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No Limits to Growth

Monday, August 4th, 2008

Here is a thumbnail sketch of my position on the sustainability of economic growth. What do you think is wrong with it?

(a) energy is not scarce; the historically most efficient sources (oil, coal, etc.) are;

(b) a well-functioning price system will shift energy consumption to (cleaner) alternative energy sources as prices for historical extracted sources of energy rise;

(c) the initial high price of alternative energy will temporarily slow growth, but competition and technological progress will eventually push prices below the historical trend and even asymptotically approach zero, increasing average rates of growth;

(d) environmental quality is a global public good, but;

(e) this is most likely to be secured as a consequence of growth — as a consequence of the technological innovation that both creates and is created by growth — together with the rising scarcity and prices of the most environmentally degrading energy sources.

So,

(f) there are no meaningful limits to growth from either the scarcity of energy, or from negative environmental externalities from economic production, since in the medium run, those externalities are positive.

America: Actually Quite Poor!

Monday, April 21st, 2008

I read Kevin Phillips cover article [$$$] in this month’s Harper’s, and thought he was completely crazy. First of all, I was amazed that they printed an article largely about one of my pet interests, the methodology of the Consumer Price Index, which I thought was a bit too esoteric for a general readership. But I was really baffled by Phillips’ claim that the CPI massively underestimates inflation. Phillips thinks the Boskin revisions were a big mistake, despite the fact that they were very conservative, and most economists who know about this that I have talked to think the problem goes in the opposite direction. Tyler is his usual ambassadorial self in his blog review of Phillips’ book Bad Money when he says:

Either the current market estimate of inflation is the best estimate available, or you know that it is wrong and you will be a very rich man.  I find the former scenario more plausible.

But thankfully he really lays it out there in his comments:

A lot of the Phillips book is simply economically illiterate. For sure America has its economic problems, but they are not the ones identified in *Bad Money*

Perhaps it is time to convene an Overcoming Bias colloquy about how it is that estimates of the trend in real wealth can be so massively divergent.

Fact of the Day

Monday, March 3rd, 2008

From Tyler Cowen:

When a Pole moves to London he can buy many more goods and services.  It’s a big move up in real income plus lots of new goods are introduced to the consumption basket.  So when there is lots of voluntary movement from poorer to richer regions, changes in measured income will understate some of the true gains.

The other measurement understated is the reduction in real consumption inequality.

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