I'll add that debt is the integral (well sum) of deficits. deficit/GDP, or deficit/revenue ($4T/$3T = 33%? is that right?) is far more worrying than just the debt/GDP.
However, I will concede that GDP as a measure of productivity is hard to measure, easy to manipulate, and less effective than other measures of productivity.
However, I will concede that GDP as a measure of productivity is hard to measure, easy to manipulate, and less effective than other measures of productivity.