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Blog of Tyler Cowen and Alex Tabarrok, both of whom teach at George Mason University.
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What I’ve been reading

2026-04-03 12:38:47

1. Allister Sparks, The Mind of South Africa: The Story of the Rise and Fall of Apartheid.  This history book actually tries to explain to the reader how things were.  Oh such books are so rare!  (Why is that?)  Definitely recommended, written at the very end of the apartheid era which gives it yet another angle of interest.

2. Nic von Wielligh and Lydia von Wielligh-Steyn, The Bomb: South Africa’s Nuclear Weapons Programme.  I had been looking for a book on this topic for a long time, and finally I found the right one in a South African bookshop.  They did build six atomic bombs, almost seven, and this is the story of how that started and was later reversed.  Hundreds of pages of substantive detail, and I had not realized how much the conflict in Angola, and Cuban/Soviet involvement, was a major factor in the whole episode.

3. David Stuart, The Four Heavens: A New History of the Ancient Maya.  We keep on learning lots about the Maya, and this is the best book to follow what has been going on.  Well-written and clear, and it does not numb your mind with details you may not care about.

4. Mark B. Smith, Exit Stalin: The Soviet Union as a Civilization 1953-1991.  I am seeing an increasing number of excellent books on what the Soviet Union really was.  This one is well written, broad in scope, and yet rich in detail, treating the covered era as a living, breathing time in human history.  It makes the time and place imaginable.  The book also goes a long way toward disaggregating different Soviet eras, rather than just the end of Stalinism.

5. Kevin Hartnett, The Proof is in the Code: How a Truth Machine is Transforming Math and AI.  A very useful book about the history of proving math theorems by computer.

The post What I’ve been reading appeared first on Marginal REVOLUTION.

Sam Altman’s prediction has come through

2026-04-02 22:35:01

From his house in Los Angeles, Mr. Gallagher, 41, used A.I. to write the code for the software that powers his company, produce the website copy, generate the images and videos for ads and handle customer service. He created A.I. systems to analyze his business’s performance. And he outsourced the other stuff he couldn’t do himself.

His start-up, Medvi, a telehealth provider of GLP-1 weight-loss drugs, got 300 customers in its first month. In its second month, it gained 1,000 more. In 2025, Medvi’s first full year in business, the company generated $401 million in sales.

Mr. Gallagher then hired his only employee, his younger brother, Elliot. This year, they are on track to do $1.8 billion in sales.

Here is more from Erin Griffith at the NYT.   Maybe Sam said “one person” running a billion dollar company, but if the two are closely genetically related still I will count this.

The post Sam Altman’s prediction has come through appeared first on Marginal REVOLUTION.

My very interesting Conversation with Arthur C. Brooks

2026-04-02 12:56:24

Here is the audio, video, and transcript.  Here is part of the episode summary:

Tyler and Arthur cover how scarcity makes savoring possible and why knowing you’ll die young sharpens the mind, what twin studies tell us about the genetics of well-being and why that’s not actually depressing, the four habits of the genuinely happy, the placebo theory of happiness books, curiosity as an evolved positive emotion, the optimal degree of self-deception, why Arthur chose Catholicism rather than Orthodoxy, what the research says about accepting death, how he became an economist via correspondence school, AI’s effect on think tanks, the future of classical music, whether Trumpism or Reaganism is the equilibrium state of American conservatism, whether his views on immigration have changed, what he and Oprah actually agree on, which president from his lifetime he most admires, Barcelona versus Madrid, what 60-year-olds are especially good at, why he’s reading Josef Pieper, how he’ll face death, and much more.

Excerpt:

COWEN: What do you think of the view that books on happiness or the meaning of life, they’re a kind of placebo? They don’t help directly, but you feel you’ve done something to become happier, and the placebo is somewhat effective.

BROOKS: I think that there’s probably something to that, although there’s some pretty interesting new research that shows that the placebo effect is actually not real. Have you seen some of that new research?

COWEN: Yes, but I don’t believe it. Nocebos also seem to work in many situations.

BROOKS: I know. I take your broader point. I take your broader point. I think that the reason for that is that when people read most of the self-improvement literature, not just happiness literature, what happens is that they get a flush of epiphany, a new way of thinking. That feels really good. That feels really inspirational. The problem is it doesn’t take root.

It’s like the seeds that are thrown on a path in the biblical parable. They don’t go through the algorithm that I just talked about, and so not all of these things can be compared. I would not have gotten into this line of research and this line of teaching if I thought that it was just going to add another book to a long line of self-improvement books that make people feel good but don’t ultimately change their lives.

COWEN: Say a person reads a new and different book on happiness once a year at the beginning of the year. Now, under the placebo view, that’s a fine thing to do. It’ll get you a bit happier each year. Under your view, it seems there’s something wrong. Isn’t the placebo view doing a bit better there? You should read a book on happiness every year, a different one. It’ll revitalize you a bit. Whether or not it’s new only matters a little.

BROOKS: Yes. It might remind you of some things that you knew to be the truth that you had fallen away from. One of the things that I like to do is I like to read a good book by one of the church fathers, for example. They’re more or less saying the same thing. It reminds me of something that I learned as a boy and that I’ve forgotten as an adult. It might actually remind me to come back to many of these practices and many of these views.

I think that there are real insights. There’s real value that can come from science-based knowledge about how to live a better life. I think that you and I are both dedicated to science in the public interest and also science in the private interest as well. I think there is some good to be gotten through many of these ideas. Not all. Once again, not all happiness literature is created equal.

And:

COWEN: Why not cram all that contemplation of death into your last three months rather than your last 18 months? Do intertemporal substitution, right? Accelerate it. Ben Sasse probably is facing a pretty short timeline, but he’s done a remarkable job, even publicly, of coming to terms with what’s happening. Isn’t that better than two years of the same?

And:

COWEN: I think it’s fair to say what we call the right wing in America, it’s become much, much more Trumpy. Does this shift you to the left or make you question what the right wing was to begin with, or do you just feel lost and confused, or do you say, that’s great, I’m more Trumpy, too? How have you dealt with that emotionally and intellectually?

BROOKS: Yes. I’ll answer, but you’re going to have to answer after me, will you?

COWEN: Sure.

Interesting throughout.

The post My very interesting Conversation with Arthur C. Brooks appeared first on Marginal REVOLUTION.