Over the past two years I have written about our national debt. Earlier articles were about the "wall of debt". In an attempt to translate the utter size of our national debt, I tried to relate the amount in means other than dollars. The dollar amount is staggering and incomprehensible. The "wall of debt" consists of dollar bills, laid flat and end-to-end, stacked on top of each other and stretching around the world at the equator.