cf. Paul Krugman's point of view: Secular Stagnation, Coalmines, Bubbles, and Larry Summers, The New York Times, November 16th, 2013, retrieved November 28th, 2013: „[…] a situation in which the 'natural' rate of interest – the rate at which desired savings and desired investment would be equal at full employment – is negative. […] when looking forward you have to regard the liquidity trap not as an exceptional state of affairs but as the new normal.“ cf. also: Larry Summers at IMF Economic Forum, Nov. 8, YouTube, published on November 8th, 2013, retrieved on November 28th, 2013: Larry Summers said there: „imagine a situation where natural and equilibrium interest rate have fallen significantly below zero.“
cf. Paul Krugman's point of view: Secular Stagnation, Coalmines, Bubbles, and Larry Summers, The New York Times, November 16th, 2013, retrieved November 28th, 2013: „[…] a situation in which the 'natural' rate of interest – the rate at which desired savings and desired investment would be equal at full employment – is negative. […] when looking forward you have to regard the liquidity trap not as an exceptional state of affairs but as the new normal.“ cf. also: Larry Summers at IMF Economic Forum, Nov. 8, YouTube, published on November 8th, 2013, retrieved on November 28th, 2013: Larry Summers said there: „imagine a situation where natural and equilibrium interest rate have fallen significantly below zero.“
