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Wojtek Kopczuk

@wwwojtekk.bsky.social
12K followers 260 following 1.4K posts

Economist, tax policy/inequality. Professional skeptic. Anti-illiberal. www.columbia.edu/~wk2110/index.html @wwwojtekk at various other websites

PostsRepliesMedia
Wojtek Kopczuk @wwwojtekk.bsky.social · 11/07/2026
Gripping
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Wojtek Kopczuk @wwwojtekk.bsky.social · 10/06/2026
Not sure if there is more than this, and I think it's rooted in its charter as "nonpartisan". I don't think it's an actual constraint on research but it is a constraint on explicit advocacy
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Wojtek Kopczuk @wwwojtekk.bsky.social · 10/06/2026
Iykyk
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Wojtek Kopczuk @wwwojtekk.bsky.social · 09/06/2026
Unsurprisingly, it's mostly a shrug here except for a few people who pretend it is ok. I'll add another one in this genre that made my jaw drop.
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Wojtek Kopczuk @wwwojtekk.bsky.social · 08/05/2026
is there a way to have all the different sides of this issue lose?
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Wojtek Kopczuk @wwwojtekk.bsky.social · 05/05/2026
Bipartisan view of the US government budget
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Wojtek Kopczuk @wwwojtekk.bsky.social · 05/05/2026
Grisly, but you have to be impressed by crocodiles using drones
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Wojtek Kopczuk @wwwojtekk.bsky.social · 28/04/2026
Ok, the infantilization of college students has gone too far. Now there is a parents' union?
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Wojtek Kopczuk @wwwojtekk.bsky.social · 23/04/2026
I've known since 1973 that this would be about Marx
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Wojtek Kopczuk @wwwojtekk.bsky.social · 21/04/2026
yeah
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Wojtek Kopczuk @wwwojtekk.bsky.social · 16/04/2026
💔 Their friendship could survive only one Papal assault
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Wojtek Kopczuk @wwwojtekk.bsky.social · 14/04/2026
No he can't
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Wojtek Kopczuk @wwwojtekk.bsky.social · 10/04/2026
Weak. Fewer people, easier to take over than Greenland.
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Wojtek Kopczuk @wwwojtekk.bsky.social · 03/04/2026
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Wojtek Kopczuk @wwwojtekk.bsky.social · 29/03/2026
Halloween year round in National Parks
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Wojtek Kopczuk @wwwojtekk.bsky.social · 21/03/2026
This is how you implement "cap-and-trade" in practice, kids
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Wojtek Kopczuk @wwwojtekk.bsky.social · 06/03/2026
The UI team even added an arrow there. Unreal
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Wojtek Kopczuk @wwwojtekk.bsky.social · 06/03/2026
I have to admit that Hormuz is a very clever design that keeps things interesting. Kudos to Slartibartfast. You can't convince me that it was an accident.
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Wojtek Kopczuk @wwwojtekk.bsky.social · 04/03/2026
Is this the first 5.16a?
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Wojtek Kopczuk @wwwojtekk.bsky.social · 28/01/2026
So much to unpack
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Wojtek Kopczuk @wwwojtekk.bsky.social · 22/01/2026
The lawyer said with a straight face that it'd take an act of Congress to stop the president from sending military to deal with the Beatles
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Wojtek Kopczuk @wwwojtekk.bsky.social · 05/01/2026
I totally expected the attempts to seize private property, but seizing the CEA took me by surprise
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Wojtek Kopczuk @wwwojtekk.bsky.social · 01/01/2026
I don't have five minutes to read it, but in my personal case I'm pretty sure that the biggest factor influencing it would be just watching it
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Wojtek Kopczuk @wwwojtekk.bsky.social · 29/12/2025
Received on December 23rd. Luckily, it is a European publisher so "two working days" means it's due on January 15.
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Wojtek Kopczuk @wwwojtekk.bsky.social · 25/12/2025
I've been told that the other site is toxic but this one is not
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Wojtek Kopczuk @wwwojtekk.bsky.social · 23/12/2025
Perhaps in the same sense that Becker was a sociologist
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Wojtek Kopczuk @wwwojtekk.bsky.social · 21/12/2025
Wikipedia editors have grudges
