[The mathematical logic underpinning the plan is already stirring controversy. Hubbard and Friedman are making a huge and controversial macroeconomic bet that deficits don't matter, effectively reversing a decade of policymaking.] This Administration is trying to change the whole intellectual basis for fiscal policy that Alan Greenspan enforced when deficits were large in the early 1990s, ... We got fiscal discipline through the idea that deficits matter. That's been flipped on its head. Mark Zandi