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Chris Aitken

@chrisaitken.bsky.social
374 followers 1.5K following 10 posts

Economist and Data Scientist. Trying to do interesting things with interesting data 🏴󠁧󠁢󠁳󠁣󠁴󠁿🇬🇧

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Reposted by Chris Aitken
Tim Harford @timharford.ft.com · 11/03/2026
Of honey bees, long shots, and the usefulness of useless knowledge as.ft.com/r/80525f53-e...
as.ft.com
The usefulness of useless knowledge
[FREE TO READ] Politicians aren’t the best judges of the merits of scientific research
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Emily Riederer @emilyriederer.bsky.social · 10/01/2026
Weeks after writing about how the best ideas bleed btwn R and python, I find out from @stephenturner.us 's excellent blog that the #rstats world is attempting their own Rust-based analog to `uv` (for deps mgmt not packaging) Haven't tried but neat to watch a2-ai.github.io/rv-docs/
a2-ai.github.io
Welcome to rv
rv - A fast, declarative, R package manager
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Robert Metcalfe @rmetcalfe.bsky.social · 10/01/2026
The AEA has posted eight "Recent Developments" lectures exploring highly topical issues in economics, presented by the best scholars in the field: www.aeaweb.org/conference/w... Well worth a watch!
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Michael Clemens @mclem.org · 03/01/2026
This online, PhD-level course in the economics of innovation is a huge opportunity. Taught by some of the world's top scholars on this: @heidiwilliams.bsky.social, Chad Jones, Azoulay, van Reenen, many others! Co-sponsor @ifp.bsky.social If you're admitted, it's free. Applications due January 9th!
ifp.org
Economics of Ideas, Science, and Innovation Online PhD Short Course | Institute for Progress
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Paul Goldsmith-Pinkham @paulgp.com · 17/11/2025
New paper with @instrumenthull.bsky.social and Michal Kolesár on leniency/judge IV designs. This article is targeted for the Journal of Economic Perspectives, and so we wrote it with the goal of being accessible to a wide range of users, including advanced undergrads!🧵 arxiv.org/abs/2511.03572
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Andrew Heiss @andrew.heiss.phd · 17/11/2025
I recently discovered Conventional Comments (conventionalcomments.org) for providing a pseudo-standard set of labels for feedback and just tried it for an article review and it was really helpful to specify issues vs. thoughts vs. suggestions, etc. Hopefully it's helpful for the authors too!
We strongly suggest using the following labels:

praise:	Praises highlight something positive. Try to leave at least one of these comments per review. Do not leave false praise (which can actually be damaging). Do look for something to sincerely praise.
nitpick:	Nitpicks are trivial preference-based requests. These should be non-blocking by nature.
suggestion:	Suggestions propose improvements to the current subject. It’s important to be explicit and clear on what is being suggested and why it is an improvement. Consider using patches and the blocking or non-blocking decorations to further communicate your intent.
issue:	Issues highlight specific problems with the subject under review. These problems can be user-facing or behind the scenes. It is strongly recommended to pair this comment with a suggestion. If you are not sure if a problem exists or not, consider leaving a question.
todo:	TODO’s are small, trivial, but necessary changes. Distinguishing todo comments from issues: or suggestions: helps direct the reader’s attention to comments requiring more involvement.
question:	Questions are appropriate if you have a potential concern but are not quite sure if it’s relevant or not. Asking the author for clarification or investigation can lead to a quick resolution.
thought:	Thoughts represent an idea that popped up from reviewing. These comments are non-blocking by nature, but they are extremely valuable and can lead to more focused initiatives and mentoring opportunities.
chore:	Chores are simple tasks that must be done before the subject can be “officially” accepted. Usually, these comments reference some common process. Try to leave a link to the process description so that the reader knows how to resolve the chore.
note:	Notes are always non-blocking and simply highlight something the reader should take note of.
