Wednesday assorted links
1. Will human enhancement win without thinking?
2. February issue of Works in Progress.
3. Proximity bias.
5. New paper on AI and task automation. And John Cochrane is wowed by Refine.
6. Largest survey dataset on human sexuality in the world.
7. The Anthropic-DOD situation.
8. “Measurability is the new fault line.” Important work, worth a ponder.
Public Finance in the Age of AI: A Primer
Transformative artificial intelligence (TAI) – machines capable of performing virtually all economically valuable work – may gradually erode the two main tax bases that underpin modern tax systems: labor income and human consumption. We examine optimal taxation across two stages of artificial intelligence (AI)-driven transformation. First, if AI displaces human labor, we find that consumption taxation may serve as a primary revenue instrument, with differential commodity taxation gaining renewed relevance as labor distortions lose their constraining role. In the second stage, as autonomous artificial general intelligence (AGI) systems both produce most economic value and absorb a growing share of resources, taxing human consumption may become an inadequate means of raising revenue. We show that the taxation of autonomous AGI systems can be framed as an optimal harvesting problem and find that the resulting tax rate on AGI depends on the rate at which humans discount the future. Our analysis provides a theoretically grounded approach to balancing efficiency and equity in the Age of AI. We also apply our insights to evaluate specific proposals such as taxes on robots, compute, and tokens, as well as sovereign wealth funds and windfall clauses.
That is from Anton Korinek and Lee Lockwood.
“Tough on crime” is good for young men
Using data from hundreds of closely contested partisan elections from 2010 to 2019 and a vote share regression discontinuity design, we find that narrow election of a Republican prosecutor reduces all-cause mortality rates among young men ages 20 to 29 by 6.6%. This decline is driven predominantly by reductions in firearm-related deaths, including a large reduction in firearm homicide among Black men and a smaller reduction in firearm suicides and accidents primarily among White men. Mechanism analyses indicate that increased prison-based incapactation explains about one third of the effect among Black men and none of the effect among White men. Instead, the primary channel appears to be substantial increases in criminal conviction rates across racial groups and crime types, which then reduce firearm access through legal restrictions on gun ownership for the convicted.
That is from a new paper by Panka Bencsik and Tyler Giles. Via M.
*Introduction to Quantitative Economics*
By Jesse M. Shapiro, just out from MIT Press.
The Macroeconomic Effects of Tariffs
We study the macroeconomic effects of tariff policy using U.S. historical data from 1840–2024. We construct a narrative series of plausibly exogenous tariff changes – based on major legislative actions, multilateral negotiations, and temporary surcharges – and use it as an instrument to identify a structural tariff shock. Tariff increases are contractionary: imports fall sharply, exports decline with a lag, and output and manufacturing activity drop persistently. The shock transmits through both supply and demand channels. Prices rise in the full sample but fall post-World War II, a pattern consistent with changes in the monetary policy response and with stronger international retaliation and reciprocity in the modern trade regime.
That is from a new NBER working paper by
Tuesday assorted links
1. Did NAFTA make America less healthy?
2. Economics-related ideas for fixing NBA tanking (NYT).
3. Shyam Sankar.
4. Are hard courts eating the tour?
5. Ezra and Jack Clark on agents (NYT).
6. Maybe the free money is gone by now? Alternatively, perhaps the aliens are enriching themselves?
*Being and Time: An Annotated Translation*
Translated from the German by Cyril Welch.
Periodically I am asked if I have read Being and Time, and I always give the same response: “I have looked at every page.”
I also have spent time with it in German, though not for every page. But have I read it? Read it properly? Can anyone?
Is the book worth some study? Yes. But.
People, this volume is the best chance you are going to get.
Is there an aggregate demand problem in an AGI world?
No. Let’s say AI is improving very rapidly, and affecting the world more rapidly and more radically than I think is plausible. Let’s just say.
All of a sudden there are incredible things you can spend your money on.
Since there is (possibly) radical deflation, you might be tempted to just hold all your money and buy nothing. Pick vegetables from your garden. But the high marginal utility of the new goods and services will get you to spend, especially since you know that plenitude will bring you, in relative terms, a lower marginal utility for marginal expenditures in the future.
You might even go crazy spending. If nothing else, buy new and improved vegetable seeds for your garden. That same example shows that spending is robust to you losing your job, even assuming no reemployment is possible. In this world, there are significant Pigou effects on wealth.
