Using Geithner's logic, there is no escape from an ever-larger national debt. Every year, the ceiling will have to be raised. Medicare is in the red. Social Security is in the red. Combined, they are about $100 trillion in the hole, according to some estimates.
Who is going to buy this Treasury debt as it rolls over every 50 months (today's average maturity)? For how much longer? This money will have to come from somewhere. It will come from money that might otherwise be invested in the private sector.