September 06, 2002
Think Analytically!

Think Analytically!

I remember one day during the first Clinton Administration when Joe Stiglitz came into the room to chair a meeting, looked around, noticed that--so far--only economists had shown up, and announced that nobody who did not have a Ph.D. in economics would be allowed to speak at the meeting. (Do I need to point out that that Joe was making a joke?)

He was. All of us got it. All of us cheered and applauded.

We did so not because we Clinton-era economists all agreed on all the issues--anybody with half an ear to the ground would know that we did not. We did so because we had found that it was possible to make intellectual and policy progress in discussions with economists because we had all been trained to think analytically: to break the issue down into background assumptions about the world, beliefs about the principal causal mechanisms, and claims about the likely effects of different policies on those chains of cause-and-effect. When we disagreed--as we often did--we could quickly ascertain where and why, and then agree on how to go hunting for pieces of information that would help resolve the disagreement. This was in striking contrast with our collective experience with lawyers or media types, who would be vague about cause and effect, or shift premises in the middle of a meeting when they saw that making different background claims about the world would provide a smoother road to their desired conclusion.

I am thinking about this now because I am reading an article by Noam Scheiber in the September 9, 2002 New Republic. He has a bone to pick with me and my belief that the Federal Reserve should be following a lower interest rate more expansionary policy. But he does not think analytically. So I cannot figure out what his beef is.

The title of the article--"Less than Zero: Why Deflation Isn't a Problem"--tells me that his complaint is that more expansionary policy is unnecessary: I think it would be good because I think deflation might become a problem in a year or two, but if deflation isn't a problem, I am wrong. So far, so good. But before the end of the second paragraph, I am told that "deflation may be a concern" but "lowering interest rates... won't do much." So which is it?

I think that it is the title that is the misstep--that Scheiber thinks that deflation is a potential problem, but also thinks that lower interest rates won't do much to help prevent or stop it. Why not? I think the answer is that Scheiber believes that lowering interest rates won't do much to stimulate business spending on investment: in Scheiber's view, depressed conditions in many key industries--autos, audio equipment, semiconductor equipment, and sporting goods--mean that no CEO who is not an idiot would boost his company's spending on investment no matter how low the interest rate. So by the end of paragraph eight, Scheiber seems to be arguing that: (a) deflation may be a threat, (b) a good way to neutralize this potential threat is to boost business investment spending, (c) in normal times lowering interest rates is a good way to boost business investment spending, but (d) demand is already so low relative to supply in key industries that the normal interest rate medicine won't work.

But is this an argument that the Federal Reserve shouldn't have lowered interest rates? It seems not. Scheiber's is an argument that the Federal Reserve should have lowered interest rates more last year. Scheiber's is an argument that the Federal Reserve's lowering interest rates in the future will be ineffective. It is an argument that returning the economy to full employment will require fiscal policy--spending increases or tax cuts not targeted on the low-marginal-propensity-to-consume rich. But it is not an argument that lowering interest rates is a bad thing, or an argument that deflation is not a threat. The main thrust of the column simply does not connect up to Scheiber's claim that the Federal Reserve shouldn't have lowered--and shouldn't lower--interest rates.

So is there any reason to think that lowering interest rates would be a bad thing? There is a hint in one single sentence:

Meanwhile, in an industry like telecom, where there is too much capacity... lowering interest rates could exacerbate the situation by keeping marginal companies afloat and delaying... restructuring.

But let's think analytically--let's break this sentence up into the implicit chain of reasoning beneath it: (a) when the Federal Reserve cuts interest rates on short-term government bonds, it lowers borrowing costs for everyone; (b) there are a lot of marginal telecom firms that will go bankrupt rapidly unless their borrowing costs fall substantially; (c) the economy's long-term health depends on a rapid process of bankruptcy-and-workout in the telecom sector; hence (d) lowering interest rates harms the economy.

