Corn fact of the day
…in the United States: they find that the 95th percentile of corn yield is 190 percent larger than the 5th percentile yield. For comparison, the 95–5 ratio for Uganda is 9,304 percent and for Tanzania 2,558 percent…
That is from Tavneet Suri and Christopher Udry. Via Gaurav Sood.
The game theory of attacking nuclear power plants
From my latest Bloomberg column (do I really need to indent my own text?):
“Putin would like to find a way of making nuclear threats without quite incurring the liability from … making nuclear threats.
Enter nuclear power plants. When Russian forces attack the plant, there is some chance that something goes wrong, such as a radiation spill. But more likely than not, the plant will hold up, and most dangerous processes can be shut down and the very worst outcomes avoided. You can think of Putin as choosing a “nuclear radiation deployment” with only some small probability.
Why might he do this? Well, he is showing that the use of broader nuclear deployments is not out of the question. He is also showing that he is willing to take a huge risk.
Most of all, he doesn’t much have to fear retaliation. The Western powers cannot know if these nuclear attacks are deliberate strategy or simply an accident of tactics in the field, and so — if only for that reason — they will not respond with a major escalation. If Russian forces moved on Estonia, they might be courting a very serious NATO response. But not in this situation.
You don’t have to believe that Putin sat in his lair rubbing his hands as he dreamed up this diabolical strategy. It’s also possible that the attack on the nuclear power plant started by mistake, or was ordered by lower-level commanders. Putin then simply allowed it to continue, perhaps out of a general love of chaos. At the very least, he did not consider it a priority to stop the attack.
Game theory doesn’t always have to be about explicit plans and intentions. It also can help explain why “invisible hand” mechanisms lead people to a particular point in the strategy tree, as if they had those strategies as conscious intentions.
Attacking the nuclear power plant also illuminates some other parts of game theory. Ukraine and its people are taking very heavy losses and are hoping for NATO to intervene on their behalf. If the conflict seems riskier to all of Europe, and not just Ukraine, the odds of such intervention improve.
In this sense, the attack on the nuclear power plant does not have to be entirely bad for Ukrainian prospects in the war. The Ukrainian leadership is rightly horrified by this attack, due to the risks for Ukrainian citizens. But the attack could also mobilize European public opinion on behalf of military intervention for Ukraine. If the war greatly increases chances for the spread of dangerous nuclear radiation, then the likelihood that Germany, France, Turkey and other nations will intervene also greatly increases.
Notice, however, that the Russian position here may be sounder than it at first appears. European citizens care more about radiation in Ukraine than do American citizens, for reasons of simple proximity. Putin may realize he can put Europeans at greater risk so long as he doesn’t provoke an intervention from the U.S. military, which would probably be decisive. It is a risky strategy that he might just get away with.
If you are the Ukrainian government, your incentive is to make the nuclear power plant attack sound as risky and precarious as possible. Indeed, Ukrainian President Volodymyr Zelenskiy has done exactly that.”
I am sorry to say that the column does not have an especially optimistic ending.
From Ryan Petersen at Flexport
“I just couldn’t sit around watching this humanitarian crisis in Ukraine without doing anything about it. So Flexport is organizing a massive airlift of relief goods to refugee camps in Eastern Europe starting next week.
You can read more about the full operation below. It’s inspiring stuff.
We’re looking to raise money to pay for more flights—Flexport is covering the first full cargo plane full of relief goods, but we’re asking others to donate including potential corporate sponsors to help us pay for more flights.
Donations are open at Flexport.org/donate and fully tax-deductible through our 501c3 partners.”
Friday assorted links
1. Graeme Wood Atlantic interview with MBS.
2. “Russian businesses in U.S. face threats, vandalism over invasion.”
3. Avi Schiffman’s “UkraineTakeShelter.com is an independent platform connecting Ukrainian refugees with potential hosts and housing.”
4. Geoffrey Hosking has written (by far) the best book on Russia I know.
5. Fantasy Author Raises $15.4 Million in 24 Hours to Self-Publish (NYT). And Kadryov markets in everything.
6. Fikret Amirov. Very good, moving.
7. “Focused Protection” was a dubious idea from the beginning. Best form of it was to be on the vaccines and antivirals bandwagon! With enthusiasm, not “enthusiasm about natural immunity” >> “enthusiasm about vaccines,” as I have seen from so many. It is vaccines that are focused protection.
8. Data on Russian crypto ownership, and government plans to regulate the sector. And “Train tickets for the short trip from St. Petersburg to Helsinki cost over 9000 euros yesterday.”
9. Should it matter which nationalities and ethnicities are seeking to cross your borders? Relevant to the Nigerians stuck in Ukraine who are not so welcome elsewhere.
I Booked an Airbnb in Kyiv
I booked 5 nights at an Airbnb in Irpin, a heavily bombed city near Kyiv.
Irpin pic.twitter.com/cPomVZKWFS
— Illia Ponomarenko 🇺🇦 (@IAPonomarenko) March 2, 2022
I’m not going. (And I told the host I wasn’t going).
The host replied:
Любі друзі дякуємо за допомогу. На ці гроші ми зможело допомогти сімьям які залишились без будинків. Дякуємо
Dear friends, thank you for your help. With this money we were able to help families left homeless. Thank you
It’s a very strange world in which you can book an apartment in a bombed city thousands of miles away.
