Nobody said it was unsustainable. The point is that if you have to borrow almost 4% of your GDP to generate growth of only 3% of GDP, your underlying economy is

Nobody said it was unsustainable. The point is that if you have to borrow almost 4% of your GDP to generate growth of only 3% of GDP, your underlying economy is not performing strongly enough to support itself. That we can’t escape deficit-fueled growth in a supposedly “booming economy” is a scary sign for future economic hiccups.