We have had regulations, public investment and macroeconomic management to varying degrees throughout American history.

纵观美国历史，我们经历过不同程度的监管、公共投资和宏观经济管理。

We have always used regulation, public investment and macroeconomic management to make our economy work, but we've done so sporadically and often weakly because we've told ourselves a different story about how the economy works.

我们一直都是通过监管、公共投资和宏观经济管理来让经济运转，但我们只是偶尔这么做，而且通常力度很小。因为关于经济如何运转我们告诉自己的是另一个故事。