As late as mid-2007, to most observers, the global economic scene looked rosy. It seemed as though the laws of economics had changed: the advanced economies had rid themselves of inflation, the business cycle had been expunged and stable growth firmly established. Such was the conviction that a new economic era had arrived that in 2003 the Governor of the Bank of England described the previous decade as being NICE—a period of ‘non-inflationary consistent expansion’ (King, 2003). And in March 2007, Gordon Brown, the UK’s Chancellor of the Exchequer confidently announced that ‘‘my report to the country is of rising employment and rising investment, continuing low inflation, and low interest and mortgage rates . built on the foundation of the longest period of economic stability and sustained growth in our country’s history’’ (Brown, 2007). There was an optimistic assessment that the new economic order was being driven by new technology and new ‘creative classes’, supported by policies of financial prudence by states. Certainly, in terms of steadily rising levels of gross domestic product (GDP), especially in the USA and UK (see Figure 1), there appeared to be strong grounds for such optimism. What we now know, of course, is that this ‘long boom’ or ‘great moderation’ (Stock and Watson, 2002) was built in large part on an unsustainable growth model. Underpinning much of that growth was a dramatic rise in household debt, in the case of the USA and UK to over 100% of GDP (Figure 2). The increase in household debt was driven by a perfect storm: asset price inflation in housing and stock markets; cheap goods from China and elsewhere in the Far East; a glut of savings, in China, Japan and the oil exporters; a global financial system, which unleashed from regulation, was developing ever more ‘creative’ ways of making money (partly by funding and fuelling the rising tide of household mortgage debt); and the optimism of the ‘long boom’ itself. The simple process was that consumers in many advanced economies could borrow cheaply to spend, and the resultant increase in consumer demand stimulated economic growth. Both the USA and UK in particular experienced rapid growth from the early-1990s onwards, much of it driven by consumption. In previous periods, such a process was kept in check by the ‘balance of payments constraint’—whereby the growth of consumption would increase imports leading to a balance of payments deficit, which in turn would
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