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Nikhil Datta @handle.invalid · 11/11/2025
Where should Britain build 1.5 million homes? @amritakulka.bsky.social l and I analysed 20 billion housing searches + availability to map demand at a hyper-local level. Map 👉 wheretobuild.warwick.ac.uk Full + 350 LA reports 👉 www.warwick.ac.uk/cage/whereto... @cagewarwick.bsky.social 1/n
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Gemma Tetlow @gemmatetlow.bsky.social · 06/11/2025
A very interesting new report, coordinated by @centaxuk.bsky.social, is co-authored by nine think tanks from across the political spectrum and sets out 7 packages of tax reform that all agree would make the UK tax system "fairer, more effective and more pro-growth” centax.org.uk/tax-reforms-...
centax.org.uk
Tax Reforms for Growth | CenTax
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Hetan Shah @hetanshah.bsky.social · 30/10/2025
Government has published one of those quiet but important documents that might get overlooked as it is not 'newsy'. The headline finding is that £1 of public R&D investment generates £8 in net economic benefits for the UK over the long term www.gov.uk/government/p...
gov.uk
The value of public R&D
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Davide Viviano @vivianodavide.bsky.social · 29/10/2025
New Working Paper w/ Aristotelis Epanomeritakis Applications often use experiments with other evidence to estimate counterfactuals hard to identify with a single experiment. Examples include GE effects or external validity. Which experiments to run (and how) in these contexts?
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James O'Malley @jamesomalley.co.uk · 11/10/2025
Here is why the National Parking Platform is cool: takes.jamesomalley.co.uk/p/national-p...
takes.jamesomalley.co.uk
The National Parking Platform is a big, exciting deal and you should know about it
How the government nearly squandered an enormous opportunity
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Financial Times @financialtimes.com · 10/10/2025
What if this tale of graduate-specific woe is off-beam, based on a misguided analysis of the data? What if the accompanying narratives that seek to explain why the most educated are faring especially badly are focused on a mirage? on.ft.com/47igZ9B
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Florian Scheuer @florianscheuer.bsky.social · 10/10/2025
I am delighted to share that Nobel laureates Esther Duflo and Abhijit Banerjee will join our Department of Economics @econ.uzh.ch at the University of Zurich on July 1, 2026, as Lemann Foundation Professors of Economics. 🧵 1/7
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Hetan Shah @hetanshah.bsky.social · 12/09/2025
Pet parrots which typically live alone (whilst those in the wild live in large flocks) were given the technology to call each other. They would use it for up to three hours a day, and developed favourite friends 💔 on.ft.com/3K05vhS
When a parrot wanted to connect with a distant friend, a touchscreen showed a selection of other birds available online. The parrots learned to activate the screen, designed specially for them, by touching it gently with their tongues rather than pecking aggressively with their beaks.
"We had 26 birds involved," said Hirskyj-Douglas. "They would use the system up to three hours a day, with each call lasting up to five minutes." The interactions ranged from preening and playing with toys to loud vocal exchanges.
"When we went through the data, we found that most of these parrots had favourite friends," said Hirskyj-Douglas.
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Andrew Gelman et al. @statmodeling.bsky.social · 05/09/2025
Experimentation and thinking at the level of a program of experiments statmodeling.stat.columbia.edu/2025/09/05/e...
