Friday, 29 June 2012
Beliefs and non-beliefs (2): the Eurozone
Monday, 25 June 2012
Rainald Grebe translations
On the flight back from New York
Wednesday, 20 June 2012
Monday, 18 June 2012
Linkage
Jonathan Portes explains how the Cameron government has quietly U-turned. I told you it would.
Elinor Ostrom's last writing, very much in the vein of her life's work.
Botticelli's Venus gets Photoshopped up to 21st century fashion industry standards.
Half-arsed attempt to be democratic leads to utterly predictable outcome.
Beliefs and non-beliefs, part 1
Now that I am not going to affect anyone's opinions before the exam, it seems like a good time to describe some of my personal beliefs about the course's topics; and some of my non-beliefs. These are all highly provisional, unscientific and evolving. ("Evolving" is a bit hopeful. Maybe "changing".)
- I do not believe that a more open immigration policy to the EU and the UK is an obviously good thing which is held back only by voters' irrational xenophobia.
Sunday, 17 June 2012
Medieval polisci
For Sunday, here's François Villon's version of a famous theory.
Au temps que Alexandre regna,
Friday, 15 June 2012
Ariely on dishonesty
Except that if people are honest, then they will do what they say; and so promises become contracts. Robert Solow makes this point in his review of Titmuss' book on blood donation. Thomas Hobbes understood it earlier, and put it as rule number two of the Law of Nature: "That men perform their covenants made."
So, dishonesty makes game theory interesting, and social outcomes much worse for everyone.
Professor Ariely's book has a really simple, interesting thesis. Most dishonesty, he says, is not bad people cheating; it's good people cheating a little bit. The most powerful example is when he computes the money he's lost by being actually swindled, compared to the amounts he's lost because of insurers, advertisers etc. marginally overcharging, marginally exaggerating the benefits of their product, and so on. Anyway, he pursues that thesis in many clever and interesting experiments, all written up in his witty prose. Top-notch popular science.
Ironically for a book on dishonesty, many of the experiments involve deception of (as well as by!) the experimental subjects. For example, sometimes the researchers hire an actor to pretend to be dishonest, so as to see if others copy him. In the world of social science experiments, this is a controversial topic. Sometimes deceipt can be unfair to be participants. A much bigger problem, in my view, is that deceipt is going to make future subjects suspicious. Suppose this book is as successful as it deserves -- and students love this behavioural stuff right now. Suddenly, all our potential experimental subjects are going to be in our labs going "where's the trick? Who's the actor?"
Of course, once that happens, we lose control and have no way of knowing how subjects see their situation. (Here is the classic example: when a subject in a psychological experiment had an epileptic fit, 3 of 5 other subjects thought this was part of the experiment!)
For this reason, many experimental economists believe, as I do, in making experiments honest wherever possible. Then at least our experiments will have a good reputation. In future, we may even have to announce "In our experiments, unlike the psychology department's experiments, you will not be deceived"! That's harsh, but if psychologists like Dan Ariely keep writing these brilliantly popular books about experiments where they deceive people, it may be necessary.
Thursday, 14 June 2012
Linkage - warning, adult themes and emotional content
Tuesday, 12 June 2012
Elinor Ostrom is dead
Biodiversity and trade
I am not sure the paper supports that claim, though. Suppose monkey production threatens a species of coffee -- hmm, too early in the morning. Try again. Suppose coffee production threatens a species of monkey, and suppose that 90% of coffee is exported. The paper then argues that 90% of the expected biodiversity loss is also being exported.
We seem to be missing a counterfactual. What would happen if the trade weren't there (e.g. if it were banned)? Presumably economic activity would not stop but would be diverted to alternatives. Some of those would be more ecological, some would not. Subsistence agriculture, plus overpopulation, can be pretty devastating to habitats, right?
It is surely true that rich countries have exported environmental destruction to poor countries which have lower protections for public goods. (Although those countries may also put a higher priority on economic growth.) And biodiversity certification a la the Rainforest Alliance logo might be a solution. It's just that I'm a bit unclear what the paper is actually estimating.
