First of all, thanks to both of you for taking the time to write these explanations, and for doing so in idiot-proof terms!
That's all very well, but it's not in the question if you can't afford the repayments. Even if we accept that government debt isn't really going to be paid off - apparently we're only just considering paying off some of our debt from the collapse of the South Seas bubble - the interest payments are still going to cut into the government's spending power in every year to follow. That means that in order to keep the same level of public services, they're going to have to raise taxes, or else there will have to be cuts. If that's going to cost more than the ongoing maintenance (or, as happens now, simply squeezing those affected by the 'leak' harder, by taking money away from welfare, hospitals and prisons) neither of those are possible or palatable, the roof's staying leaky.
EDIT 2: From reading a bit more of the book below (I sense that today is going to be a school day...) what will happen if the government borrows at a greater rate of interest than the rate of increase in GDP (which is, I think, essentially the same comparison that I made earlier), there will be inflation. So the government will continue to be able to spend in order to pay pensions, welfare and wages, but the savings that people have will decrease in real terms, as will any revenues held by private companies and devolved governments. That's bad if it happens too much, which is why governments want to reduce the deficit. Is that correct? So essentially it's a means of ensuring that a greater share of the money rests with savers, companies and privately-employed people than with unemployed and otherwise publicly-funded people?
EDIT: Another question, I'm afraid. I'm reading over the much-praised Seven Deadly Innocent Frauds book, which is currently explaining why the US government can never run out of money. In that case, why did they default on their loan payments a year or so ago? And does that same logic (that the government is simply a score-keeper, and only taxes people to ensure that it destroys an equivalent amount of money when it puts more into circulation) apply to (say) France, which is part of a multinational currency?
As an extension of that, I suppose the argument only holds if the government controls the mint? So it wouldn't apply to a system using (eg) shells as money?
The roof on your house starts to leak. You can borrow the money to have the roof replaced, and you won't have to do it again for a very long time. Or you can continually repair the damage to the inside of your house that the leak is causing. Which makes more sense?
That's all very well, but it's not in the question if you can't afford the repayments. Even if we accept that government debt isn't really going to be paid off - apparently we're only just considering paying off some of our debt from the collapse of the South Seas bubble - the interest payments are still going to cut into the government's spending power in every year to follow. That means that in order to keep the same level of public services, they're going to have to raise taxes, or else there will have to be cuts. If that's going to cost more than the ongoing maintenance (or, as happens now, simply squeezing those affected by the 'leak' harder, by taking money away from welfare, hospitals and prisons) neither of those are possible or palatable, the roof's staying leaky.
EDIT 2: From reading a bit more of the book below (I sense that today is going to be a school day...) what will happen if the government borrows at a greater rate of interest than the rate of increase in GDP (which is, I think, essentially the same comparison that I made earlier), there will be inflation. So the government will continue to be able to spend in order to pay pensions, welfare and wages, but the savings that people have will decrease in real terms, as will any revenues held by private companies and devolved governments. That's bad if it happens too much, which is why governments want to reduce the deficit. Is that correct? So essentially it's a means of ensuring that a greater share of the money rests with savers, companies and privately-employed people than with unemployed and otherwise publicly-funded people?
EDIT: Another question, I'm afraid. I'm reading over the much-praised Seven Deadly Innocent Frauds book, which is currently explaining why the US government can never run out of money. In that case, why did they default on their loan payments a year or so ago? And does that same logic (that the government is simply a score-keeper, and only taxes people to ensure that it destroys an equivalent amount of money when it puts more into circulation) apply to (say) France, which is part of a multinational currency?
As an extension of that, I suppose the argument only holds if the government controls the mint? So it wouldn't apply to a system using (eg) shells as money?