What has the market turmoil of August been telling us? The answer, I suggest, is three big things: first, the debt-encumbered economies of the high-income countries remain extremely fragile; second, investors have next to no confidence in the ability of policymakers to resolve the difficulties; and, third, in a time of high anxiety, investors prefer what are seen as the least risky assets, namely, the bonds of the most highly rated governments, regardless of their defects, together with gold. Those who fear deflation buy bonds; those who fear inflation buy gold; those who cannot decide buy both. But few investors or corporate managers wish to take on any longer-term investment risks.

Welcome, then, to what Carmen Reinhart, senior fellow at the Peterson Institute for International Economics in Washington, and Harvard’s Kenneth Rogoff call “the second great contraction” (the Great Depression of the 1930s being the first). Those less apocalyptic might call it the “Japanese disease”.

Many ask whether high-income countries are at risk of a “double dip” recession. My answer is: no, because the first one did not end. The question is, rather, how much deeper and longer this recession or “contraction” might become. The point is that, by the second quarter of 2011, none of the six largest high-income economies had surpassed output levels reached before the crisis hit, in 2008 (see chart). The US and Germany are close to their starting points, with France a little way behind. The UK, Italy and Japan are languishing far behind.