Category: Uncategorized
Predicting future promotions from police cadets’ facial traits
From the results:
Facial traits are the primary driver of subject perceptions of leadership ability, and those perceptions successfully predict promotional success later in the cadets’ careers. When selecting for leadership potential based on police cadet photographs, respondents predict correct promotional choices at levels well above chance as measured by an AUC score of .70. Further, respondents’ evaluations successfully discriminate both between no promotion and lieutenant promotion, and sergeant versus lieutenant promotions.
That is from a new paper by Ian T. Adams, Scott M. Mourtgos, Christopher A. Simon, and Nicholas P. Lovrich. Via the excellent Kevin Lewis.
The dominance of large factor models in finance
This is less news to the private sector traders on the frontier, but the idea now has reached academia and the NBER working paper series:
We introduce artificial intelligence pricing theory (AIPT). In contrast with the APT’s foundational assumption of a low dimensional factor structure in returns, the AIPT conjectures that returns are driven by a large number of factors. We first verify this conjecture empirically and show that nonlinear models with an exorbitant number of factors (many more than the number of training observations or base assets) are far more successful in describing the out-of-sample behavior of asset returns than simpler standard models. We then theoretically characterize the behavior of large factor pricing models, from which we show that the AIPT’s “many factors” conjecture faithfully explains our empirical findings, while the APT’s “few factors” conjecture is contradicted by the data.
That is from a new paper by
The culture that is Washington, D.C.
Campaign-finance reports reveal that Republicans overwhelmingly outspend Democrats at every major steakhouse in the city… At the Capital Grille, Republicans have outspent Democrats nearly 13 to 1 so far this election cycle.
That is from Jessica Sidman. Here is the full and interesting article., and an excerpt:
Longtime Capital Grille regular David Safavian remembers the same. But things changed, says the American Conservative Union’s general counsel, as the District became more of a dining destination—and politics became more divisive. “Conservatives tend not to really care about the ‘foodie’ culture as much as Democrats do—we would rather just go have a good steak and a glass of wine,” Safavian says. “Back when the city was more bipartisan, Capital Grille reflected that. As the city has become more polarized, I think Republicans go to more traditional establishments.”
Perhaps in the 1980s and 1990s there was somewhat of a Republican connection to Chinese food, but now that seems to be gone…?
Monday assorted links
Reducing Pollution in India with a Cap and Trade Market
India has some of the worst air pollution in the world. India regulates pollution but it uses a command and control approach with criminal penalties, a system in tension with enforcement given low-state capacity. The result has been widespread corruption, inefficiency, and poor enforcement of pollution controls. In a very important paper, Greenstone, Pande, Ryan and Sudarshan report on an experiment with a market for particulate matter in Surat, India. In fact, this is the first particulate-matter market anywhere in the world.
The experiment created two sets of firms, the treatment set were required to install continuous emission monitoring systems (CEMS) which measured the output of particulate matter. The control set of firms remained under the command and control system which required the installation of various pollution control devices and spot checks. Firms were randomly assigned to treatment or control. Pollution at treatment firms was capped and permits were issued for 80% of the cap so firms could pollute at 80% of the cap for free. Permits for the remaining 20% of the cap were sold at auction and trading was allowed. Treatment plants which polluted more than their permits allowed paid substantial fines, about double the cost they would have paid to buy the necessary permits.
The one and half year experiment revealed a great deal of importance. First, the CEMS systems and the switch to financial penalties reduced the cost of enforcement so that essentially all firms quickly came into compliance. Second, trading was vigorous, which indicated that firms have heterogeneous and changing costs. Moreover, by allowing for a more information rich market the costs of achieving a given level of pollution fell. Pollution costs were 11% lower in treatment firms compared to control firms at the same level of pollution. The value of trade in lowering abatement costs illustrates Hayek’s idea that one of the virtues of markets is that they make use of information of particular circumstances of time and place. In fact, since the costs of achieving a given level of pollution were low, the authorities decreased the cap so that the treatment firms reduced their pollution levels significantly relative to the control firms.
The CEMS systems were a fixed cost but because abatement costs decreased, the overall expense was reasonable. The need for monitoring systems and procedures highlights Coase’s insight that property rights in externalities must be designed and enforced, the visible and invisible hand work best together.
Using estimates on a statistical life-year in India of $9,500 (about 1/10th to 1/30 the level typically used in the US) the authors find that the benefits of substantial pollution reduction exceed the costs by a factor of 25:1 or higher.
I have emphasized (and video here) that there are significant productivity gains to reducing air pollution which would make these benefit to cost ratios even higher. Less pollution can mean more health and more wealth.
The authors are especially to be congratulated because this paper began in 2010 with discussions with the Gujurat Pollution Control Board. It took over a decade to implement the experiment with the authors helping to design not just the market but also the technical standards for CEMS monitoring. Amazing. The success of the system is already leading to expansion across India. Bravo!
