“…But since these papers do not permit state-contingent financial contracts, the extent to which the underlying externality drives their results is unclear. By contrast, in existing models with state-contingent contracts (Kehoe and Levine, 1993;Krishnamurthy, 2003;Gai et al, 2006;Lorenzoni, 2008), investment projects are never abandoned and crises never occur. Moreover, these papers do not consider the effects of financial innovation or changes in macroeconomic volatility.…”