In tough times, politicians squabble. Out of this heat, light should emerge. Alas, it is not doing so, at least in the UK. The utterances of leading Labour and Conservative politicians do not explain how the UK economy is to emerge from its current quagmire.

The UK has proved horrifyingly vulnerable to a financial crisis that has cut off funding from abroad. But why is it so vulnerable? The answer from David Cameron, the leader of the opposition, is simple: “We’re in this mess because of too much debt – too much government debt; too much corporate debt; too much personal debt; and it becomes clearer all the time that the scale of Britain’s debts puts us in a much weaker position than other countries.”