Don’t be ridiculous:

Economics made Paul Krugman famous. Punditry has made him a celebrity, famous for being famous. But Krugman aspires to be long remembered, and, in this respect, John Maynard Keynes is the gold standard. Keynes left his mark in three distinct ways: through the power of ideas, through the art of public persuasion, and through the shaping of historic changes. This last is denied to all but those who find themselves at the right place at an epochal time. But on the first two scores, at least, Krugman may well become the first person outside the field of literature to win both the Nobel and Pulitzer Prizes, the acme of achievement in academics and journalism.

Then again, they did give one to Maureen Dowd…