Western donors made up much of the aid gap (Mongolians get among the highest number of aid dollars per head in the world), but to dismayingly small effect.

ECONOMIST: Nomadism in Mongolia

Contrary to received wisdom, slashing the rich world's trade-distorting subsidies has a relatively small effect on poor countries.

ECONOMIST: Weighed in the balance

Unfortunately, once you sort through how much more China can actually spend in the near term, and take into account that--at market exchange rates--China's economy is only around 6% of world gross domestic product, the effect on global growth will be small.

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The price reduction effect of our oil production is spread across the entire world and is thus pretty small.

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