The papers in this fine volume, assembled by editors John Cochrane and John Taylor, were written “to help inform an important review of monetary policy undertaken by the Federal Reserve in 2019.”1 In the short time since the volume was finalized, COVID-19 has exploded onto the world scene, causing vast medical harm and heartache as well as financial and economic disruption of historic proportions. In addition, the Fed has unveiled major portions of the results of its framework review.