Inside the Adam Smith Institute















Why golf is a rubbish sport





My word, you mean competition actually works?











So just what is slow economic growth then?

This is slightly worrying:



Not the predictions themselves, which come from this OECD report, but the interpretation that is put upon them. For it appears that Paul Mason, supposedly one of those employed to explain the world to us, is incapable of actually reading a report.

On the inequality point he’s missed the crucial qualifier: “in-country” inequality. The report is actually telling us that the currently poor countries are going to catch up with the currently rich ones and that when they do, when they join us at the technological frontier, then their growth will be lower than it is during the current catch up phase.

That is, the prediction is that the vast gulfs of inequality between those living on a $1 a day and ourselves will be closed: yet Mason is concerning himself with that trivial 30% rise in inequality amongst ourselves, the already rich. It’s absurd to be worrying that in-country gini will rise from, say, 0.30 to 0.39 while not celebrating the collapse of the global gini from 0.80 to 0.40 (made up numbers just for illustration). At least it’s absurd if inequality is one of those things that you want to worry about.

There’s another misunderstanding there, one which anyone who has actually read Piketty should understand for he explains it very well. Gross GDP growth, the size of the entire economy, is driven by two different things. One is the expansion of the population that is producing that GDP. The other is the efficiency with which each person is contributing to that GDP. The report is stating that the entire globe is just about to finish going through the demographic transition, as the UN and everyone else assumes it is. Thus population growth will not be contributing to growth after some few decades of the future.

3% (or 2.7%) growth without the demographic effect is not low or slow growth: this is fast growth. The economy doubles every 25 years or so but over the same number of people meaning that per capita GDP doubles every 25 years. This is not an historically slow level of per capita GDP growth. This is actually rather fast.

It’s not the specific predictions that worry at all: it’s that someone supposedly employed to explain such matters to us doesn’t seem to understand the points being made. How did we end up in this situation?


Well, yes, quite.

Voxplainer on Scott Sumner & market monetarism

I have to admit that I usually dislike Vox. The twitter parody account Vaux News gets it kinda right in my opinion—they manage to turn anything into a centre-left talking point—and from the very beginning traded on their supposedly neutral image to write unbelievably loaded “explainer” articles in many areas. They have also written complete nonsense.

But they have some really smart and talented authors, and one of those is Timothy B. Lee, who has just written an explainer of all things market monetarism, Prof. Scott Sumner, and nominal GDP targeting. Blog readers may remember that only a few weeks ago Scott gave a barnstorming Adam Smith Lecture (see it on youtube here). Readers may also know that I am rather obsessed with this particular issue myself.*

So I’m extremely happy to say that the article is great. Some excerpts:

Market monetarism builds on monetarism, a school of thought that emerged in the 20th century. Its most famous advocate was Nobel prize winner Milton Friedman. Market monetarists and classic monetarists agree that monetary policy is extremely powerful. Friedman famously argued that excessively tight monetary policy caused the Great Depression. Sumner makes the same argument about the Great Recession. Market monetarists have borrowed many monetarist ideas and see themselves as heirs to the monetarist tradition.

But Sumner placed a much greater emphasis than Friedman on the importance of market expectations — the “market” part of market monetarism. Friedman thought central banks should expand the money supply at a pre-determined rate and do little else. In contrast, Sumner and other market monetarists argue that the Fed should set a target for long-term growth of national output and commit to do whatever it takes to keep the economy on that trajectory. In Sumner’s view, what a central bank says about its future actions is just as important as what it does.


In 2011, the concept of nominal GDP targeting attracted a wave of influential endorsements:

Michael Woodford, a widely respected monetary economist who wrote a leading monetary economics textbook, endorsed NGDP targeting at a monetary policy conference in September.

The next month, Christina Romer wrote a New York Times op-ed calling for the Fed to “begin targeting the path of nominal gross domestic product.” Romer is widely respected in the economics profession and chaired President Obama’s Council of Economic Advisors during the first two years of his administration.

Also in October, Jan Hatzius, the chief economist of Goldman Sachs, endorsed NGDP targeting. He wrote that the effectiveness of the policy “depends critically on the credibility of the Fed’s commitment” — a key part of Sumner’s argument.

But read the whole thing, as they say.