Hat tip: Paul Novosad.
Carrying costs > liquidity premium, and not only pandas have a fertility crisis
A zoo in Finland has agreed with Chinese authorities to return two loaned giant pandas to China more than eight years ahead of schedule because they have become too expensive for the facility to maintain amid declining visitors.
The private Ähtäri Zoo in central Finland some 330 kilometers (205 miles) north of Helsinki said Wednesday on its Facebook page that the female panda Lumi, Finnish for “snow,” and the male panda Pyry, meaning “snowfall,” will return “prematurely” to China later this year.
The panda pair was China’s gift to mark the Nordic nation’s 100 years of independence in 2017, and they were supposed to be on loan until 2033.
But since then the zoo has experienced a number of challenges, including a decline in visitors due to the 2020 coronavirus pandemic and the conflict between Russia and Ukraine, as well as an increase in inflation and interest rates, the facility said in a statement.
Here is the full NPR story.
*Megalopolis* (only modest spoilers)
A fascinating movie, far more interesting than most of the slop they send your way. And it is visually stunning, with an excellent cast to boot.
One is never quite sure how to feel about what is shown on the screen, but one side of forces here are pro-growth, pro-billionaire, pro-YIMBY, and pro-science. The film itself is strongly anti-crowd and anti-populist. Contra some other recent trends, there is one trans character and that person is a villain.
It is all set in a future “alternate universe” America, where something like the Roman Senate rules and society is falling apart, both stagnant and decadent. Exactly who or what was at fault? In this parallel universe, there is no internet, few immigrants, and very little feminization. Women are sexually attractive and voracious, yet kept in their place. Some other technologies are quite advanced — physical technologies — so that a miracle city can be built. Should it be built? Can it be built? That is a central theme of the plot.
To be sure, the film has flaws galore. Some parts of the plot make no sense, and Coppola repeatedly chooses to go “over the top,” when most of the time he did not have to. Periodically the characters lapse into Latin or quote Shakespeare. The plot at some points ceases to be linear. I am uncertain how to interpret the implied politics, but I am pretty sure they are not mine.
I was never tempted to walk out, nor did it ever drag.
Matt Yglesias has a good and perceptive review.
Meta-lesson: Don’t let them tell you when to retire.
Newsom vetoes AI bill
California Gov. Gavin Newsom has vetoed a controversial artificial-intelligence safety bill that pitted some of the biggest tech companies against prominent scientists who developed the technology.
The Democrat decided to reject the measure because it applies only to the biggest and most expensive AI models and leaves others unregulated, according to a person with knowledge of his thinking. Smaller models could prove just as problematic, and Newsom would prefer a regulatory framework that encompasses them all, the person added.
Had Newsom signed the bill into law, it would have laid the groundwork for how AI is regulated across the U.S., as California is home to the top companies in the industry. Proposals to regulate AI nationally have made little progress in Washington.
The governor is hoping to work with AI researchers and other experts on new legislation next year that could tackle in a more comprehensive way the same concerns of the bill he vetoed—about AI acting in ways its designers didn’t intend and causing economic or societal damage, the person with knowledge of his thinking said.
Here is more from the WSJ.
Sunday assorted links
1. The changing federal pay scale. I guess things must run much better now with all those experienced workers.
2. Do Anglo-Saxon directors raise debt levels?
3. When I first met Matt, the first thing I said was “Matt Levine, only you can do what you do!” Here is Gwern.
4. Do dogs resemble their owners?
5. The railroads did in fact matter a great deal for U.S. productivity.
6. Does terrorism work, but for its supporters only?
7. Methods of Israeli intelligence (FT).
How tenure should be granted, circa 2024
Not just on the basis of what you publish, but on what you contribute to the major AI models. So if you go to a major archive and, in some manner, turn it into AI-readable form, that should count for a good deal. It is no worse than publishing a significant article, though of course depending on the quality of the archive. As it stands today, you basically would get no credit for that. You would instead be expected to turn the archive into articles or a book, even if that meant unearthing far less data for the AIs. Turning data into books takes a long time — is that always what humans should be doing?
Articles still count under this standard, as jstor seems to be in the literary “diet” of the major AI models. Wikipedia contributions should count for tenure, and any “hard for the AI to access data set” should count for all the more. Soon it won’t much matter whether humans read your data contribution, as long as the AIs do.
So we’re all going to do this, right? After all, “how much you really contribute to science” is obviously the standard we use, right? Right?
Saturday assorted links
1. Imports do not subtract from gdp.
2. A duet?
3. How to improve dynamic scoring for the budget.
4. Fresh Beeple.
5. CNN coverage of El Salvador shows the vibe shift.
6. Fresh Vitalik.
7. “A 25 year old woman’s type 2 diabetes was cured with stem cells taken from her own body.”