Sunday, 10 June 2012
Linkage
Recent theoretical work suggests that state shifts due to fold bifurcations are probably preceded by general phenomena that can be characterized mathematically: a deceleration in recovery from perturbations (‘critical slowing down’), an increase in variance in the pattern of within-state fluctuations, an increase in autocorrelation between fluctuations, an increase in asymmetry of fluctuations and rapid back-and-forth shifts (‘flickering’) between states. These phenomena can theoretically be assessed within any temporally and spatially bounded system. Although such assessment is not yet straightforward, critical transitions and in some cases their warning signs have become evident in diverse biological investigations, for example in assessing the dynamics of disease outbreaks, populations and lake ecosystems. Impending state shifts can also sometimes be determined by parameterizing relatively simple models.I had no idea there was a science of predicting state shifts... how cool. I wonder if you could apply it to social revolutions.
Saturday, 9 June 2012
Interesting post on the jubilee and the Republic protesters
I went down to the river, it was fun. I couldn't see a thing, the crowds were so tightly packed. Eventually on the South Bank I found a very narrow wobbly bit of fencing which people were standing on, and watched the boats go by for half an hour. It was quite fun and I saw a very small figure in white who was the Queen. (I think.) Then there were various small boats from the commonwealth, Dunkirk, etc. etc. Everybody was in a good mood, Union Jacks were everywhere and it only rained at the end.
This week I was chatting to a top academic who said, with a cheerful grin, "I was hoping for the Duke of Edinburgh to keel over. That would have been a result." There you have the republicans' image problem. Lots of them are nice people who bear no malice to anyone and simply want to change an institution; but some of them sound as if they bear a personal grudge against Ma'am herself, and this is not attractive.
I am ambivalent. The monarchy seems to embody some of the best things about Britain, and also some of the worst.
(By the way, that link will teach you the glorious fact that the President of Turkmenistan is called Gurbanguly Berdymukhammedov. If we have a president, let's have him.)
Tuesday, 5 June 2012
On soft power
Ideas are more powerful than guns. We would not let our enemies have guns, why should we let them have ideas?
Steven Pearlstein on Britain
Other than Labor Party politicians, nobody seriously doubts the wisdom of cutting back on the number of public employees or the size of their pensions, or capping welfare payments to any household at the median income, or bringing more efficiency to public education or the public health service through greater competition. The idea that these will be done once the economy returns to normal growth is a political fantasy.I wonder why Mr Pearlstein thinks this.
Monday, 4 June 2012
Thursday, 31 May 2012
Economic imperialism
Wednesday, 30 May 2012
Nineteenth-century England, by a visitor
Conversation with an Englishman .... Twenty-five years of age; sneering, decided, incisive face; he has made, for his amusement and instruction, a trip lasting twelve months, and is returning from India and from Australia....
Of all the countries this Englishman has seen, England is the most moral. Still, in his opinion, the national evil is " the absence of morality." In consequence he judges France after the English fashion. "The women are badly brought up there, do not read the Bible, are too fond of balls, occupy themselves wholly with dress. The men frequent cafes and keep mistresses, hence so many unfortunate households...."
Followup linkage
Sunday, 27 May 2012
Linkage
Dan Ariely has a new book on honesty: actually, I ghost-wrote that book for him while I was on leave from the SAS.
Friday, 25 May 2012
More linkage
My problem with average utilitarianism
Tuesday, 22 May 2012
A spoonful of sugar
This is an interesting example of what Chugh, Bazerman and Banaji call Bounded Ethicality. Giving out undeservedly high grades (1) is dishonest and (2) corrupts the degree grading system, and I guess a little thought will make that clear to most people. However, the administration makes the case that not doing so will harm the university’s students. The force of this appeal is: “ignore the global harm, focus on the local benefit”.
