform’ should ideally be banned, with everyone forced to specify which particular reforms they are talking about and the timetable for any benefits that are achieved…. Central bankers are right to stress the limits of what monetary policy alone can achieve…. Negative interest rates, and… yet more quantitative easing… can make little difference to real economic consumption and investment. Negative interest rates… [may have the] the actual and perverse consequence… [of] higher lending rates….

Nominal demand will rise only if governments deploy fiscal policy to reduce taxes or increase public expenditure – thereby, in Milton Friedman’s phrase, putting new demand directly ‘into the income stream.’ But the world is full of governments that feel unable to do this. Japan’s finance ministry is convinced that it must reduce its large fiscal deficit…. Eurozone rules mean that many member countries are committed to reducing their deficits. British Chancellor of the Exchequer George Osborne is also determined to reduce, not increase, his country’s deficit. The standard official mantra has therefore become that countries that still have ‘fiscal space’ should use it. But there are no grounds for believing the most obvious candidates – such as Germany – will actually do anything….

These impasses have fueled growing fear that we are ‘out of ammunition’…. But if our problem is inadequate nominal demand, there is one policy that will always work. If governments run larger fiscal deficits and finance this not with interest-bearing debt but with central-bank money…. The option of so-called ‘helicopter money’ is therefore increasingly discussed. But the debate about it is riddled with confusions.

It is often claimed that monetizing fiscal deficits would commit central banks to keeping interest rates low forever, an approach that is bound to produce excessive inflation. It is simultaneously argued (sometimes even by the same people) that monetary financing would not stimulate demand because people will fear a future ‘inflation tax.’
Both assertions cannot be true; in reality, neither is. Very small money-financed deficits would produce only a minimal impact on nominal demand: very large ones would produce harmfully high inflation. Somewhere in the middle there is an optimal policy…. The one really important political issue is ignored: whether we can design rules and allocate institutional responsibilities to ensure that monetary financing is used only in an appropriately moderate and disciplined fashion, or whether the temptation to use it to excess will prove irresistible. If political irresponsibility is inevitable, we really are out of ammunition that we can use without blowing ourselves up. But if, as I believe, the discipline problem can be solved, we need to start formulating the right rules and distribution of responsibilities…

Note also that chapter 23, “Notes on Mercantilism, the Usury Laws, Stamped Money and Theories of Under-Consumption”, of John Maynard Keynes’s General Theory of Employment, Interest and Money can be read with great profit here…

Must-read: Isaac Shapiro et al.: “It Pays to Work: Work Incentives and the Safety Net”

Must-Read: Isaac Shapiro et al.: It Pays to Work: Work Incentives and the Safety Net: “Some critics of various low-income assistance programs argue that the safety net discourages work…

…In particular, they contend that people receiving assistance from these programs can receive more, or nearly as much, from not working — and receiving government aid — than from working.  Or they argue that low-paid workers have little incentive to work more hours or seek higher wages because losses in government aid will cancel out the earnings gains…. Such charges are largely incorrect…. Adults in poverty are significantly better off if they get a job, work more hours, or receive a wage hike….

There are really only two options to lowering marginal tax rates.  One is to phase out benefits more slowly as earnings rise; this reduces marginal tax rates for those currently in the phase-out range. But it also extends benefits farther up the income scale and increases costs considerably, a tradeoff that many policymakers may not want to make. 

The second option is to shrink (or even eliminate) benefits for people in poverty so they have less of a benefit to phase out, and thus lose less as benefits are phased down. This reduces marginal tax rates, but it pushes the poor families into — or deeper into — poverty…. The ‘solution’ that some who use marginal-tax-rate arguments to attack safety net programs advance — block grants with extensive state flexibility — doesn’t resolve these difficult tradeoffs.  Instead, it passes the buck in making these trade-offs from federal decision-makers to state decision-makers.

What is the economy’s speed limit?

More on the very-sharp Ryan Cooper’s gotten one mostly wrong…

The two questions are (a) how much higher could expansionary fiscal and cooperative monetary policy permanently push annual GDP up above its current trend without triggering massive inflation, and (b) how large would the expansionary policies have to be to push the economy up that far? My guesses are 5% to (a)–that we could permanently raise annual GDP $800 billion relative to our current trajectory without triggering an upward spiral in inflation–and that we would need $300 billion more of annual government purchases. to get us there to (b).

Ryan Cooper:

Ryan Cooper: Who’s Afraid of John Maynard Keynes?: “Does the economy have room to grow?…

…Could we create many more jobs and wealth if we really tried, or have we reached the limits of what we can produce? This… is at the heart of a recent dispute among academic economists… nominally centered on Bernie Sanders’ economic plan, but also illustrates a major fault line in the practice of theoretical economics today…. [Gerald] Friedman… assumed a model in which Sanders’ huge stimulus would push the economy up to full capacity (meaning full employment and maximum output), after which it would stay permanently at a higher level…. However, the key assumption behind the mainstream model is that an economy always tends towards full employment…. [But] even by conservative assumptions we are still something like $500 billion under total economic capacity, productivity has been consistently very weak, and there is absolutely nothing on the horizon that looks like it will return us to the level of employment we had in 2007, let alone 1999…. What’s more, a Friedman-style model in which a stimulus delivered to a depressed economy returns it to full capacity, after which it stays there, is not ridiculous…

Let’s start with one of my favorite workhorse graphs:

Playfair equitable graphs

Starting in 2006 residential construction fell to the very bottom of the chart, and it has stayed there: more than 1.5%-points of GDP below its 2007-peak share of potential GDP. Starting in 2008 business investment fell to the very bottom of the chart, and then took a long tine to recover from its nadir of 2.5%-points below its 2007-peak share of potential GDP. Between 2007 and, say, the end of this year the cumulative shortfall has been some 18%-point years of residential construction not undertaken, and some 8%-point years of business investment not undertaken.