Laid out this way, we can see the gap in the logic. Marginal telecom firms teetering on the brink of bankruptcy do not borrow at the Federal Funds rate. The rates at which they can borrow incorporate huge risk and default premiums--they are on the edge of bankruptcy, after all. The general level of interest rates has only a trivial impact on their borrowing costs, and thus on whether teetering telecoms live or die. Only if you were certain that investment spending was completely unresponsive to interest rates could the effect of overall borrowing costs on the forthcoming telecom workout become a factor worth considering.

Nobody has any business claiming such a degree of certainty. It might be that business investment today is insensitive to interest rates (though I think it unlikely): stranger things have happened, and we have known since Paul Samuelson was a young man that business profits and expected demand relative to capacity--the factors making up the "accelerator"--are at least as important as interest rates as a determinant of business investment. But Scheiber might not be right (I would say, "is unlikely to be right").

Posted by DeLong at September 06, 2002 05:58 PM | Trackback

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lawyers or media types, who would be vague about cause and effect, or shift premises in the middle of a meeting when they saw that making different background claims about the world would provide a smoother road to their desired conclusion.

Indeed.

And since the political levers are substantially controlled by these two cohorts....

Posted by: George Zachar on September 6, 2002 06:12 PM

I think you let Noam Scheiber off a little too easy. But I liked the part where Stiglitz says no one without a PhD speaks . . . if you have any other stories like that please share on the weblog.

I wonder if the lack of rigor among policy makers is a major problem? -- or, put in a more extreme way, should they discuss policy at the same level as economists?

Posted by: Bobby on September 6, 2002 06:22 PM

I think you let Noam Scheiber off a little too easy. But I liked the part where Stiglitz says no one without a PhD speaks . . . if you have any other stories like that please share on the weblog.

I wonder if the lack of rigor among policy makers is a major problem? -- or, put in a more extreme way, should they discuss policy at the same level as economists?

Posted by: Bobby on September 6, 2002 06:22 PM

I just learned how to nest thinking about restructuring the economy and taking care of the business cycle. Thank you. (I was going to say 'Bravo!' but it may be evident to some other people.)

Posted by: Jean-Philippe Stijns on September 6, 2002 06:54 PM

I have much sympathy with the intent and direction of Brad's argument. The caveats are:

(1) Keynes didn't have a PhD in economics and his degree was in mathematics. He and many of his generation and later would have been unable to contribute. The hurdle that Stigiltz proposed sounds too much like establishing a closed shop for professional economists and that is apt to compound the aversion non-economists already feel towards both economists and economic analysis.

(2) Much is often made by non-economists of the apparent propensity of economists to disagree - hence familiar jokes, like Churchill's remark that when he asked six economists for advice he would get seven different replies, including two from Keynes. My standard response is that I hadn't noticed any conspicuous propensity for mutual professional agreement among lawyers, politicians and political activists, media pundits, leaders of religious sects or even, on occasion, scientists as with recent UK exchanges about the Higgs Boson in particle physics. The bottom-line is the cogency of the argument in all contexts.

(3) More serious is that cabinet members - or ministers in European legislatures - are unlikely to have PhDs in economics but nevertheless have to make policy decisions and to present and defend those decisions to colleagues and wider lay audiences. It may therefore help to have sharp-witted non-economist gadflies around in policy discussions to sus out where the analysis is likely to sound unconvincing or politically unattractive in constituencies. The basic problem is that economic policy is far more likely to be the topic of bar-room debate in virtually any country than current progress in scientific research or the latest exhibition in a metropolitan art gallery.

(4) I'll chance my arm - in the light of some widely reported comments by Rogoff about Stiglitz and policy making the latter may not have been the best possible authority to invoke in this context.

Posted by: Bob Briant (UK) on September 6, 2002 08:38 PM

Let's take this to an other context: how knowledgeable would we like politicians in charge of science and technology policy regarding the object of their job?

My perception is that they are very few competent politicians on any expert matter, be it economics or otherwise. But I may be wrong.

It reminds me of the grounds on which stem cell research was partially outlawed in the US. It seemed to have little to do about science or any expert discussion about the dangers of expending our knowledge and use of such cells.

