Paul Krugman doubled down on criticism of Ben Bernanke on Sunday, telling ABC's "This Week" that the Fed Chairman has "been assimilated by the Borg." “I think what’s happened to Bernanke, as they say, he’s been assimilated by the Borg," he said. "He’s become more concerned, probably unconsciously, with defending the Fed’s institutional safety, because it’s the apostle of price stability, than with doing whatever he can to get this economy moving.