Low growth leads to high debt, not the other way round

Charts of the day.

Two big holes have been left by the revelation of serious flaws in the Reinhart-Rogoff paper on austerity. The first is that the concept of a criticality at high levels of debt has been demolished. The original paper showed a massive drop in growth rates for countries with debt to GDP ratios over 90 per cent; that simply does not hold anymore. Insofar as the paper shows any negative association, it is linear – the step from 60 to 70 per cent is no more dangerous than the step from 85 to 95 per cent.

But there's also now an absence of notable economists claiming that high debt ratios cause low growth. In Reinhart and Rogoff's initial response to Herndon, Ash, and Pollin's paper, the authors point out that "we are very careful in all our papers to speak of 'association' and not 'causality'". That's true, but they have also not been shy about endorsing suggestions that there is an element of causality involved – and their paper has been widely misinterpreted as showing as such.

However, Arindrajit Dube presents pretty compelling evidence that the causality lies in the direction everyone but the austerians expected it to: slow growth causes high debt to GDP ratios, not the other way round. It's as simple as two charts:

 

The first image shows the correlation between the debt to GDP ratio in any given year, and the growth in the three years after it. Really low debt comes before high growth rates – but for nearly every other level of debt, the average growth in the next three years is 3 per cent.

Looking backwards, though presents a very different picture. There's strong linear relationship between low growth in the past and high debt-to-GDP ratios now.

And that's not surprising! As Dube writes:

One reason is just algebraic. The ratio has a numerator (debt) and denominator (GDP): any fall in GDP will mechanically boost the ratio. Even if GDP growth doesn’t become negative, continuous growth in debt coupled with a GDP growth slowdown will also lead to a rise in the debt-to-GDP ratio.

Besides, there is also a less mechanical story. A recession leads to increased spending through automatic stabilizers such as unemployment insurance. And governments usually finance these using greater borrowing, as undergraduate macro-economics textbooks tell us governments should do. This is what happened in the U.S. during the past recession.

The easiest way to cut the debt – in the only measure which matters, which is it in relation to the size of the economy – is to increase growth, at least back to the long-term trend. Going at it from the opposite direction, and cutting the debt in the hope it will bring growth back, is a recipe for disaster.

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Hannan Fodder: This week, Daniel Hannan gets his excuses in early

I didn't do it. 

Since Daniel Hannan, a formerly obscure MEP, has emerged as the anointed intellectual of the Brexit elite, The Staggers is charting his ascendancy...

When I started this column, there were some nay-sayers talking Britain down by doubting that I was seriously going to write about Daniel Hannan every week. Surely no one could be that obsessed with the activities of one obscure MEP? And surely no politician could say enough ludicrous things to be worthy of such an obsession?

They were wrong, on both counts. Daniel and I are as one on this: Leave and Remain, working hand in glove to deliver on our shared national mission. There’s a lesson there for my fellow Remoaners, I’m sure.

Anyway. It’s week three, and just as I was worrying what I might write this week, Dan has ridden to the rescue by writing not one but two columns making the same argument – using, indeed, many of the exact same phrases (“not a club, but a protection racket”). Like all the most effective political campaigns, Dan has a message of the week.

First up, on Monday, there was this headline, in the conservative American journal, the Washington Examiner:

“Why Brexit should work out for everyone”

And yesterday, there was his column on Conservative Home:

“We will get a good deal – because rational self-interest will overcome the Eurocrats’ fury”

The message of the two columns is straightforward: cooler heads will prevail. Britain wants an amicable separation. The EU needs Britain’s military strength and budget contributions, and both sides want to keep the single market intact.

The Con Home piece makes the further argument that it’s only the Eurocrats who want to be hardline about this. National governments – who have to answer to actual electorates – will be more willing to negotiate.

And so, for all the bluster now, Theresa May and Donald Tusk will be skipping through a meadow, arm in arm, before the year is out.

Before we go any further, I have a confession: I found myself nodding along with some of this. Yes, of course it’s in nobody’s interests to create unnecessary enmity between Britain and the continent. Of course no one will want to crash the economy. Of course.

I’ve been told by friends on the centre-right that Hannan has a compelling, faintly hypnotic quality when he speaks and, in retrospect, this brief moment of finding myself half-agreeing with him scares the living shit out of me. So from this point on, I’d like everyone to keep an eye on me in case I start going weird, and to give me a sharp whack round the back of the head if you ever catch me starting a tweet with the word, “Friends-”.

Anyway. Shortly after reading things, reality began to dawn for me in a way it apparently hasn’t for Daniel Hannan, and I began cataloguing the ways in which his argument is stupid.

Problem number one: Remarkably for a man who’s been in the European Parliament for nearly two decades, he’s misunderstood the EU. He notes that “deeper integration can be more like a religious dogma than a political creed”, but entirely misses the reason for this. For many Europeans, especially those from countries which didn’t have as much fun in the Second World War as Britain did, the EU, for all its myriad flaws, is something to which they feel an emotional attachment: not their country, but not something entirely separate from it either.

Consequently, it’s neither a club, nor a “protection racket”: it’s more akin to a family. A rational and sensible Brexit will be difficult for the exact same reasons that so few divorcing couples rationally agree not to bother wasting money on lawyers: because the very act of leaving feels like a betrayal.

Or, to put it more concisely, courtesy of Buzzfeed’s Marie Le Conte:

Problem number two: even if everyone was to negotiate purely in terms of rational interest, our interests are not the same. The over-riding goal of German policy for decades has been to hold the EU together, even if that creates other problems. (Exhibit A: Greece.) So there’s at least a chance that the German leadership will genuinely see deterring more departures as more important than mutual prosperity or a good relationship with Britain.

And France, whose presidential candidates are lining up to give Britain a kicking, is mysteriously not mentioned anywhere in either of Daniel’s columns, presumably because doing so would undermine his argument.

So – the list of priorities Hannan describes may look rational from a British perspective. Unfortunately, though, the people on the other side of the negotiating table won’t have a British perspective.

Problem number three is this line from the Con Home piece:

“Might it truly be more interested in deterring states from leaving than in promoting the welfare of its peoples? If so, there surely can be no further doubt that we were right to opt out.”

If there any rhetorical technique more skin-crawlingly horrible, than, “Your response to my behaviour justifies my behaviour”?

I could go on, about how there’s no reason to think that Daniel’s relatively gentle vision of Brexit is shared by Nigel Farage, UKIP, or a significant number of those who voted Leave. Or about the polls which show that, far from the EU’s response to the referendum pushing more European nations towards the door, support for the union has actually spiked since the referendum – that Britain has become not a beacon of hope but a cautionary tale.

But I’m running out of words, and there’ll be other chances to explore such things. So instead I’m going to end on this:

Hannan’s argument – that only an irrational Europe would not deliver a good Brexit – is remarkably, parodically self-serving. It allows him to believe that, if Brexit goes horribly wrong, well, it must all be the fault of those inflexible Eurocrats, mustn’t it? It can’t possibly be because Brexit was a bad idea in the first place, or because liberal Leavers used nasty, populist ones to achieve their goals.

Read today, there are elements of Hannan’s columns that are compelling, even persuasive. From the perspective of 2020, I fear, they might simply read like one long explanation of why nothing that has happened since will have been his fault.

Jonn Elledge is the editor of the New Statesman's sister site CityMetric. He is on Twitter, far too much, as @JonnElledge.