Policymakers initially resorted to government spending and low interest rates to boost demand. As government debt has ballooned and policy interest rates have hit rock bottom, central banks have focused on increasingly innovative policy to boost demand.
最初，政策制定者依靠政府支出和低利率来保需求。等到政府债台高筑、利率低得不能再低，各国央行又全力以赴地创新政策以促进需求。但增长依然惨淡。为什么？