It is the surprise factor - the shock evinced by Mr Dimon - that will reignitethedebate about whether regulators need to take more decisive action to curb the complexity of investment banks, to better prevent this kind of accident.
The effort to reignitethe republican debate may have little immediate impact politically, however, not least because Mr. Turnbull is a rare supporter within the ranks of the Liberal Nationals, which lead pre-election opinion polls by a wide margin.