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What is mankind’s greatest invention? Ask people this question and they are likely to pick familiar technologies such as printing or electricity. They are unlikely to suggest an innovation that is just as significant: the financial contract. Widely disliked and often considered grubby, it has nonetheless played an indispensable role in human development for at least 7,000 years.
At its core, finance does just two simple things. It can act as an economic time machine, helping savers transport today’s surplus income into the future, or giving borrowers access to future earnings now. It can also act as a safety net, insuring against floods, fires or illness. By providing these two kinds of service, a well-tuned financial system smooths away life’s sharpest ups and downs, making an uncertain world more predictable. In addition, as investors seek out people and companies with the best ideas, finance acts as an engine of growth.
Yet finance can also terrorise. When bubbles burst and markets crash, plans paved years into the future can be destroyed. As the impact of the crisis of 2008 subsides, leaving its legacy of unemployment and debt, it is worth asking if the right things are being done to support what is good about finance, and to remove what is poisonous.
History is a good place to look for answers. Five devastating slumps—starting with America’s first crash, in 1792, and ending with the world’s biggest, in 1929—highlight two big trends in financial evolution. The first is that institutions that enhance people’s economic lives, such as central banks, deposit insurance and stock exchanges, are not the products of careful design in calm times, but are cobbled together at the bottom of financial cliffs. Often what starts out as a post-crisis sticking plaster becomes a permanent feature of the system. If history is any guide, decisions taken now will reverberate for decades.