8. Kyla Scanlon profile (WSJ).
9. Is India the next great cheese frontier? (WSJ)
10. More and more young people are taking disability benefits (FT).
Nixon’s ten percent import duty
That is the topic of my latest Bloomberg column, with a big assist from Doug Irwin. Here is one excerpt:
In 1971, President Richard Nixon imposed a 10% tax on foreign goods brought into the US, and kept it in place for four months. The best that can be said about this experience, well-documented by Dartmouth economist Douglas A. Irwin in a 2012 essay, is that the US economy survived it.
That is hardly good news, but it is a partial comfort. At the time, Republican officials were demanding an end to undervalued foreign currencies, better trade treatment of US exports and more spending on defense by US allies. (Sound familiar?) After this rhetoric and policy, however, came an era of trade liberalization. The costs of protection and the incentives for freer trade simply proved too strong, and subsequent presidents of both parties oversaw tariff reductions.
In 1971, Nixon’s key demand was specific: Countries had to let their currencies float upward against the US dollar. The goal was to weaken the dollar in relative terms and thus help US exports.
And these key points:
After imposing the tariff, and much negotiation, the US did receive something concrete in return: More countries allowed their currencies to float against the dollar — notably the yen, the mark and the franc. Those moves then led to a broader collapse of the Bretton Woods fixed exchange rate system, and accelerated the arrival of floating exchange rates with the Smithsonian agreement of December 1971.
Trump has no equivalent concrete demands for US trading partners. Nixon’s demand to let the exchange rates float was something that could happen immediately and was fully transparent. And it was virtually impossible to reverse. Once it happened, the US could remove the import duty. The other demands of the time — better treatment of US exports and more burden-sharing for defense — went largely unheeded, as it is much harder to negotiate over such long-term and hard-to-define changes.
Recommended.
A new schizophrenia drug
One of the most satisfying aspects of covering biotech as long as I have is the opportunity to report on the long arc of drug development, from start to finish. It’s not always pretty, and more often than not, it ends badly.
But KarXT, now Cobenfy, is one of those drug stories with a happy ending. I remember talking to Steven Paul in 2019 for a story about the phase 2 results, which were pretty remarkable. Paul was excited about what KarXT might mean for people with schizophrenia, but he was cautious because, as he warned me at the time, clinical trials for psychiatric conditions are extraordinarily difficult to replicate. Let’s wait to see what KarXT does in Ph3 trials, he said.
Now, we know.
It’s been cool to follow and report on the KarXT story all these years. From PureTech to Karuna to Bristol Myers Squibb, and now, to approval, where Cobenfy will have a meaningful impact on people living with schizophrenia.
That is from Adam Feuerstein, who also links to StatNews:
The drug, called Cobenfy, will be sold by Bristol Myers Squibb. It was developed by the biotech company Karuna Therapeutics, which Bristol acquired for $14 billion last year.
Supply is elastic, people. And we live in a (potential) golden age for biomedical advances.
Crime vs. disorder
A similar pattern emerged in my recent report on crime in Washington, D.C. There, too, there are signs that disorder has risen, relative to both the pandemic and pre-pandemic, as the police have attended to it less. Unsheltered homelessness, unsanitary conditions, shoplifting, farebeating—all seem to have become more common in D.C. And those problems have come as a smaller police force has deprioritized order enforcement—if you look at table 2 of that report, you’ll see that arrests for minor crimes were down as much as 99% in 2023 relative to 2019.
I increasingly think this is a more general phenomenon. Disorder is not measured like crime—there is no system for aggregating measures of disorder across cities. But if you look for the signs, they are there. Retail theft, though hard to measure, has grown bad enough that major retailers now lock up their wares in many cities. The unsheltered homeless population has risen sharply. People seem to be controlling their dogs less. Road deaths have risen, even as vehicle miles driven declined, suggesting people are driving more irresponsibly. Public drug use in cities from San Francisco to Philadelphia has gotten bad enough to prompt crack-downs.
These are fuzzy signals, but they jive with my personal experience (for whatever that is worth). In the half-dozen cities I’ve visited in the past year, visible disorder has been a common feature.
Here is more from Charles Fain Lehman.
Friday assorted links
1. “men do okay, but women usually win…”
2. Ed Glaeser on the Jon Hartley podcast.
3. Is bad service the sign of a better world?
4. Bari Weiss media start-up valued at $100 million.
5. Malcolm Gladwell on his new book and his development (NYT).
6. Scott Sumner on artistic styles.
7. As the worker shortage in Tokyo grows, workers are demanding ever-shorter commutes (FT). Prices are adjusting accordingly.
8. The Brian Eno AI movie (FT).