We know as a matter of principle that these concerns are misplaced: if there were a shortage of savings, the economy wouldn’t be depressed. Indeed, one way to think about our current problem is that the world as a whole wants to save more than it’s willing to invest.

据于理吾知彼忧心之枉置矣：若储蓄不足，则经济必不至低落。质言之，可循此一路径以解当下之惑：举世欲储蓄之心甚于欲投资之心。

But it’s always nice to have some real-world data illustrating a principle. From Brad Setser, private and public borrowing in America, as a percentage of GDP:

可得阐明原理之真实世界之数据，恒为幸事。据Brad Setser君，美国公私之债，以占GDP之比计，吾知：

We’re actually borrowing less from foreigners than we were before