The often-fuzzy line between income from capital and labour means a large gap in relative tax rates breeds tax avoidance.

ECONOMIST: Free exchange: Zero-sum debate | The

On the other hand, questions about, say, the size of the state or the relationship between capital and labour are no longer exciting at all.

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Both depend on commodity exports, both trade heavily within the Asia-Pacific region and there is (almost) free movement in trade, labour and capital between the two countries.

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Yet the strikes do not reflect an unbridgeable divide between capital and labour: rather, nearly all South Koreans are capitalists, and many of the strikers had voted for Mr Lee.

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The team identified a clear and significant association between investments in human capital in each period and a country's subsequent growth and labour productivity.

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