statmodeling.stat.columbia.edu
Experimentation and thinking at the level of a program of experiments | Statistical Modeling, Causal Inference, and Social Science
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Climent Quintana-Domeque @climent.bsky.social · 26/08/2025
1./ At last! 🎉 After years in the making, my paper with Manuel Fernandez & @marcogn.bsky.social is out as an IZA Discussion Paper. We ask: Can better streets boost property tax compliance? 🚧💰 If so, why? We answer this with an RCT in Mexico + a model of tax compliance. docs.iza.org/dp18082.pdf
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Paul Goldsmith-Pinkham @paulgp.com · 27/08/2025
(Z’X)^{-1}Z’Y
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The Guardian @theguardian.com · 17/08/2025
Waterstones opens 10 new stores a year as younger adults embrace reading
theguardian.com
Waterstones opens 10 new stores a year as younger adults embrace reading
Bookshop chain says people are keen to escape their screens and says rise in sales is partly down to BookTok Times may be tough on the high street but the bookseller Waterstones is enjoying strong sales as younger adults embrace reading as an escape from their screens and as online competition eases. “People have come back to reading and buying books in bookshops as we have made a place which is an enjoyable and effective way to buy books,” says James Daunt, the CEO of the British retailer, which has 320 UK bookshops and owns the Foyles, Hatchards and Blackwell’s names, and whose parent group also owns Barnes & Noble, the US’s largest bookstore chain. Continue reading...
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Stephen Bush @stephenkb.bsky.social · 11/08/2025
Stephanie 'Steve' Shirley has died aged 91. She is the subject of I think, one of the best ever FT lunches, which you can read here (registration or subscription required, will post a first 300 clicks free link in the replies):
ft.com
Tech pioneer Stephanie Shirley: ‘I need to make the life that was saved worth saving’
The ‘venture philanthropist’ on her journey from child refugee to billion-dollar businesswoman — and why Britain must do more for those fleeing war today
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Katie Mack @astrokatie.com · 10/08/2025
"PhD-level experts in your back pocket" is a completely nonsensical description of AI but a pretty good description of social media if you follow the right people
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Neil Renic @ncrenic.bsky.social · 21/07/2025
Important things to consider before we outsource the research and writing process to machine proxies
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Jeff Wasserstrom @jwassers.bsky.social · 30/06/2025
I've been hearing about & seen still photos of the recently rediscovered Chinese typewriter created by Lin Yutang, so cool to see this video report by @emilyzfeng.bsky.social featuring @tsmullaney.bsky.social (who, literally, wrote the book on the Chinese Typewriter) www.youtube.com/shorts/oaIlb...
youtube.com
This is the only prototype of the MingKwai typewriter
YouTube video by NPR
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Andrea Matranga @andreamatranga.bsky.social · 29/05/2025
The tragic landslide in Blatten gives me the excuse to tell you the story of how we found out Ice Ages existed. It's a cool story and the most important bit is rather similar to what's happening now.
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Daniel de Kadt @dandekadt.bsky.social · 14/05/2025
1. Goals that good descriptive *questions* pursue: 🟣 must seeks to describe theoretically relevant objects 🟣 may seek to reveal facts in need of explanation 🟣 may seek to evaluate a theory's face validity or completeness Good description is invariably deeply cognizant of theory.
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Justin Wolfers @justinwolfers.bsky.social · 29/04/2025
"I'm going to govern in econometrics" is a winning campaign slogan for the ages.
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John Self @john-self.bsky.social · 28/03/2025
Say hello to the Penguin Archive. 90 short books being published next month for Penguin’s 90th anniversary—fifteen of which are shown here. £5.99 each, with designs reminiscent of the old Great Ideas series. (Though sadly these aren’t debossed.)
Five books by Romain Gary, Rabindrath Tagore, Dylan Thomas, Gertrude Stein and Arthur Schnitzler, in stylish red-on-white text-based designs. Format is small (A-format) paperbacks. Five by Cesar Aira, Chester Himes, Gerard de Nerval, Audrey Lorde and Mary ShelleyFive by Maryse Condé, Nikolai Leskov, June Jordan, Willa Cather and Emilia Pardo
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Harriet Fitch Little @harrietfl.ft.com · 23/03/2025
For this weekend’s mag @claradoodle.bsky.social did something I have always dreamt of: she got restaurants to show us their booking data and how it’s effected by various forms of publicity. What matters more, TopJaw or an FT review? 😬 … with lovely interactive charts on.ft.com/4iE7PYj
on.ft.com
How restaurant hype happens: a tale told through booking data
[FREE TO READ] What mattered most for these five buzzy restaurants — critics, influencers or awards?