In a world with a capital-output ratio of 3 and a capital share of income of 30%, that shortfall would generate (under somewhat heroic analytical assumptions) a reduction of some 2.6%-points of GDP in the cumulative growth of potential output relative to what it would otherwise have been. That is the damage done to growth in America’s long-run economic potential from the investment shortfall since 2007. And then there is the equal or larger reduction in the growth in America’s long-run economic potential from the labor shortfall–workers not trained, workers not gaining experience, the breaking of ties to people who might hire you or might know of people who might higher you. Add up those two, and I get a 6%-point reduction in what our productive potential is relative to the pre-2008 trend. Thus 6%-points of the current gap between production now and the pre-2008 trend has been lost to the years that the locust hath eaten. And 5%-points remains as a gap that could quickly be closed by expansionary fiscal policy.

And we should close that gap. But a mere $140 billion or so of increased government spending is very unlikely to get us there. That would require a multiplier of nearly six–that only 17.5% of dollars earned as income from higher government spending leak out of the flow of spending on domestically-produced commodities either as savings or as spending on imports. And we know that it’s more like 33%-40% of dollars that so leak. That gives us a multiplier of 2.5-3. And that gives me my desire to see $300 billion more of government purchases.

What if we don’t get that extra spending? Well, perhaps we will get a residential construction boom to return us to economic potential. But don’t bet on it. Perhaps we will get an export boom to return us to economic potential. But don’t bet on it. Perhaps businesses will become wildly more optimistic about the future and a business investment boom will return us to economic potential. But don’t bet on it. Perhaps consumers will decide–after just living through 2007-2016–that they have not borrowed enough, and go on a spending spree to run their debts up further. But don’t bet on it.

No, if we don’t take active steps to boost spending, what will happen is not that economic growth will accelerate to return us to an economic potential that is itself growing at 2+%/year. What will happen is that low investment and underemployment will continue to do damage to the growth of potential and our economic potential will grow at 2-%/year until actual output is once again at potential output. But that will not be because actual has sped up its growth to catch up to potential. It will be because potential has slowed down to fall back to actual.

And the claim that in the long run (in which we are all dead) the economy’s actual level of output converges to potential? Four things can cause this to happen:

  1. Potential can slow.
  2. Something–a spending boom by somebody–can boost actual.
  3. Deflation can lead to lower interest rates as deflation carries with it a decline in the intensity of demand for a stable nominal stock of money. But in the modern world we certainly do not have inflation. We double-certainly do not have central banks that keep the nominal stock of money stable. And we triple-certainly have no room for interest rates to fall further
  4. The gap between potential and actual production can lead the central bank to lower interest rates. That cannot happen. It could lead the central bank to resort to additional extraordinary stimulative measures. But that is not going to happen either.

You may ask: Why can’t we recover more than 5%-points of the 11%-point gap between current production and what we thought back in 2007 was our trend growth destiny? If a low-pressure economy can reduce potential, why won’t a high-pressure economy increase potential? The key is easily recover. Easily. When a lack of markets or a lack of financing keeps investments that had obvious payoffs from being made, the costs are large. When a boom encourages investments to be made that look profitable only as long as the boom and the exuberance that accompanies it lasts, the long-run benefits are smaller. We as a country did benefit from MCI-WorldCom’s investments in the fiber-optic backbone in 1998-2000. But we did not benefit by nearly as much as MCI-WorldCom was calculating in its irrational exuberance bordering on fraud.

I would love to be wrong. I would love to discover that a high-pressure economy with spending more than halfway back to the pre-2008 trend would be consistent with relatively-stable inflation and with rapid-enough growth of economic potential to quickly catch us back up to that trend. But I don’t expect that that would be the case.

Must-read: Ryan Cooper: “Who’s Afraid of John Maynard Keynes?”

Must-Read: I think the very-sharp Ryan Cooper has gotten this mostly wrong. The two questions are (a) how much higher could expansionary fiscal and cooperative monetary policy permanently push annual GDP up above its current trend without triggering massive inflation, and (b) how large would the expansionary policies have to be to push the economy up that far? My guesses are 5% to (a)–that we could permanently raise annual GDP $800B relative to our current trajectory without triggering an upward spiral in inflation–and that we would need $300B more of annual government spending to get us there:

Ryan Cooper: Who’s Afraid of John Maynard Keynes?: “Does the economy have room to grow?…

…Could we create many more jobs and wealth if we really tried, or have we reached the limits of what we can produce? This… is at the heart of a recent dispute among academic economists… nominally centered on Bernie Sanders’ economic plan, but also illustrates a major fault line in the practice of theoretical economics today…. [Gerald] Friedman… assumed a model in which Sanders’ huge stimulus would push the economy up to full capacity (meaning full employment and maximum output), after which it would stay permanently at a higher level…. However, the key assumption behind the mainstream model is that an economy always tends towards full employment…. [But] even by conservative assumptions we are still something like $500 billion under total economic capacity, productivity has been consistently very weak, and there is absolutely nothing on the horizon that looks like it will return us to the level of employment we had in 2007, let alone 1999…. What’s more, a Friedman-style model in which a stimulus delivered to a depressed economy returns it to full capacity, after which it stays there, is not ridiculous…