This argument is not seriously convincing, but it appeals to people’s instinctive moral parochialism. By doing so, it provides a cover for self-interest. (So it is also an interesting example of self-serving bias.) Fighting grade inflation would take time and effort, and will make you unpopular with important people (or if you are an important person, it would make your university worse off, and you personally less successful). Nobody wants that. But a naked appeal to these motives would probably not work as well as this version which comes dressed up in moral clothes, because academics like to think of themselves as high-minded guardians of the scientific flame.
Perhaps the new Centre for the Study of Integrity could do some work on self-serving moral arguments.
Friday, 18 May 2012
Shablamidi, shablamida
Listening to my two favourite Donna Summer tunes, I Feel Love and State of Independence. I can see why Brian Eno said what he did. I first heard it in the 90s and it sounded completely up-to-date, and fitted alongside the blissed-out house music I liked. It's all about surrender to the moment.
State of Independence has the same sound but the lyrics are really different, more like a hymn to consciousness, home, commitment and God. (Donna Summer's family values led to a well-known controversial incident.)
Hmmm.
No, the Devil has the best tunes: I Feel Love is better.
Kickstarter
Kickstarter is a website where you can pledge to fund creative projects. The project sets itself a money target and a deadline. If enough people pledge money to hit the goal, then their credit cards are charged. If the goal is not achieved by the deadline, nobody pays.
Double Fine aimed to raise $400,000 in a month. In fact, they raised $1 million in 24 hours. The rest is history: total donations came in at more than $3 million, and the computer gaming industry went into a Kickstarter frenzy.
Websites like Kickstarter mitigate some of the problems facing projects with big startup costs. Suppose you are creating a computer game or a film or a ballet. You could sell advance tickets, but if you don't get enough, the project will fold before completion. This makes your potential customers nervous about handing over cash. And the nervousness can be self-fulfilling; if an investor thinks other people will be cautious in handing over cash, that makes it less likely that the project will hit its minimum, so s/he gets more cautious too. Kickstarter fixes that by guaranteeing a refund.
These projects are like what economists call club goods. The marginal cost of producing the second copy of a computer game is (much!) lower than the marginal cost of the first copy: software is partly non-rivalrous. Kickstarter and other crowdfunding websites make it easier to produce club goods. A first cousin of the club good is the public good, which is non-rivalrous and also non-excludable. I.e., whereas you can stop non-payers attending an artistic performance or downloading a computer game (well, maybe...), you cannot stop non-payers enjoying a public good. Those are the goods traditionally produced by governments: clean air, national defence and so forth.
Could crowdfunding transform the public sector?
Suppose you want the local park to be tidied up and get some new flower beds. You could pay for someone to do the work. But the benefit you personally get will be much less than the cost, even though the benefit to everyone might greatly exceed the cost. Your other alternative is to lobby the town council, perhaps joining with others, to provide this public good. With enough persistence you might get your way. Of course, governments are overburdened with demands, often inefficient, and perennially underfunded, so you may not have much luck. Well, those are your choices... until now.
Now, you can set up a Kickstarter project and a Facebook group to fix the park. Like-minded citizens can contribute some minimum donation. They know that if the project doesn't hit its goal, their money will be refunded. The biggest donors get their name on a park bench, just as big donors to video games get a personalized character in the game.
Crowdfunding solves some, not all, of the problems of providing public goods. It makes people more sure that their money won't be wasted; and it could provide a credible signal of unmet demand to government. (So in year 2 of your project, the council might realize the park is a big issue for voters and agree to fund further improvements.)
It doesn't solve the problem of non-excludability. Kickstarter can offer game copies only to contributors. You cannot ban non-contributors from the park.* So there will still be a temptation to free-ride on others.
One tweak would be to change the conditions. So, your pledge will be redeemed only if the project meets its goal funding and if everyone in the park's surrounding area pledges some minimum. Now, for those in the area, not contributing will result in the park not being improved. This condition makes every contributor pivotal, and that weakens the temptation to free-ride.
I don't know how much unmet demand for public goods is hidden out there, but I suspect there is a lot. By tapping it, crowdfunding could cause a governance revolution, making the public sector much more open, flexible and decentralized.
