話題となっているクリストファー・シムズのジャクソンホールの論文から、第5節を引用してみる。 V. WHY HAS MONETARY POLICY BEEN INEFFECTIVE IN THE US, EUROPE AND JAPAN? The general explanation for the low interest rates, large central bank balance sheets, and low inflation in these countries is the failure of effective fiscal expansion to take over from monetary policy as the zero lower bound was approached. Of course in these countries deficits