So, my quesion becomes: why is it so hard to get knowledgeable politians? Are politics skill so rare that they are even more rarely combined with any other set of skills? Is it that demand for quality policy is itself a funtion of one's own understanding of what's at stake?

Or is it some kind of self-selection bias whereby they're enjoying the rush of making the policy, while we are happy members of the commenting class? ;-) Not sure this is a social optimum, though. Or is it?

Posted by: Jean-Philippe Stijns on September 6, 2002 10:10 PM

Quite a few economists have made it to the top or thereabouts as politicians: President Todaro in Peru, for example; Prodi - current President of the EU Commission and previously prime minister of Italy, and Jospin, prime minister of France from 1997 until the national elections there this year.

In Britain, post WW2 there was something of a tradition of leading Labour politicians having started as academic economists - Hugh Dalton (Chancellor of the Exchequer or treasury minister in Attlee's 1945-51 government), Hugh Gaitskell (also a Chancellor in that government and later Labour Party leader 1955-63), Harold Wilson (prime minister 1964-70 and 1974-6) and Tony Crosland (various cabinet posts) to mention only more outstanding instances.

In France, there is something of a tradition of presidents and prime ministers being graduates of the prestigious Ecole Nationale d'Administration or other "grandes écoles" academies - Giscard d'Estaing, Pompidou (École Normale Supérieure), Balladur, Chirac, Jospin.

Erhard, finance minister in Adenauer's governments 1949-63 in West Germany and then Adenhauer's successor as Chancellor had a prior career as an economist. He was widely credited at the time for the relatively "free-market" economic policies, which lead to the "economic miracle" in West Germany during the '50s and '60s - "free-market", that is, by comparison with other European countries.

For Britain, a more challenging question has been put of late as to whether the academic calibre of leading politicians has declined over the last 20 or so years. Certainly the academic credentials of leading politicians of the two main parties were more notable during the post-war period through to the 1980s than now but until the end 1970s Britain's economic performance, as measured by growth of GDP per head, consistently lagged around the bottom of the league table among major OECD economies. If academic ability alone is what counts in government there wasn't much to show for it. As for that being a party thing, from 1945 to 1979, the time in government of the two main parties is virtually equal.

Posted by: Bob Briant (UK) on September 7, 2002 04:58 AM

This was in striking contrast with our collective experience with lawyers or media types

Can't speak for media types, but a substantial part of legal training is an effort to teach students to think analytically.

The broader problem is the lack of rigor or careful thinking anywhere. Not to mention general unfamiliarity with economic arguments or such triviailities as math or science. Compare the attitudes towards free trade or rent control among economists to the those of the general population. Try the general population on any basic understanding of math or statistics.

Posted by: richard on September 7, 2002 07:02 AM

Let's try it this way. Lowering interest rates isn't going to do the US economy any good in the medium-term because:
(1) The current lowering of rates, coupled with an implicit government guarantee for Fannie bonds, has supported a bubble in the housing market. (Why are housing prices still going up in the US? Someone recently explained to me that it was because...there was a shortage of land! Right, maybe in the Hamptons...)
(2) Lowering interest rates will only have tendency to support this bubble.
(3) Any support of the bubble will send the wrong signal to Americans, who need to clean up their personal balance sheets.
(4) When the bubble bursts, as alas all bubbles do, the amount of debt that Americans hold will be higher than it otherwise would have been. The subsequent economic mess will then be worse.

OK I'm not an economist with a PhD - after my BA in maths & philosophy I did actually go to an Ivy League to get an economics PhD (full scholarship and all), but chucked it in because it looked to me that economists didn't have a clue, so went back to math and got my PhD there.

Maybe economics should get back to its roots and become--at least temporarily again--the dismal science. When so many people are up to their ears in debt, but pretend that they are wealthy and so live accordingly, exactly what is the government supposed to do? Manufacture Explorers with magic wands so they can give them away free? What is out of whack isn't "supply" and "demand"; it's the average American's ability to generate enough income to pay for his lifestyle (retirement included). It isn't monetary hocus-pocus that's going to correct this imbalance. The average American is just going to have to learn that Santa Claus doesn't exist.

