cherdano, on 2011-June-07, 21:31, said:
No, this is just a side point. My main point is that in the case of a metro line, a "benevolent monopolist" is able to create a huge amount of value that is not measured by the increase in GDP. That's what I meant with "consumer surplus". However, this cooperative monopolist needs to run the metro line at a deficit, and essentially only the government is in the position to be able to do that.
Ah, ok, I see. Yes, a government can do this. My intuition would be that the consumer surplus will get spent else where, so the benefit will probably turn up in GDP somewhere, in the same way that a more efficient transport infrastructure tends to help economic activity.
cherdano, on 2011-June-07, 21:31, said:
This is really a separate discussion. But all serious economists seem to agree that a modest structural deficit is beneficial for the economy. It increases the availability of money, which encourages economic activity. (That's why the Fed is targeting a non-zero level of inflation.) Since not running a deficit is a drag on economic growth, the logic "if the government hadn't borrowed 2 Billion in 2000, it could spend 2 Billion * (interest rate)^10 times more in 2010" does not hold.
There seem to be several points here. I think everyone agrees about the benefits of a mildly inflationary economy. However, it does not follow that borrowing is a sensible tool to achieve this. Afterall, a government can inflate the economy easily by "printing" money. It feels like borrowing from the private sector is inflationarily neutral since, in general, the private sector will find a way to put their capital to use anyway. This means that government borrowing is (relatively) inflationary only if the private sector was planning to sit on the money. Further, by printing enough to put inflation at 3-4% the government gets the best of both worlds, since it makes it expensive to sit on capital and therefore forces the private sector to invest even without borrowing money.
Further, several well run advanced economies run surpluses routinely, eg Australia. I think if you sensibly manage a sovereign wealth fund you can achieve worth objectives while saving up money for a rainy day, eg, buying up land in cities to create parks, and prevent over development which in the future could be sold to business to raise funds. I do not see that such a scheme necessarily represents economic drag. It is true that one can sustain a small deficit forever provided that one has robust growth, but I am not at all convinced that this is a better strategy than a (cyclically) balanced budget.
The physics is theoretical, but the fun is real. - Sheldon Cooper