So let me move forward 50 years to the events of 2008, and describe the nature of the financial crisis, the steps that governments and central banks have taken to deal with it, and, most important, the implications of recent events for the UK and world economies. Since August 2007, the industrialised world has been engulfed by financial turmoil. And, following the failure of Lehman Brothers on 15 September, an extraordinary, almost unimaginable, sequence of events began which culminated a week or so ago in the announcements around the world of a recapitalisation of the banking system. It is difficult to exaggerate the severity and importance of those events. Not since the beginning of the First World War has our banking system been so close to collapse. In the second half of September, companies and non-bank financial institutions accelerated their withdrawal from even short-term funding of banks, and banks increasingly lost confidence in the safety of lending to each other. Funding costs rose sharply and for many institutions it was possible to borrow only overnight. Credit to the real economy almost stopped flowing. In financial markets, confidence in others fell to a point where investors sought refuge in government instruments such as US Treasury Bills, which at one point yielded a negative return. Central banks around the world were providing enormous amounts of liquidity to some institutions while at the same time taking large deposits from others. Eventually, on 6 and 7 October even overnight funding started to dry up.
But in the light of rising defaults and falling house prices – first in the United States and then elsewhere – investors reassessed the risks inherent in these securities. Perceived as riskier, their values fell and demand for securitisations dwindled. For the same reason, the value of banks’ mortgage books declined. Banks saw the value of their assets fall while their liabilities remained unchanged. The effect was magnified by the very high levels of borrowing relative to capital (or leverage) with which many banks were operating, and the fact that banks had purchased significant quantities of securitised and more complex financial instruments from each other. Not only were these assets difficult to value, but the distribution of losses across the financial system was uncertain. Banks’ share prices fell. Capital was squeezed. Markets were sending a clear message to banks around the world: they did not have enough capital. At the Annual Meetings of the IMF and World Bank in Washington ten days ago, the message was reinforced by our colleagues from Japan, Sweden and Finland, who, with eloquence and not a little passion, reminded those present of their experience in dealing with a systemic banking failure in the 1990s. Recapitalise and do it now was the lesson. Recapitalisation requires a fiscal response, and that can be done only by governments. Confidence in the banking system had eroded as the weakness of the capital position became more widely appreciated.