[Wayne07]

The article notes that before the US got involved, the industrial demands of the war from europe drove GDP growth to 19% - that's huge and will get you out of a depression fast! Actually getting ourselves into the war, not as good economically.

This is the corollary of the broken window theory. If you break someone else's window, and you are the only window maker, it helps you. Is there a net overall economic gain, no.

[CGalen]

The “Broken Window Theory” ALWAYS destroys wealth, and it results in a lower standard of living. There is nothing good about destruction.