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Paul Goldsmith-Pinkham @paulgp.com · 19/03/2025
Interesting new paper: arxiv.org/pdf/2503.09907 improves on both rdrobust and rdhonest! Quite compelling... 1/n
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Chris Aitken @chrisaitken.bsky.social · 22/02/2025
Not sure if this is what you’re looking for, but it might be interesting: “Sir Jon Thompson told a rail industry conference the [£100m] bat protection structure in Buckinghamshire was needed to appease Natural England, as bats are legally protected in the UK.” www.bbc.co.uk/news/article...
bbc.co.uk
Bat safety barrier will cost £100m, says HS2 chairman - BBC News
Sir Jon Thompson tells a conference there is "no evidence high-speed trains interfere with bats".
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Chris Aitken @chrisaitken.bsky.social · 17/02/2025
It’s a tough problem. We learn and make progress, so the body of knowledge one needs to master to reach the frontier expands & morphs. That naturally reduces the value of reading original texts. But the original expression of an idea can be illuminating, even to simply see what was retained from it.
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Chris Aitken @chrisaitken.bsky.social · 17/02/2025
Not in a meaningful sense, no. Most of his core ideas have been distilled and refined through subsequent work. The version that graduate students now see is more formal and more precise. In general, economics places very little emphasis on original texts.
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Diane Coyle @dianecoyle1859.bsky.social · 08/02/2025
I’m getting really fed up of these abstract attacks on ‘regulation’ - why is Andy Haldane advocating the Doge approach for UK - blanket halving the number of regulators and their budgets? on.ft.com/416pqlx 1/2
on.ft.com
How to dismantle the UK’s regulatory Tower of Babel
Labour’s erratic, piecemeal approach will not deliver lasting change
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Ben Zaranko @benzaranko.bsky.social · 06/02/2025
NHS England productivity update The good: according to NHS estimates, hospital productivity is growing by 2.4% year-on-year The bad: productivity is still 8% below pre-pandemic levels The remarkable: spending on agency staff has fallen by 36% year-on-year www.england.nhs.uk/long-read/nh...
england.nhs.uk
NHS England » NHS productivity update
Agenda item: 5 (Public session) Report by: Julian Kelly, Chief Financial Officer / Deputy Chief Executive Officer Paper type: For information
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Chris Aitken @chrisaitken.bsky.social · 03/02/2025
The worst aspect of this problem is that Word totally refuses to change its dictionary when instructed to do so. It’s like it is taunting me. All I want to do is spell things correctly.
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Chris Aitken @chrisaitken.bsky.social · 03/02/2025
One of the most irritating and brutal manifestations of soft power has to be Microsoft’s insistence that all English language speakers use US English.
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Heather Stewart @guardianheather.bsky.social · 17/01/2025
New from me, on Rachel Reeves's influential chief economic adviser John Van Reenen, and some of the ideas behind Labour's approach to growth: www.theguardian.com/business/202...
theguardian.com
‘He’s one of the best’: the economist shaping Rachel Reeves’s growth plans
John Van Reenen believes he can help Labour solve the ‘peculiar British problem’ of chronically weak productivity
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Lucie Gadenne @lgadenne.bsky.social · 09/12/2024
Our IFS report on air pollution is out! Good news first: air pollution (PM2.5) has HALVED in England since 2003, with a big drop during Covid. There's no rebound post Covid, somewhat puzzlingly. We use DEFRA data, monitoring station data shows the same thing. (1/7) ifs.org.uk/publications...
ifs.org.uk
Exposure to air pollution in England, 2003–23 | Institute for Fiscal Studies
We set out how air pollution (PM2.5) has changed across England and explore inequalities by ethnicity, income deprivation, region and age.
