A Missing Macroeconomic Playbook?

I am reminded of the extraordinary gulf between economics as I see it and economics as at least some others see it when I read things like Narayana Kocherlakota's opening paragrapb:

Modern Macroeconomic Models as Tools for Economic Policy: I believe that during the last financial crisis, macroeconomists (and I include myself among them) failed the country, and indeed the world. In September 2008, central bankers were in desperate need of a playbook that offered a systematic plan of...