Obviously, recent trends – a significant decline in the unemployment rate and a reasonably high and accelerating rate of economic growth – cast doubt on Krugman’s macroeconomic diagnosis (though not on his progressive politics). And the same trends have been apparent in the United Kingdom, where Prime Minister David Cameron’s government has cut the structural budget deficit from 8.4% of potential GDP in 2010 to 4.1% in 2014, while the unemployment rate has fallen from 7.9% when Cameron took office to 6%, according to the most recent data for the fall of 2014.