Such efforts should not be constrained by national borders. Given that roughly one-third of output in advanced economies is tradable – a share that will only increase, as technological advances enable more services to be traded – the benefits of a program to channel savings into public investment would spill over to other economies.
这些方法不应该受国界的束缚。发达经济体大约有三分之一的产出是可贸易产出——这一比例只会上升不会下降，因为技术进步让更多的服务变为可贸易——将储蓄引向公共投资的计划的好处可以溢出影响其他经济体。