WHAT is the most important number in global economics? Judging by the volume of commentary it excites, America’s monthly payrolls report (released on October 7th) might qualify. Other contenders include the oil price or the dollar’s exchange rate against the euro, yen or yuan. These numbers all reflect, and affect, the pace of economic activity, with immediate consequences for bond yields, share prices and global prosperity—which is what economics is ultimately all about.
But if global prosperity is the ruling concern of economics, then perhaps a more significant number was released on October 2nd by the World Bank. It reported that 767m people live in extreme poverty, subsisting on less than $1.90 a day, calculated at purchasing-power parity and 2011 prices. The figure is not up-to-the-minute: such is the difficulty in gathering the data that it is already over two years out of date. Nor did the announcement move any markets. But the number nonetheless matters. It represents the best attempt to measure gains in prosperity among the people most in need of them.
The latest figures should arouse mixed feelings. They are simultaneously a cause for...Continue reading
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