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Wojtek Kopczuk @wwwojtekk.bsky.social · 14/12/2025
'My papers say what I have researched. And therefore neither I nor my papers have any more to say. I am a researcher, not a speaker. Do you hear me? Actually, if you're going to interview anyone, you can interview my papers. If you don't find an answer there, then that's your own fault.'
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Wojtek Kopczuk @wwwojtekk.bsky.social · 14/12/2025
Here is why you need local knowledge in your research
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Wojtek Kopczuk @wwwojtekk.bsky.social · 10/12/2025
We're organizing a conference to honor life and work of Shlomo Yitzhaki (he passed away in 2023). He made major contributions to work on inequality and tax policy design, in economics and statistics. He was also my co-author and friend👇 Please consider submitting and attending!
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Wojtek Kopczuk @wwwojtekk.bsky.social · 08/12/2025
Substitution response to the fertility crisis. Markets always find the way.
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Wojtek Kopczuk @wwwojtekk.bsky.social · 07/12/2025
This is many dollars higher than my reservation price
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Wojtek Kopczuk @wwwojtekk.bsky.social · 07/12/2025
Spotify baited me and then offended
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Wojtek Kopczuk @wwwojtekk.bsky.social · 07/12/2025
It's about coffee but perhaps helpful to add some adjectives for wines that you might consider sampling for wine-economics.org/wp-content/u...
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Wojtek Kopczuk @wwwojtekk.bsky.social · 06/12/2025
I'm traveling you nanny app, damn it.
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Wojtek Kopczuk @wwwojtekk.bsky.social · 30/11/2025
And before someone feels the urge to correct me, I am not a progressive
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Wojtek Kopczuk @wwwojtekk.bsky.social · 27/11/2025
Yes?
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Wojtek Kopczuk @wwwojtekk.bsky.social · 24/11/2025
In the alternative universe, America in the early 1980s (disastrous 1970s, back to back recessions, high inflation, Iran's hostage crisis, crime, drugs, HIV epidemic starting up, freshly elected president who ran against the system) was doing well
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Wojtek Kopczuk @wwwojtekk.bsky.social · 11/11/2025
I was aware of this case and it was indeed a very dumb one to criminally prosecute, but I still wonder if Trump thinks he has the power to grant him the FKT (fastest known time), the claim that was rejected as the result of this debacle? www.nytimes.com/2025/11/11/w...
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Wojtek Kopczuk @wwwojtekk.bsky.social · 09/11/2025
He is learning from the best who to blame for his own policy
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Wojtek Kopczuk @wwwojtekk.bsky.social · 06/11/2025
He added a control variable and thinks that he now has a causal estimate
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Wojtek Kopczuk @wwwojtekk.bsky.social · 25/10/2025
I knew you were my fellow Koch brother dude
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Wojtek Kopczuk @wwwojtekk.bsky.social · 24/10/2025
"wildly popular"
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Wojtek Kopczuk @wwwojtekk.bsky.social · 19/10/2025
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Wojtek Kopczuk @wwwojtekk.bsky.social · 05/10/2025
It's always funny to read things like "anti-immigrant Czech-Japanese entrepreneur"
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Wojtek Kopczuk @wwwojtekk.bsky.social · 03/10/2025
Soccer is a globalist sport and it is hard to imagine an organization better equipped than FIFA in navigating corruption. Trump stands no chance.
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Wojtek Kopczuk @wwwojtekk.bsky.social · 02/10/2025
DHS: Where was this lead pencil made? ME: State of Washington, mines in South America, Malaya, and other places I don't even know about, by thousands of people who don't speak the same language, practice different religions, and might hate each other if they ever met DHS: denied
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Wojtek Kopczuk @wwwojtekk.bsky.social · 26/09/2025
It performs pretty decently in soccer too, 20th out of 55 on UEFA list
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Wojtek Kopczuk @wwwojtekk.bsky.social · 26/09/2025
You might sneer at that, but you should not. He has in fact unparalleled expertise on using language that incites violence and terrorism.
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Wojtek Kopczuk @wwwojtekk.bsky.social · 24/09/2025
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