What else can we try? Central Bank Reserve as Monetary Tools?

In this interview, Prof Christiano shared his view on the development of post-2008 academic macroeconomics. We’ve asked Prof Christiano does he agree that modern macroeconomic models are too complicated for the general public, or even policymakers and if he agrees that economic models should be “simpler”. Does he think the recent revival of ISLM model a “good trend”? Should Macroeconomists hang on their faith in DSGE models? Should they explore alternative paths?