There is a possibility that the real interest rate that would force the market to full employment is negative, and therefore speculative bubbles and/or high inf

There is a possibility that the real interest rate that would force the market to full employment is negative, and therefore speculative bubbles and/or high inflation are the only ways we can currently achieve full employment. Paul Krugman has written a lot on this subject: http://krugman.blogs.nytimes.com/2013/11/16/secular-stagnation-coalmines-bubbles-and-larry-summers/ http://krugman.blogs.nytimes.com/2013/11/16/secular-stagnati...