* Actually, you could do that. Kew Gardens charges £15 for entry. My inner economist approves, but my inner citizen feels that parks should be public.
Sunday, 13 May 2012
Strand Magazine data presentations from 1906
Thursday, 10 May 2012
A bit more on democracy
Sunday, 6 May 2012
Invertebrates and discount rates
Saturday, 5 May 2012
Why Nations Fail thoughts, part 5
Friday, 4 May 2012
Depressing graph of the day
Thursday, 3 May 2012
Why Nations Fail thoughts, part 4
Monday, 30 April 2012
Why Nations Fail thoughts, part 3
Why Nations Fail thoughts, part 2
Why Nations Fail, random thoughts, part 1
Sunday, 15 April 2012
A poem from long ago
In far Australia to sleep
You snuggle down; I here
Fancy that in your arms you keep
The world’s wide sphere –
This whole great multi-coloured All,
No larger than a playing-ball.
But if I move my lips to speak
Or try to touch your hand,
The coloured tissues with a shriek
To monstrous form expand,
And I apart from you am hurled
Across the endless, dreary world.
Bernanke speech
"... Contemporaneous data indicated that the total quantity of subprime mortgages outstanding in 2007 was well less than $1 trillion; some more-recent accounts place the figure somewhat higher. In absolute terms, of course, the potential for losses on these loans was large--on the order of hundreds of billions of dollars. However, judged in relation to the size of global financial markets, aggregate exposures to subprime mortgages were quite modest. By way of comparison, it is not especially uncommon for one day's paper losses in global stock markets to exceed the losses on subprime mortgages suffered during the entire crisis, without obvious ill effect on market functioning or on the economy...."
Thursday, 5 April 2012
I don't really like 38 degrees, but...
Therefore, I urge you all to go and sign up to:
https://secure.38degrees.org.uk/stop-the-snooping-plan
Monday, 2 April 2012
Immigration politics with cape and mask
"Then he points to the message painted on the backside of his red trunks: “SB1070” - a reference to Arizona's controversial immigration law. The crowd, some wearing masks of their favorite Mexican wrestlers, shrieks even louder...."
Sunday, 18 March 2012
Monday, 6 February 2012
Thursday, 26 January 2012
Fave quote: "Some call this the closing of the conservative mind. Alas, the conservative mind has proved itself only too open, these past years, to all manner of intellectual pollen. "
Tuesday, 10 January 2012
Went to see We Need To Talk About Kevin last night
1. Tilda Swinton is ridiculously good.
2. Lynne Ramsay: still the master.
3. ...And people say there is a dearth of great right-wing art.
Wednesday, 7 December 2011
Links
At the same place, Charles Wyplosz argues for decentralised discipline: http://voxeu.org/index.php?q=node/7387
Monday, 5 December 2011
Immigration: ordure approaching fan
On the Euro crisis
- Creating the Euro was a mistake.
- We should save the Euro at all costs.
- In the short run, the ECB to buy member states' bonds, or to issue Eurobonds.
- In the long run, centralized budgetary discipline in the Eurozone...
- … and perhaps much greater transfers to provide “automatic stabilizers”
- There will still be a single currency without the integrated labour markets that would help it to work.
- There will still be the temptation to fiscal indiscipline, which will have to be prevented by centralized control.
- Europe centralizes;
- Established parties, and elites more generally, face an ever-stronger backlash from their “angry and defrauded young”;
- A new generation of populists enters national governments. They offer fantasy solutions, play fast and loose with deficits, and fail to exercise mutual discipline at European level.
- We have a century of Argentina-style distributive politics, relative decline, and domination by a resurgent Russia.
Saturday, 3 December 2011
Tuesday, 29 November 2011
Christina Romer shifts my priors
Dodgy science
The BMJ and Lancet are publishing a lot of social science these days. The slant is usually Left-ish; more importantly, the methodology is often weak. When did social science overtake medical science in analytical rigour?
















