On Friday, Chair Yellen delivered a speech at the Boston Federal Reserve Conference, “At The Elusive Great Recovery: Causes and Implications for Future Business Cycle Dynamics.” Her speech was titled, “Macroeconomic Research After the Crisis.” My short response to the questions posed by Janet Yellen have been answered by many NON-FED economists and most prominently by Richard Koo in his great work on BALANCE SHEET RECESSIONS. My sense is that the FED is an insular organization and pays little note of those outside its Ivory tower. Yellen’s second question was: “Whether individual differences within broad groups of actors in the economy can influence aggregate economic outcomes–in particular, what effect does heterogeneity have on aggregate demand?” Now, GET REALLY SCARED: