Keynesians Revive a Depression Idea

http://www.bloomberg.com/news/2013-12-04/last-gasp-of-the-keynesians.html

The diagnosis? Too much saving and a lack of investment opportunities, according to Harvard University’s Summers. And with the funds rate close to zero, the Federal Reserve can’t deliver the negative real interest rates he says the economy needs unless it creates higher inflation.
So what do Summers and Krugman advocate for the secular malaise? Why, a cyclical solution: government spending on infrastructure. They want the kinds of things Keynesians typically promote to stabilize the economy during a recession to become a permanent part of the fiscal architecture.