That was used to figure out who best to target and was, importantly, incorporated into the Obama Facebook app to tell supporters which of their friends to target.
That a central bank has an explicit inflation target does not tell you how quickly it will try to bring inflation back into line when it has veered off course.
Back on the mainland, experts tell Global Times that a 2% decrease target in air pollution set by Beijing's environmental protection bureau is too low.
If the independent forecasters are right, the OBR is almost certain to tell him that he will not be able to meet his debt target - that is, to have the stock of debt falling as a share of GDP in 2015 - without additional tax rises or spending cuts, before the election.