A year ago, Brazil, Russia, India and China were the darlings of the world economy. Today, Brazil is barely growing, Russia is struggling and India and China are on course for their lowest growth in a decade. Although they are as different as they are similar, all four of the original Bric countries have contrived to stumble simultaneously. The lessons are that microeconomics can matter as much as macroeconomics – and that belonging to a prestigious economic club is hazardous.

The Brics, and emerging economies generally, deserve enormous credit for their macroeconomic management. In the 1970s and 1980s, one in two emerging and developing economies had double-digit inflation. Today, fewer than one in five do. As recently as the 1990s, the median emerging economy had public debt to gross domestic product of more than 65 per cent. In the past two years, the median has been below 40 per cent. Add in bulging foreign exchange reserves, debt denominated in domestic currency rather than dollars and (with China the big exception) flexible exchange rates, and the hype surrounding emerging economies seems almost reasonable.

Since the emerging market crises of 1997-2002, these strong macro foundations have delivered extraordinary performance. As the IMF noted in its October World Economic Outlook, the past decade witnessed the first time that emerging economies enjoyed longer expansions and shorter downturns than advanced economies. When the global financial crisis hit, emerging economies’ budget deficits were small so the fiscal counterattack could be forceful. Inflation was quiescent so credit could be eased safely. In the 1990s, emerging economies that cut interest rates were punished with capital flight and currency collapse, triggering the bankruptcy of businesses with debts in dollars. This time, ample foreign exchange reserves offset capital flight and the shift away from dollar borrowing insured companies against depreciation.