Posted by: Andrew Boucher on September 7, 2002 09:08 AM

Allow me to crash the lovefest. Professional economists are better than non-economists when discussing specifically economic questions (duh) but they can be horrible when discussing any question which has major non-economic aspect.

Examples include global warming and the environment, globalization, and "shock therapy" in Eastern Europe. In my opinion the most egregiously wrong statements in these areas are mostly produced by cocksure economists who are dogmatically certain that, since their science is more scientific than their opponents' science, that they are right. It doesn't work that way. If a problems has, for example, two major aspects and only one of them has been scientifically studied, that doesn't mean that you can go full speed ahead and simply ignore the unstudied aspect.

Individual economists, of course, do not necessarily represent the whole profession. But I believe that often the preponderance of economic advice regarding the environment or third world economic development has been misleading or wrong. And this is not a problem solvable by internal criticism by economists.

See www.vanitysite.net/dismal.htm for more.

Posted by: zizka on September 7, 2002 09:12 AM

'Meanwhile, in an industry like telecom, where there is too much capacity... lowering interest rates could exacerbate the situation by keeping marginal companies afloat and delaying... restructuring.'

Liquidationist pod people are slowly replacing our public intellectuals. Augh.

Oh no, Andrew's one of them too! I'm sleeping under the bed.

Posted by: Jason McCullough on September 7, 2002 01:43 PM

I have listened long, often and patiently to an endless series of anti-globalisation activists and pundits interviewed on the media in the increasingly desperate hope of discovering a coherent statement of their creed. So far as I can discern there seem to be four distinct sects:

(1) Latter-day disciples of Friedrich List (1789-1846).

(2) Critics of IMF and World Bank policies. That I can understand although from other sources it seems the correlation between the amounts of World Bank aid distributed to developing countries over past decades and their subsequent economic performance in terms of per capita GDP growth is depressingly small. Why is it that the high population density countries of south-east and east Asia seem to have made the best progress in making transitions to industrialised economies over the past 50 years, usually without much aid from international institutions?

(3) Those who very properly complain that for all the official exhortations by affluent country governments about the benefits of trade those very governments exhibit a recurring tendency to maintain or impose restrictions on the imports of those very products developing countries might be expected to have comparative advantages in producing. Has Ricardo fallen out of fashion?

(4) The plain confused.

So far as I can gather these four sects combine in a coalition to push an anti-globalisation agenda even though their aims, objectives and rationales are largely incompatible in so far as these are at all clear. Please enlighten me.

Posted by: Bob Briant on September 7, 2002 04:17 PM

Mr Briant: Thanks for your thoughtful response. Who was Frederick List? Apparently he was wrong about everything, but I don't know anything else about him. I now know that I am an idiot, I just don't know why. Please respond at your earliest convenience.

Posted by: zizka on September 7, 2002 05:22 PM

The name is FRIEDRICH List.

It's perhaps not surprising that you haven't heard of List. I did a quick check through my personal collection of economics books but references therein to List and his works are exceedingly sparse in mainstream texts. The few that I found were brief and slight so I then tried MS Encarta encyclopaedia but found no references there at all.

Undaunted, I tried the google Internet search engine which duly produced huge numbers of references to websites dedicated to List, many with extensive extracts from his writings. That told me something before going any further. Rather than my attempting to paraphrase and precis List, why not try a few of the websites retrieved by google?

Posted by: Bob Briant on September 7, 2002 11:11 PM

I really was not asking about List, much less about the spelling of his name which I correctly (I think) but absent-mindedly naturalized into English. I was under the perhaps-mistaken impression that you were responding to my post, and that you thought that the mere mention of List's name was a refutation of what I had said.

Posted by: zizka on September 7, 2002 11:32 PM

>>a substantial part of legal training is an effort to teach students to think analytically<<

And an even larger part of legal training is an effort to teach students how to fuzz the issues when the desired conclusion is not reached.

