Paul Krugman expands on the nature of the liquidity trap and why more of the world economy might be in this situation than is commonly supposed. His opening paragraph raises an interesting question for A2 economists - does a liquidity trap encourage protectionist policies and heighten the risks of a period of prolonged de-globalisation?

“Being in a liquidity trap reverses many of the usual rules of economic policy. Virtue becomes vice: attempts to save more actually make us poorer, in both the short and the long run. Prudence becomes folly: a stern determination to balance budgets and avoid any risk of inflation is the road to disaster. Mercantilism works: countries that subsidize exports and restrict imports actually do gain at their trading partners’ expense.”

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