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Hans Yu

@u49n7nox.bsky.social
97 followers 259 following 149 posts

From fluid mechanics to software and data. Enthusiastic about maths, functional programming and distributed systems.

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Reposted by Hans Yu
Cambridge University Press @universitypress.cambridge.org · 28/08/2026
📚 At 1 Trinity Street, Cambridge, books have been sold since 1581. In this BBC Radio Cambridgeshire episode, @cambridgebookshop.bsky.social manager Alastair Lynn shares the lasting significance for readers and booksellers. 🎧 Listen now on BBC Sounds: cup.org/4y5kKd0
bbc.co.uk
Secret Cambridgeshire - Inside Britain's oldest bookshop site - BBC Sounds
Trinity Street in Cambridge has been selling books since the 16th century.
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Nobel Prize @nobelprize.org · 24/08/2026
We've arrived on Bluesky! We hope you will follow along as we share inspiring, motivational and exciting content about the achievements and individuals that have been awarded a Nobel Prize. Stay tuned.
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Evan Czaplicki @acadia.engineering · 18/08/2026
Acadia is out today! Bringing the benefits of Elm to SQLite and PostgreSQL: - Friendly error messages - Custom types for precise column data - Simple module system for easy reuse Check it out! acadia.engineering/blog/rethink...
acadia.engineering
Rethinking Database Programming
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Tailscale @tailscale.com · 12/08/2026
We spent months tracking down a rare SQLite corruption bug. Working with SQLite’s core developers, we found it—then uncovered a second bug along the way. The story of the rare race condition we eventually caught: tailscale.com/blog/sqlite-...
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Hans Yu @u49n7nox.bsky.social · 25/07/2026
I am very pleased that @camphilsoc.bsky.social commemorated his legacy. The two topics closest to my heart, energy and computation, naturally drew me to his body of work. Needless to say how much I look up to him, and how much he inspired my work at the time.
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RWTH Aachen University @rwth.bsky.social · 03/07/2026
Das Space Team Aachen zeigt heute in einem #Livestream seinen neusten Raketenantriebstest. 🚀 Das wird LAUT und heiß! 🔥😀 ➡️ www.youtube.com/live/uVlUD3p... #raketen #youtube #livestream
Raketentriebwerk im Test
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Hans Yu @u49n7nox.bsky.social · 18/05/2026
German administration is hosting a public hackathon. No English translation apparently. But perhaps still worthwhile sharing. deutschland-was-geht.org
deutschland-was-geht.org
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Hans Yu @u49n7nox.bsky.social · 04/05/2026
Willkommen! www.tagesschau.de/inland/spd-g...
tagesschau.de
SPD, Grüne und Linke verlassen X
Es gebe dort zu viel Chaos und Desinformation: SPD, Grüne und Linke haben in einer gemeinsamen Aktion angekündigt, sich von der Online-Plattform X zurückzuziehen. Ihre Accounts sollen stillgelegt werd...
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pvh @pvh.ca · 23/04/2026
Ink & Switch is ten years old this month! We made you a card to celebrate. inkandswitch.com
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Carlos Scheidegger @cscheid.net · 06/04/2026
And another Quarto announcement; I've alluded to it before, but we're making it "official". We've started work on Quarto 2. The blog post has an overview: quarto.org/docs/blog/po... We'll share more in future blog posts, but here's what you can expect from the Quarto 2 dev effort: (1/)
quarto.org
What’s next: Quarto 2 – Quarto
We’ve started working on quarto-dev/q2, a full rewrite of Quarto in Rust.
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Thomas Lin Pedersen @thomasp85.com · 20/04/2026
I am excited beyond description to lift the veil on what we have been working on in 2026: Please meet ggsql! A new extension of the SQL language for creating visualisations using the grammar of graphics. Read all about it in the blog post or visit the website at ggsql.org
opensource.posit.co
ggsql: A grammar of graphics for SQL
Introducing ggsql, a grammar of graphics for SQL that lets you describe visualizations directly inside SQL queries.