Posted by: Brad DeLong on September 8, 2002 06:28 AM

an even larger part of legal training is an effort to teach students how to fuzz the issues when the desired conclusion is not reached

I was puzzled by your omission of this notion in the original post.

You described not a lack of analytical thought, but advocacy masquerading as analysis.

This false colors type of discourse poisons much of what passes for policial commentary and news these days.

Posted by: George Zachar on September 9, 2002 04:15 AM

"I believe that often the preponderance of economic advice regarding the environment or third world economic development has been misleading or wrong. And this is not a problem solvable by internal criticism by economists."

There really have been many many failed development and environment protection projects over the past 50 years. There is every reason to repeatedly think through the socio-economics of such projects. Globalization is a most complex mixture of successes and failures in human terms, and we had better look again and again to the reasons for both.

Posted by: on September 10, 2002 10:53 AM

>>And an even larger part of legal training is an effort to teach students how to fuzz the issues when the desired conclusion is not reached<<

Actually that's not true at all. In my three years of law school there was a whole lot of work on analysis and not a single class hour I can remember on "fuzzing" -- so if there was any teaching of it, it didn't take.

Of course, when engaged in *advocacy* one naturally tries to distract from the arguments being used against one's client.

But my observation is that economists engaged in *advocacy* due very much the same thing -- as does everyone else engaged in advocacy. (Should I mention the politicians some economists work for?)

Of course, lawyers engaged in advocacy are openly recognized as such, so there's nothing very misleading about it and the public discounts what they say to reasonable value.

But when economists engaged in advocacy swear they are speaking the God's honest undeniable unambiguous unquestionable professional truth ... well ...

Posted by: Jim Glass on September 10, 2002 04:10 PM

All of which supports the proposition that what matters is the congency of the argument or analysis, not invocations of authority. After some unsolicited experience of this game of "my profession is better than yours", I have come to believe that claims based on exchanges of broad generalities do little to progress discussion.

Seems to me economists are at their most useful focus, at least from a public perspective, when disentangling specific cases, perhaps especially populist causes such as trade protection or illuminating contradictory strands in the anti-globalisation agenda. The famously disputatious proclivities of economists are something to celebrate for that shows an entirely healthy inclination to pick holes in the arguments of fellow professionals. Dogma is seldom allowed to prevail unchallenged in the profession.

If vague criticisms of the kind that economics has neglected "the environment" are perhaps apt to be treated within the profession with a little impatience that is because basic theory distinguishing between social and private costs and benefits goes back at least to the beginnings of the last century with much refinement since and all that often seems to have bypassed notice by critics. It is even arguable that Adam Smith in The Wealth of Nations (1776) had at least a fuzzy insight into the distinction as in this passage: "The third and last duty of the sovereign or commonwealth is that of erecting and maintaining those public institutions and those public works, which, though they may be in the highest degree advantageous to a great society, are, however, of such a nature that the profit could never repay the expense to any individual or small number of individuals, and which it therefore cannot be expected that any individual or small number of individuals should erect or maintain." [Book 5, Chapter 1, Part 3].

What that leaves vague, of course, is how to decide when the social advantages of a project are sufficient to justify the cost. In much public debate the argument has not progressed much beyond: "We must not reckon profit and loss according to the book, but only according to political needs. There must be no calculation of cost. I require that you do all that you can and to prove that part of the national fortune is in your hands. Whether new investment can be written off in every case is a matter of indifference."

Oddly enough, that was from a speech by Goering in 1936 as economics minister in the Third Reich. [John Hiden: Republican and Fascist Germany (1996), p. 128]

Posted by: Bob Briant (UK) on September 11, 2002 12:19 PM

>>>>a substantial part of legal training is an effort to teach students to think analytically<<

And an even larger part of legal training is an effort to teach students how to fuzz the issues when the desired conclusion is not reached.<<

I am not sure that it is seemly for economists, of all people, to be criticising pretty much anyone else on this score!

Posted by: dsquared on September 16, 2002 03:43 AM
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