That does not mean that the US should maintain the discount rate close to zero and run up government debt indefinitely. Once the economy starts growing again, interest rates will rise – perhaps precipitously, if the accumulated debt is too large.
这并不意味着美国应该维持接近于零的贴现率并无限制增加政府债务。一旦经济开始重新增长，利率就会升高——如果累积债务太大的话，甚至可能会陡然增加。但是，就算利率上升会对经济复苏不利，效应也要比财政紧随温和得多。