Shengwu Li
@shengwuli.bsky.social
Econ prof at Harvard. (Mechanism design, market design, behavioral theory.) www.shengwu.li
Reposted by Shengwu Li
I've been working on a new tool, Refine, to make scholars more productive. If you're interested in being among the very first to try the beta, please read on.
Refine leverages the best current AI models to draw your attention to potential errors and clarity issues in research paper drafts.
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Refine leverages the best current AI models to draw your attention to potential errors and clarity issues in research paper drafts.
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July 24, 2025 at 3:24 AM
I've been working on a new tool, Refine, to make scholars more productive. If you're interested in being among the very first to try the beta, please read on.
Refine leverages the best current AI models to draw your attention to potential errors and clarity issues in research paper drafts.
1/
Refine leverages the best current AI models to draw your attention to potential errors and clarity issues in research paper drafts.
1/
Reposted by Shengwu Li
Using time series graphs to make causal claims be like
July 14, 2025 at 12:12 PM
Using time series graphs to make causal claims be like
Reposted by Shengwu Li
Delighted (and honestly a little bit stunned) that our paper “Swap Regret and Correlated Equilibria Beyond Normal-Form Games” was just awarded both the “Best Paper” and “Best Student Paper” at EC! arxiv.org/abs/2502.20229
Swap Regret and Correlated Equilibria Beyond Normal-Form Games
Swap regret is a notion that has proven itself to be central to the study of general-sum normal-form games, with swap-regret minimization leading to convergence to the set of correlated equilibria and...
arxiv.org
July 3, 2025 at 3:21 PM
Delighted (and honestly a little bit stunned) that our paper “Swap Regret and Correlated Equilibria Beyond Normal-Form Games” was just awarded both the “Best Paper” and “Best Student Paper” at EC! arxiv.org/abs/2502.20229
Reminder that N player zero-sum games can represent arbitrary (N-1) player games, by the use of a dummy player.
The New York mayoral candidate mistakenly believes the economy is a zero-sum game, writes Michael Strain of the American Enterprise Institute. https://on.ft.com/44IOZe2
July 2, 2025 at 9:17 AM
Reminder that N player zero-sum games can represent arbitrary (N-1) player games, by the use of a dummy player.
Reposted by Shengwu Li
With rent control in the news, it’s a good moment to recall the research of @rebeccadiamond.bsky.social and co-authors.
They show that strict rent control in San Francisco reduced the availability of rental housing, eventually *raising* rental costs.
doi.org/10.1257/aer....
They show that strict rent control in San Francisco reduced the availability of rental housing, eventually *raising* rental costs.
doi.org/10.1257/aer....
June 26, 2025 at 11:28 PM
With rent control in the news, it’s a good moment to recall the research of @rebeccadiamond.bsky.social and co-authors.
They show that strict rent control in San Francisco reduced the availability of rental housing, eventually *raising* rental costs.
doi.org/10.1257/aer....
They show that strict rent control in San Francisco reduced the availability of rental housing, eventually *raising* rental costs.
doi.org/10.1257/aer....
Reposted by Shengwu Li
Evicting NSF from their building in Washington is pretty revealing. But if they auction off its History Wall, I know which tile I’d bid on. Here’s the list to choose from…
marketdesigner.blogspot.com/2025/06/evic...
marketdesigner.blogspot.com/2025/06/evic...
Evicting Science from D.C.: the NSF building and it's History Wall
marketdesigner.blogspot.com
June 26, 2025 at 1:41 PM
Evicting NSF from their building in Washington is pretty revealing. But if they auction off its History Wall, I know which tile I’d bid on. Here’s the list to choose from…
marketdesigner.blogspot.com/2025/06/evic...
marketdesigner.blogspot.com/2025/06/evic...
Reposted by Shengwu Li
A New Pyramid-Like Shape Always Lands the Same Side Up. A tetrahedron is the simplest Platonic solid. Mathematicians have now made one that’s stable only on one side, confirming a decades-old conjecture. www.quantamagazine.org/a-new-pyrami...
A New Pyramid-Like Shape Always Lands the Same Side Up | Quanta Magazine
A tetrahedron is the simplest Platonic solid. Mathematicians have now made one that’s stable only on one side, confirming a decades-old conjecture.
www.quantamagazine.org
June 26, 2025 at 1:38 PM
A New Pyramid-Like Shape Always Lands the Same Side Up. A tetrahedron is the simplest Platonic solid. Mathematicians have now made one that’s stable only on one side, confirming a decades-old conjecture. www.quantamagazine.org/a-new-pyrami...
