So what economic system did we employ during the post-war boom
Voodoo economics haven't served our nation well. Monetarism failed. Reaganomics failed. Trickle-down & supply-side economics as a whole have failed our nation. This latest round of tax cuts really is pure Keynesian in form. Like I stated in another thread, it will work, and probably work well, but it is unfunded. And for Keynesian economics to work, we must balance the budget when the economy improves, to pay off the deficits of the recession.
Higher taxes on the wealthy aren't punishments. They are necessities.