Fed policy has no problem mattering in this world. Other people of course will wish to use the new Fed-sprayed liquidity to invest. They might even invest in AI-related goods and services, not all of which will be controlled by “billionaires.”
Liquidity trap arguments, if they are to work at all, require a pretty miserable environment for investment and also consumption.
Note by the way, that liquidity traps were supposed to apply to currency only! If you try to apply the concept to money more generally, when most forms of holding money bear interest rates of return, the whole concept collapses.
So there is not an aggregate demand problem in this economy, even if the social situation feels volatile or uncomfortable. After that, Say’s Law holds. If AI produces a lot more stuff, income is generated from that and the economy keeps going, whether or not the resulting distribution pleases your sense of morality. Along the way, prices adjust as need be. If unemployment rises significantly, prices fall too, all the more. I am not saying everyone ends up happy here, but you cannot have a) a flood of goods and services, b) billions accruing to the AI owners, without also c) prices are at a level where most people can afford to buy a whole bunch of things. Otherwise, where do you think all the AI revenue is coming from? The new output has to go somewhere, and sorry people it is simply not all trapped in currency hoards. Be just a little Walrasian here, please. (I would call it Huttian instead.)
Besides, why assume that “the machines” here are reaping all the surplus? Are they the scarce factor of production? Maybe it is hard to say in advance, but do not take any particular assumptions for granted here, ask to see them spelt out. One simple scenario is that the regions with energy and data centres become much wealthier, and people need to move to those areas. Maybe they do not do this quickly enough, a’la our earlier history with the Rust Belt. That is a problem worth worrying about, but it is nothing like the recent collapse concerns that have been circulating.
The whole Citrini scenario is incorrect right off the bat. Very little of it is based on sound macroeconomic reasoning. See Eli’s very good comments too. Nicholas also. Dare I say they should have consulted with the AIs for a bit longer?
The Software Upgrade in Chinese Civic Behaviour
I have not been to China recently enough to judge these claims:
Behaviour is notoriously harder to engineer than buildings. A recent trip to the Fragrant Hills in western Beijing on a newly constructed metro line, had me marveling at the improved crowd-management. Despite massive groups of domestic tourists from around the country thronging the area, in what would not-so-long-ago have been a scenario for a potential stampede, the crowds moved in relative order. The park environs were spick and span with no litter in sight; not a single old codger sneaking a cigarette.
There was some amount of strident rule-announcing on loudspeakers: stay on the designated tracks, no smoking etc., but overall, it was possible to enjoy the natural beauty, notwithstanding the hordes of day-trippers. The toilets were not fragrant, despite the nomenclature of the spot itself, but they were clean, and the seats were free of the tell-tale footprints that indicate squatting rather than sitting. Barely anyone gave me, an obvious foreigner, a second glance. In contrast, there was a time in 2002 when a cyclist fell off his bike in his shock at having spotted dark-skinned me walking along a road in the outskirts of Beijing.
So how had the Chinese been pacified/disciplined/habituated to ways of behaviour that went so against their until-very-recent, loophole-finding, chaos-shuffling, phlegm-expectorating deportment in public spaces?
The answer, as answers to sociological questions invariably are, is multipronged.
Some of it is more money.
Here is more by Pallavi Aiyar. Via Malinga Fernando.
Monday assorted links
1. “Nigeria’s industrialization fails to gather steam after 65 years.”
2. Did Eastern Europe produce that many slaves?
3. Vitalik on AI and governance.
4. Does AI put women at a disadvantage? (FT)
6. I wonder what their portfolios look like. Maybe they just bought a lot of Nvidia and consider themselves prophets. Here is an economics-motivated response, though it has some problems too, such as underrating Say’s Law, which is not always false. It is not in reality that complicated, but over the years we have talked ourselves into a lot of dubious macro mechanisms.
7. More on the new “kingpin” warfare strategies.
8. From a week ago: “Derrotar a Cártel Jalisco sin incendiar el país.“
Peru’s new President taps Hernando de Soto to be prime minister
Here is the Bloomberg article. Here is previous MR coverage of de Soto. Here is Wikipedia on de Soto.
Daniel Litt on AI and Math
Daniel Litt is a professor of mathematics at the University of Toronto. He has been active in evaluating AI models for many years and is generally seen as a skeptic pushing back at hype. He has a very interesting statement updating his thoughts:
In March 2025 I made a bet with Tamay Besiroglu, cofounder of RL environment company Mechanize, that AI tools would not be able to autonomously produce papers I judge to be at a level comparable to that of the best few papers published in 2025, at comparable cost to human experts, by 2030. I gave him 3:1 odds at the time; I now expect to lose this bet.
