Debt is emitted to be monetized for, if we are willing to think of bureaucrats as naive, they are supposing that you are going to be able to produce that amount of richness over current levels, a growth that by definition of fiat must be paired with emission wich now has that production increment support. Of course they are not naive and they know they don't have to wait for growth, they can just print right away. In any of both cases, debt must be understood as emission.