Reposted by Shengwu Li
If AI can't kill radiologists' careers, can it really kill anyone's? www.nytimes.com/2025/05/14/t...
Your A.I. Radiologist Will Not Be With You Soon
www.nytimes.com
June 19, 2025 at 1:28 PM
If AI can't kill radiologists' careers, can it really kill anyone's? www.nytimes.com/2025/05/14/t...
What is common knowledge in your field, but shocks outsiders?
If two people have the same priors, and their posteriors for an event A are common knowledge, then those posteriors are equal.
If two people have the same priors, and their posteriors for an event A are common knowledge, then those posteriors are equal.
What is common knowledge in your field, but shocks outsiders?
I'll start: Amazon makes more money out of their Cloud services than out of their e-commerce platform.
I'll start: Amazon makes more money out of their Cloud services than out of their e-commerce platform.
June 17, 2025 at 1:52 PM
What is common knowledge in your field, but shocks outsiders?
If two people have the same priors, and their posteriors for an event A are common knowledge, then those posteriors are equal.
If two people have the same priors, and their posteriors for an event A are common knowledge, then those posteriors are equal.
Reposted by Shengwu Li
Re-upping my advice about how to write a good title and abstract for an academic paper, appropriately called:
"How to Write a Title and Abstract"
Feel free to share this thread, which will focus on titles.
#EconSky #AcademicSky
"How to Write a Title and Abstract"
Feel free to share this thread, which will focus on titles.
#EconSky #AcademicSky
June 11, 2025 at 4:41 PM
Re-upping my advice about how to write a good title and abstract for an academic paper, appropriately called:
"How to Write a Title and Abstract"
Feel free to share this thread, which will focus on titles.
#EconSky #AcademicSky
"How to Write a Title and Abstract"
Feel free to share this thread, which will focus on titles.
#EconSky #AcademicSky
Jason Hartline likes cocktails with lemon juice.
June 3, 2025 at 1:30 AM
Jason Hartline likes cocktails with lemon juice.
Reposted by Shengwu Li
New working paper alert: we provide a model of post-hoc rationalizations, driven by motives of (self-)esteem. We show how this can lead to groupthink, polarization, and a preference for echo chambers.
www.ifo.de/sites/defaul...
www.ifo.de/sites/defaul...
May 20, 2025 at 6:54 PM
New working paper alert: we provide a model of post-hoc rationalizations, driven by motives of (self-)esteem. We show how this can lead to groupthink, polarization, and a preference for echo chambers.
www.ifo.de/sites/defaul...
www.ifo.de/sites/defaul...
Reposted by Shengwu Li
Our policy is already too long to cover all possible scenarios, I am told (repeatedly...), but it is very clear "access to the data and code is nonexclusive to the authors" in line 1 ... www.aeaweb.org/journals/dat... Need an exception? See line 3, and a discussion w/ editor + me ensues.
Data and Code Availability Policy
www.aeaweb.org
May 19, 2025 at 11:29 PM
Our policy is already too long to cover all possible scenarios, I am told (repeatedly...), but it is very clear "access to the data and code is nonexclusive to the authors" in line 1 ... www.aeaweb.org/journals/dat... Need an exception? See line 3, and a discussion w/ editor + me ensues.
Maybe journals should have a policy that data from anonymous sources will be verified by the journal before publication.
The editor could contact the firm, to verify that it exists and that the study was conducted as stated.
@aeadata.bsky.social is this feasible or am I missing something?
The editor could contact the firm, to verify that it exists and that the study was conducted as stated.
@aeadata.bsky.social is this feasible or am I missing something?
May 18, 2025 at 11:00 PM
Maybe journals should have a policy that data from anonymous sources will be verified by the journal before publication.
The editor could contact the firm, to verify that it exists and that the study was conducted as stated.
@aeadata.bsky.social is this feasible or am I missing something?
The editor could contact the firm, to verify that it exists and that the study was conducted as stated.
@aeadata.bsky.social is this feasible or am I missing something?
In hindsight, if a major material science firm had found a way to make its best material scientists 80% better, there’s no way it would stay anonymous. It would shout it from the rooftops, and put it in its earnings call.
