Even so, say critics, the project could have been tackled more riskily, but cheaper.

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After a meeting with parliamentary leaders, Mr Yushchenko riskily, but successfully, submitted his candidate to another ballot.

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It is also unaffected by investment behaviour, creating an incentive to invest riskily.

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More directly, higher status itself protects people's health, he argues, not just by reducing their propensity to behave riskily, but also by changing their body chemistry in ways that protect them against disease.

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In the long term, central banks' willingness to broaden liquidity support during crises may induce banks to behave more riskily (a temptation that will need to be countered with more effective rules on banks' own liquidity).

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