And what I am saying is that all of that debt didn't prevent growth or really cause any problems at all. If you want people to panic about the debt, saying that "in twenty years it will reach an arbitrary level that hasn't been associated with negative outcomes," isn't the best tact.
If growth stays at 2% then the interest rate projections from the CBO (publisher of this report) will be laughably wrong. Go look at the interest rates projected for 2016 in the 2010 report for a good illustration of the CBO's track record.
CBO projects entitlements to go from 13.2% of GDP to 16.9% over the next 30 years, I think we will manage.
I'm not personally advocating panic.
The CBO projections don't factor in any increased entitlements that are probable if HRC is elected and due to some fix of the Obamacare exchange mess. I wasn't relying on any CBO projection, not directly anyway.
In post-war USA and Europe the debt didn't preclude growth because there was incredible pent up demand and population growth. I'm not saying the low growth now is directly due to debt levels, but at some point, if debt keeps increasing and the growth engine can't be revved up, then your options started reducing. Low interest rates have (and appears will for the near future) helped significantly.