This is an argument that should have occurred to economists.
This is an argument that should have occurred to economists.
May 17, 2025 at 3:07 PM
In hindsight, if a major material science firm had found a way to make its best material scientists 80% better, there’s no way it would stay anonymous. It would shout it from the rooftops, and put it in its earnings call.
This is an argument that should have occurred to economists.
This is an argument that should have occurred to economists.
Wow, nothing beats making that one conjecture that turns the idea into a paper, and then proving it. Never gets old.
May 11, 2025 at 2:22 AM
Wow, nothing beats making that one conjecture that turns the idea into a paper, and then proving it. Never gets old.
Reposted by Shengwu Li
The Chicago Pope implies the existence of a New Keynesian Pope and a Behavioral Pope
May 8, 2025 at 6:05 PM
The Chicago Pope implies the existence of a New Keynesian Pope and a Behavioral Pope
Reposted by Shengwu Li
Modeling the conclave? You’ll need cardinal utilities
May 7, 2025 at 11:00 PM
Modeling the conclave? You’ll need cardinal utilities
Singapore ministers defend meals taken with money launderer.
The perils of zero accountability.
The perils of zero accountability.
May 6, 2025 at 2:36 PM
Singapore ministers defend meals taken with money launderer.
The perils of zero accountability.
The perils of zero accountability.
Reposted by Shengwu Li
Congrats to Sergiu Hart, perhaps the quickest thinker I know, and a wonderful mentor, coauthor, and person, for being elected as an International Member of the National Academy of Sciences!
www.nasonline.org/news/2025-na...
www.nasonline.org/news/2025-na...
National Academy of Sciences Elects Members and International Members - NAS
WASHINGTON — The National Academy of Sciences announced today the election of 120 members and 30 international members in recognition of their distinguished and continuing achievements in original res...
www.nasonline.org
May 4, 2025 at 3:45 PM
Congrats to Sergiu Hart, perhaps the quickest thinker I know, and a wonderful mentor, coauthor, and person, for being elected as an International Member of the National Academy of Sciences!
www.nasonline.org/news/2025-na...
www.nasonline.org/news/2025-na...
Reposted by Shengwu Li
Remember when you first learned about genetics at school? All those fascinating examples of human traits that are each apparently determined by just a single gene? Time to check in on some of your favourites to see how they’re doing. 🧬🧵🧪 1/n
May 2, 2025 at 2:50 PM
Remember when you first learned about genetics at school? All those fascinating examples of human traits that are each apparently determined by just a single gene? Time to check in on some of your favourites to see how they’re doing. 🧬🧵🧪 1/n
Power corrupts. It’s time for Singapore to become a democracy.
Opinion | My Father Founded Singapore. He Would Be Troubled by What It’s Become. (Gift Article)
The nation’s current leaders are not living up to my father’s high standards of governance, and Singapore is suffering as a result.
www.nytimes.com
May 1, 2025 at 2:50 AM
Power corrupts. It’s time for Singapore to become a democracy.
💡 Open science: A team of researchers at Shandong University has attempted to replicate Oprea (2024 AER). The results do not replicate.
Oprea 2024 reported an online lab experiment, and found that prospect theory anomalies occur not only for lotteries, but also for deterministic 'mirrors'.
Oprea 2024 reported an online lab experiment, and found that prospect theory anomalies occur not only for lotteries, but also for deterministic 'mirrors'.
April 30, 2025 at 3:33 PM
💡 Open science: A team of researchers at Shandong University has attempted to replicate Oprea (2024 AER). The results do not replicate.
Oprea 2024 reported an online lab experiment, and found that prospect theory anomalies occur not only for lotteries, but also for deterministic 'mirrors'.
Oprea 2024 reported an online lab experiment, and found that prospect theory anomalies occur not only for lotteries, but also for deterministic 'mirrors'.
Reposted by Shengwu Li
My paper on algorithmic pricing, joint with In-Koo Cho, is now online at the Journal of Economic Theory.
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Learning underspecified models
This paper examines learning dynamics under non-parametric model uncertainty. We choose the monopolistic profit maximization problem (Myerson (1981)) …
www.sciencedirect.com
April 29, 2025 at 4:39 PM
My paper on algorithmic pricing, joint with In-Koo Cho, is now online at the Journal of Economic Theory.
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...