The concept of secular stagnation, first propounded by Alvin Hansen in the 1930s, has enjoyed an academic – and mainstream – resurrection thanks to Lawrence Summers (2014, 2016), who first advanced the theory as an explanation for the subdued recovery and anaemic growth prospects of advanced economies. A surprising criticism recently came from Joseph Stiglitz (August, 2018), who believes that the theory offers a convenient escape away from assuming responsibility for failed policy during the crisis. An acrimonious debate between Summers and Stiglitz followed.
On the face of it, Summers – and Gauti Eggertson – are right: the modern theory of secular stagnation does see a central and substantial role for fiscal policy. The problem, however, lies in the fact that a short-term fix for aggregate demand shortfalls – fiscal policy – is being advanced as a long-term solution of the problem of reduced growth prospects. The central question of what drives investment in a capitalist economy is not addressed.Read More »