In its October 2012 World Economic Outlook, the IMF admitted that, “fiscal multipliers were underestimated across the world.” In plain English: the forecasters underestimated the extent of spare capacity and hence the scope for fiscal expansion to raise output.
而且英国不是“一个人”在战斗。在2012年10月的《世界经济展望》（World Economic Outlook）中，IMF承认“财政乘数被全世界所低估。”用大白话说就是：预测者低估了闲置产能的程度，因此也低估了财政扩张可能带来的产出增长。