Much of what I’ll say here is not factually very different from what I’ve written before. I’ve slowly updated my timelines over the past year, but if one wants to speculate about the long-term future of math research, a difference of a few years is not so important. My trigger for writing this post is that, despite all of the above, I think I was not correctly calibrated as to the capabilities of existing models, let alone near-future models. This was more apparent in the mood of my comments than their content, which was largely cautious.
To be sure, the models are not yet as original or creative as the very best human mathematicians (who is?) but:
Can an LLM invent the notion of a scheme, or of a perfectoid space, or whatever your favorite mathematical object is? (Could I? Could you? Obviously this is a high bar, and not necessary for usefulness.) Can it come up with a new technique? Execute an argument that isn’t “routine for the right expert”? Make an interesting new definition? Ask the right question?
…I am skeptical that there is any mystical aspect of mathematics research intrinsically inaccessible to models, but it is true that human mathematics research relies on discovering analogies and philosophies, and performing other non-rigorous tasks where model performance is as yet unclear.
Podcast with Jake Sullivan and Jon Finer
Mostly about geopolitics, plenty of fresh content. And here is the transcript. Excerpt:
Jon Finer:
Should the United States be willing to take military action to defend Taiwan? It’s a thorny question for politicians to answer, but we’d be interested in your view.
Tyler Cowen:
Well, this is what economists would call a mixed strategy. Ex-ante, we should have strategic ambiguity, and not just say, we’re not going to defend Taiwan. And when Joe Biden said, “Well, we are going to defend Taiwan,” I was quite happy.
Jon Finer:
Four times. Four times.
Tyler Cowen:
Four times, yes. I know there’s different versions of how it was talked back and the like, but it should be unclear. That said, when push comes to shove, if China has made its move, you have to look at what are the terms of the deal? What are they going to do with TSMC to our best knowledge? What’s the domestic quality chip production in the United States? How do we feel about Japan and maybe South Korea getting nuclear weapons? Can South Korea remain an autonomous nation? Those are a lot of balls to juggle and they’re all hard to judge at this moment. But I think ex-ante, we should definitely create some risk that we will go to war over Taiwan, but then make the best decision ex-post. But China knows that too, right? They’re not fools. They’ve studied game theory.
Jake Sullivan:
Tyler, I’m going to put you down as that being Tyler Cowen’s version of strategic ambiguity.
Tyler Cowen:
It may not be that different from your version.
Jake Sullivan:
Exactly.
Recommended, and I also talk about my secret, unpublished China book, still pending at Tsinghua, almost certainly forever. And we cover UAPs and curling as well.
I guess Mexico is solving for the equilibrium?
For some while I have wondered what would happen if the U.S. military sought to assist Mexico in taking out one of the top drug lords. I suppose now we are finding out. A few points:
1. There is a good chance a few more drug lords will be hit. It makes no sense to get involved just to take out one guy (supply is elastic!). Sheinbaum is doing this, so it is not just the oddities of Trumpland at work here. Presumaby the goal is to shift the entire equilibrium.
2. The cartels would do better to lay low for a while, rather than making this a big public issue. The virulence of their response indicates they are probably pretty scared. Of course the actual decisions here are being taken by (threatened) individuals, not by the (persisting) “cartels.”
3. “Cartels” is an overused word here. They are more like loose syndicates, and by no means are they always colluding with each other.
4. Perhaps there is a new “Trump doctrine,” namely to focus on going after lead individuals, rather than governments or institutional structures. We already did that in Venezuela, and there is talk of that being the approach in Iran. If so, that is a change in the nature of warfare, and of course others may copy it too, including against us. Is there a chance they have tried already?
5. With this action, which seems to have U.S: involvement at least on the intelligence side (possibly more), we are also sending a message to Iran.
6. I believe my post from this morning is holding up pretty well. What the U.S. is supplying here is “more decisive action,” rather than some new, detailed understanding of the Mexican dilemma. See also my Free Press Latin America column from October.
7. In its most extreme instantiation, today’s action represents a willingness of the U.S. to get involved in a Mexican civil war of sorts. I do not expect matters to take that path, as the last time U.S. troops had direct involvement in Mexico was 1916-1919. “Convergence to some warning shots” is a more likely equilibrium outcome here. Nonetheless such an escalatory scenario is not off the table, do note that American foreign policy has been returning to much earlier eras in a number of regards.
8. This story is not over.