It really clicked for me when I summarized my Freeman article this way:
If an imperialist government paid for popular spending programs by levying a tax not on its own citizens but on a conquered land, the scheme would of course be a gigantic theft working across space and through the currency markets. Deficit finance is similar, working across time and through the bond markets. It allows today’s citizens to pay for government goodies by levying a tax on unborn generations who have no say in the political decision.
Learn it, live it, love it.