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Jakob Schneebacher @jschneebacher.bsky.social · 05/12/2024
Want to do a funded, joint Oxford-CMA PhD on market power? Howard Smith (Oxford) and the CMA Microeconomics Unit are looking for promising candidates interested in doing research on the topic of "Beyond markups: understanding changes to competition, concentration, and market power". #EconSky 1/2
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Jeff Gortmaker @jeffgortmaker.com · 29/11/2024
Happy to share that my and @cconlon.bsky.social's micro BLP paper was just accepted at the Journal of Econometrics! jeffgortmaker.com/files/Incorp... It's our 2nd tied to our PyBLP software, so here's a thread on surprising (to me) benefits of combining methods research with open source work. 1/6
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Paul Brand @paulbrand.bsky.social · 29/11/2024
BREAKING: The Assisted Dying Bill passes second reading. YES - 330 NO - 275
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Julius Goedde @juliusgoedde.bsky.social · 23/11/2024
1/🧵 Popularity of token money is ⬆️ to allocate class seats, food donations, holiday homes, … My #JMP asks 1️⃣Does price-setting with tokens work as in normal markets? 2️⃣Can token money have advantages even when using real money is possible? Surprising answers: NO, YES! #EconJobMarket #EconSky
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Simon Willison @simonwillison.net · 20/11/2024
Foursquare just open sourced their 100 million place point of interest dataset! Some notes on poking around with it using DuckDB (it's Parquet files on S3) simonwillison.net/2024/Nov/20/...
simonwillison.net
Foursquare Open Source Places: A new foundational dataset for the geospatial community
I did not expect this! > [...] we are announcing today the general availability of a foundational open data set, Foursquare Open Source Places ("FSQ OS Places"). This base layer …
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Hetan Shah @hetanshah.bsky.social · 18/11/2024
Shocking news. 36% of UK children are living in poverty according to the latest Social Metrics Commission research (I am one of the Commissioners) www.theguardian.com/society/2024...
Graph showing poverty levels including child poverty reaching 36%
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Chris Aitken @chrisaitken.bsky.social · 17/11/2024
Post a picture you took (no description) to bring some zen to the timeline
A stream meanders through the foreground, eventually leading the eye up to a mountain in the background. The stream is a vivid turquoise and is completely clear. The banks of the river are lined with trees, which are a deep green. The mountain’s peak is obscured by a light cloud, which sits in front of a beautiful, deep blue sky.
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eileen chengyin chow @chowleen.bsky.social · 16/11/2024
Me vs. November 2024
woodblock print, woman being swallowed by giant carp kite
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Best of Econtwitter newsletter @bestofecontwitter.bsky.social · 16/11/2024
Best of #econtwitter & #econsky - Week of October 27, 2024: paper summaries www.bestofecontwitter.com/p/best-of-ec...
bestofecontwitter.com
Best of #econtwitter - Week of October 27, 2024: paper summaries
Welcome readers old and new to this week’s edition of the Best of Econtwitter newsletter.
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alex hayes @alexpghayes.com · 15/11/2024
~~ new blog post ~~ i wrote about the meme that academic code is bad, what i think is achievable, and why i don't think we should be trying to get academics to write software for production would love to hear what folks think! #rstats #pydata www.alexpghayes.com/post/what-i-...
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Khoa @khoavuumn.bsky.social · 12/11/2024
Would love to more econ research in this space. Happy to boost anyone's research if they tag me in their post.
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Jeremy Allen @jeremy-data.bsky.social · 11/11/2024
Boss: I need #datavis of global commerce from 1500BC to present, preferably hand colored and engraved Me: ummmm??? William Playfair: hold my beer www.davidrumsey.com/luna/servlet... #databs #rstats
davidrumsey.com
Chart of universal commercial history, from the year 1500 before the Christian Era to the present year 1805 ...
William Playfair's An inquiry into the permanent causes of the decline and fall of powerful and wealthy nations ... , published in London by Greenland and Norris, 1805. First edition; second edition p...
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