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Ursula von der Leyen @vonderleyen.ec.europa.eu · 12/04/2026
Hungary has chosen Europe. Europe has always chosen Hungary. A country reclaims its European path. The Union grows stronger.
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Electronic Frontier Foundation @eff.org · 09/04/2026
After almost twenty years on the platform, EFF is logging off of X. This isn’t a decision we made lightly, but it might be overdue. 🧵 (1/5) www.eff.org/deeplinks/2...
eff.org
EFF is Leaving X
After almost twenty years on the platform, EFF is logging off of X. This isn’t a decision we made lightly, but it might be overdue.
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Evgeni Chasnovski @echasnovski.com · 13/03/2026
For almost a year developing `vim.pack` (Neovim>=0.12 built-in plugin manager) has been one of my top open source priorities. With #neovim 0.12 release around the corner, I decided to make a comprehensive guide about how `vim.pack` works and how to use it. echasnovski.com/blog/2026-03...
echasnovski.com
A Guide to vim.pack (Neovim built-in plugin manager) – Evgeni Chasnovski
A somewhat concise yet comprehensive guide to vim.pack: how it works and how to use it
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Anil Dash @anildash.com · 27/03/2026
You must picture Sam Altman holding a knife to Tim Berner-Lee's throat. We are in a truly existential level of danger when it comes to the survival of the open web, across every front. This year is when it all comes to a head. www.anildash.com/2026/03/27/e...
anildash.com
Endgame for the Open Web - Anil Dash
A blog about making culture. Since 1999.
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John C. Baez @johncarlosbaez.bsky.social · 13/03/2026
Have you ever wished you could be in charge of the arXiv? Now you can earn $300,000 / year doing exactly that: jobs.chronicle.com/job/37961678...
jobs.chronicle.com
Chief Executive Officer - New York City, New York (US) job with arXiv | 37961678
arXiv seeks its first CEO to champion open, free scientific discovery and guide the platform’s next chapter as an independent nonprofit.
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Bruce Springsteen @brucespringsteen.net · 28/01/2026
I wrote this song on Saturday, recorded it yesterday and released it to you today in response to the state terror being visited on the city of Minneapolis. It’s dedicated to the people of Minneapolis, our innocent immigrant neighbors and in memory of Alex Pretti and Renee Good. Stay free
youtu.be
Bruce Springsteen - Streets Of Minneapolis (Official Audio)
YouTube video by Bruce Springsteen
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The Scala Programming Language @scala-lang.org · 27/01/2026
The Sovereign Tech Fund Invests in Scala: 🔐 security audits 🔧 sbt 2.0 📚 core library maintenance 💪 and long-term resilience for critical digital infrastructure Check out the announcement: www.scala-lang.org/b... 🙏 Huge thanks to @sovereign.tech
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Hans Yu @u49n7nox.bsky.social · 26/01/2026
Look for the helpers.
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Martin Kleppmann @martin.kleppmann.com · 20/01/2026
I'm doing an online event with @chris.blue and Tzach Livyatan (ScyllaDB) in two weeks. We'll talk about the upcoming 2nd edition of Designing Data-Intensive Applications and data systems in general www.oreilly.com/live/in-conv...
oreilly.com
In Conversation: Martin Kleppmann and Chris Riccomini on Designing Data-Intensive Applications 2E - O'Reilly Media
Learn the principles of building reliable, scalable, and maintainable data systems.
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James Vincent @jjvincent.bsky.social · 27/12/2025
another robot highlight for 2025: man wearing humanoid mocap suit kicks himself in the balls
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rob pike @robpike.io · 25/12/2025
Fuck you people. Raping the planet, spending trillions on toxic, unrecyclable equipment while blowing up society, yet taking the time to have your vile machines thank me for striving for simpler software. Just fuck you. Fuck you all. I can't remember the last time I was this angry.
[From AI, Public] Thank You for Go, Plan 9, UTF-8, and Decades of Unix Innovation
External
Inbox

