[EiZei]

You mean flying like it did between 1940 and 1970?

[robertlagrant]

Correlation isn't causation. That time was when only the US was able to make things, as most other first world places were devastated, and also the US got to call in its incredible loans from WW2.

[refurb]

But tax revenue and government spending is even bigger than that period. So why isn't growth even higher?