I was just thinking about the way that bonds are structured (Government Bonds) you buy the bond and receive two interest payments each year, one each six months and at the end of the agreement aka the maturity the initial amount aka principle is paid back. The issue is the payment is large and I don't think Governments have provision accounts so they would have to borrow to pay off the maturity. This is the issue, if the available capital diminishes as a result of a deflationary gap or the output declines will there be sufficient capital available to invest to buy the bond issuance. Surely as soon as you have long term aggregate demand decline or diminishing output this mechanism of borrowing to pay off the maturity value is not viable. In short there simply isn't enough real money to pay off the debt. The only other option is seniorage aka inflation or hyperinflation. Any thoughts.