Would this form of charity pass the Givewell test? Probably not. Still I am glad to have done it. Not to make light of the situation, but the look on my wife’s face when I told her I had booked an Airbnb in Kyiv was priceless.
NFT markets in everything
Ukraine plans to become the first developed country to issue its own collection of non-fungible tokens, as it looks to capitalise on a flood of crypto donations to back its war against Russia.
Mykhailo Fedorov, Ukraine’s vice-prime minister, announced the plan in a tweet on Thursday and said Kyiv would reveal details of its NFTs soon.
The move is the latest sign of the Ukrainian government embracing digital assets as a way to fund its armed forces in their battle, and comes after it raised more than $270mn in “war bonds”.
One for each Russian tank destroyed? Here is the full FT story, via Natasha.
*The Journey of Humanity*
The author is Oded Galor and the subtitle is The Origins of Wealth and Inequality.

From the Canadian Minister of Transport
A charter aircraft that carried Russian foreign nationals has been held at the Yellowknife airport. We will continue to hold Russia accountable for its invasion of Ukraine.
— Omar Alghabra (@OmarAlghabra) March 3, 2022
Thursday assorted links
Norway Chess cancels Alexander Grischuk
He is kicked out of a forthcoming tournament, even though he has been critical of the war in Ukraine. In case you haven’t already guessed, Grischuk is Russian in his citizenship. This stuff never stays very accurate or fair.
Here is more on Grischuk and other Russian players, a grim and deeply unfair story (in German, covers Nepo, Svidler, Dubov, others who have spoken out). To be clear, I am strongly in support of pulling all tournaments from Russia and Belarus, as FIDE has done. It is targeting the individuals that I object to.
Elsewhere, from an email:
The editors of the “Studies in the History of Philosophy” have decided not to pursue the project of publishing a thematic issue devoted to Russian religious philosophy.
Russian cats are now cancelled too.
I would say this: if you are working in the United States and are from Russia, your chance of a big promotion just went way down, no matter what your political views. They are not going to make Chekhov Captain of the Enterprise, not now at least.
As for the oligarchs, I am all in favor of initiating court cases against Russian law breakers, whether in domestic courts or at The Hague. And if those individuals are found guilty, and the process generates yacht seizure as the appropriate remedy, bring it on. But just taking the yachts without true due process? Nein, Danke.
Jesse Michels interviews me at Hereticon
Jesse’s description was “Wide ranging discussion with the brilliant @tylercowen. Topics include: Satoshi’s identity, Straussian Jesus, the Beatles and UFOs. Taped in early January but he presciently expresses concerns around Russia/Ukraine”
Great fun was had by all, and they added in nice visuals.
Sentences about unemployment
As in the data, the price of risk in our model sharply increases in recessions. The benefit from hiring new workers therefore greatly declines, leading to a large decrease in job vacancies and an increase in unemployment of the same magnitude as in the data.
Yes, nominal wages are sticky but this is the other and all-important side of the hiring equation.
That is from a new and important NBER working paper by Patrick J. Kehoe, Pierlauro Lopez, Virgiliu Midrigan, and Elena Pastorino. There is much more to their general model than that single sentence would indicate.
(Small) markets in everything
Ralph Nader spent a career bashing corporate executives. Now he’s written a book praising some. It’s not going down too well.
Tentatively called “Twelve CEOs I Have Known and Admired,” the book is more than a little off-brand for the man who upended the world of auto safety with the blockbuster “Unsafe at Any Speed” and then attacked corporate behavior in a number of other industries.
Based on a string of rejection letters from publishers, Mr. Nader said he fears he’s been typecast, making any accolades he might have for corporate tycoons a hard sell. His literary agent, Ronald Goldfarb, advised him to change course and go negative, he says.
“He wanted chapters on bad CEOs,” Mr. Nader said of Mr. Goldfarb.
“I didn’t tell him what to write,” Mr. Goldfarb retorts. “I told him what I could sell.” The two parted ways after working on the manuscript for three months.
Mood affiliation strikes again. Nader fans don’t want to positively affiliate with CEOs, and “love letter” types do not always wish to affiliate with Nader. (By the way, here is my 2014 chat with Nader.) Here is the rest of the Jeffrey A. Trachtenberg WSJ article.
How is U.S. urban public safety changing?
This paper argues that changes in human activity during the COVID-19 pandemic led to an unusual divergence between crime rates and victimization risk in US cities. Most violent crimes declined during the pandemic. But analysis using foot traffic data shows that the risk of street crime victimization was elevated throughout 2020; people in public spaces were 15-30 percent more likely to be robbed or assaulted. This increase is unlikely to be explained by changes in crime reporting or selection into outdoor activities by potential victims. Traditional crime rates may present a misleading view of recent changes in public safety.
Here is the paper by Maxim Massenkopf and Aaron Chalfin, via the excellent Samir Varma.
Further Wednesday assorted links
1. The boycott of Russian science. In general I am more comfortable with boycotting the Russian nation directly, rather than aiming at individual “Russians” (how defined?) outside the borders, who may or may not have a legally meaningful link/liability to the Putin government. And simply calling them “oligarchs” does not change that calculus!
2. Ukrainian currency down only ten percent since November.
3. Art works being lent by Russia. So far not yet cancelled.
4. Very good FT piece on the political powerlessness of the Russian oligarchs.
5. Crypto start-ups with no real names attached (NYT), the facts of the article are more interesting than the moralizing.