We contribute to a recent literature on the normalization, calibration and estimation of CES production functions. The problem arises because CES ‘share’ parameters are not in fact shares, but depend on underlying dimensions—in other words they are ‘dimensional constants’. It follows...

This paper revisits a widely adopted approach to robust decision making developed by (Hansen and Sargent, 2003) and (Hansen and Sargent, 2008)--henceforth HS--and applies it to monetary policy design in the face of model uncertainty. We pay particular attention to two issues: first, we...