Hi Bill, I can only tell you what I read. The difference "this time" is the size and nature of the existing US debt. Back-a-way, the US debt was held in long term (like 30year) gov. bonds that were held by US citizens. Today, the debt is all external (T-bills held by countries like China, Korea, oil nations) and the bills are mostly short term, like 3 years, so regular renewals. The US already can't pay the interest on the existing debt. They currently just issue more T-bills with later exp. dates. Now you're exactly right, for as long as the China's etc are happy to give the US their hard earned money with no hope of it being returned, the game goes on. But, the general feeling is, when the lending nations work out it's a "one way street" either they will stop, or IR on T-bills will skyrocket. And you're right again, the only other source is the printing press. The amounts are, as you hear, trillions. The economists then say, you start printing USD trillions, in order to 1)pay the int. and 2)fund the new Obama deficits, the US dollar goes to crap and hyper-inflation sets in...like Zimbabwe who just issued a 100trillion note. So, yes, you're right, the printing press will give the US a "high" for a while, but with a nasty headache in the morning.
LL