They just make stuff up

"The Obama administration is defending its claim that the $787 billion economic stimulus plan will save or create 3.5 million jobs before 2011 even while conceding that unemployment will likely continue to rise beyond its earlier predictions. . . . The assessment was the same as what Obama's economists forecast in January, when they predicted that the economic stimulus would prevent unemployment from rising above 8 percent. But unemployment reached 8.9 percent in April and the chairwoman of the Council of Economic Advisers, Christina Romer, said over the weekend that current predictions that unemployment would reach 9.5 percent were "pretty realistic."

http://www.azcentral.com/business/articles/2009/05/11/20090511biz-StimulusJobs0511.html

Get that? The Obama economic stimulus plan was supposed to prevent unemployment from rising above 8 percent. But, unemployment reached 8.9 percent in April. Current Obama administration predictions are that unemployment would soon reach 9.5 percent. Doesn't that indicate that the Obama economic stimulus plan failed, by the Obama administration's own measure?