The closest thing to a knife fight has been Mr Gingrich's portrayal of Mr Romney as a callous wrecker of humble livelihoods.

ECONOMIST: Lexington

Until a decade ago America's medical profession had indeed been laggard and callous in providing pain relief to patients.

FORBES: Fact and Comment

But it is a measure of how little inclined the leadership is to trust the market's callous hand operating through such things as mergers, sales and, especially, bankruptcies.

ECONOMIST: Out of the shadow of Deng