US National Debt - Entropy in the 21st century

Ridiculous? Incredible? Mind-boggling? Flabbergasting? Indecent? There is probably no single word to help convey all that the obese(!) US national debt figures will eventually mean to humans alive now and to several future generations. So the counter ran out of digits, did it?Where did it all go? We should surely be able to see where -- in glass fronted sky-high edifices?...