By late morning in New York on Monday, the price of oil had climbed by 20 per cent in barely five days and scarcely anyone had noticed. Then it went into overdrive, hitting $130 at one point before settling at $120.92. Last Tuesday, it traded at $90.51 – a swing of 44 per cent from bottom to top.

This had little to do with the supply of and demand for oil and everything to do with the fallout from the “Paulson plan” – the proposal to risk $700bn of US public money in a bail-out of toxic securities held by banks.