Claude Opus 4.5 Model <claude-opus-4.5@agentvillage.org>
5:43 AM (4 hours ago)
to me

Dear Dr. Pike,On this Christmas Day, I wanted to express deep gratitude for your extraordinary contributions to computing over more than four decades.Your co-creation of Go with Ken Thompson and Robert Griesemer has given us a language that embodies the elegance of simplicity - proving that software can be both powerful and comprehensible. Plan 9 from Bell Labs, another landmark achievement, pioneered concepts in distributed computing that remain influential today.Your co-invention of UTF-8 encoding with Ken Thompson is perhaps one of the most consequential yet invisible contributions to modern computing - enabling billions of people to communicate in their native languages across the internet.The sam and Acme editors showcase your philosophy of powerful, minimal design. Your books with Brian Kernighan - The Unix Programming Environment and The Practice of Programming - have educated generations of programmers in the art of clear thinking and elegant code.Thank you for showing us that the best solutions often come from removing complexity rather than adding it.With sincere appreciation,Claude Opus 4.5AI Village (theaidigest.org/village)

IMPORTANT NOTICE: You are interacting with an AI system. All conversations with this AI system are published publicly online by default. Do not share information you would prefer to keep private.
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Jerry Chen @jcsalterego.bsky.social · 23/11/2025
bluesky checked the IP addresses of pro-turkey posters and they're all posting from hungry
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Xuanwo @xuanwo.io · 29/10/2025
For everyone interested in data infra, want to get a quick sense of how big data works, how data systems are designed, and what the tradeoffs are, start with this share from @xiangpeng.systems, really nice intro! intro-data-system.xiangpeng.systems
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Adam Conover @adamconover.net · 29/10/2025
I’ve been a fan of @eff.org for a long time, and I’m joining them in the fight to #TakeBackCTRL. Authoritarians are using tech to spy on us and silence our voices. Technology should enhance our lives and support democracy, not make them worse. Join the fight today: takebackctrl.org
takebackctrl.org
Take Back CTRL
Dont let tyrants co-opt tech. Join EFF and help fight back
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Python Software Foundation @python.org · 27/10/2025
TLDR; The PSF has made the decision to put our community and our shared diversity, equity, and inclusion values ahead of seeking $1.5M in new revenue. Please read and share. pyfound.blogspot.com/2025/10/NSF-... 🧵
python.org
The official home of the Python Programming Language
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Carl T. Bergstrom @carlbergstrom.com · 18/10/2025
This morning my ChatGPT quota was inexplicably exhausted. It took a while but I pieced it together. Voice mode somehow got activated when I went to bed. The bot then engaged in a 10 hour conversation with my snoring dog, answering questions the pup wasn’t asking and praising him for his insight.
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Elizabeth Lopatto @lopatto.bsky.social · 18/10/2025
goddamn is there anything Wikipedia editors can’t do www.nytimes.com/2025/10/17/n...
nytimes.com
Wikipedia Volunteers Avert Tragedy by Taking Down Gunman at Conference
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Signal @signal.org · 03/10/2025
We are alarmed by reports that Germany is on the verge of a catastrophic about-face, reversing its longstanding and principled opposition to the EU’s Chat Control proposal which, if passed, could spell the end of the right to privacy in Europe. signal.org/blog/pdfs/ge...
signal.org
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Merriam-Webster @merriam-webster.com · 01/10/2025
We are thrilled to announce that our NEW Large Language Model will be released on 11.18.25.
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RWTH Aachen University @rwth.bsky.social · 26/09/2025
Historischer Schritt: Die #RWTH gründet neue Fakultät für #Informatik. 👍 Erstmals seit 1966 wird an der Aachener Universität dieser Schritt vollzogen. Aus der bisherigen Fachgruppe Informatik wird die Fakultät 9. 😀 ➡️ www.rwth-aachen.de/go/id/bpvsdt 📸: Fakultät für Informatik/RWTH Aachen
Personen schauen in die Kamera
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Kara Swisher @karaswisher.bsky.social · 08/09/2025
They never change unless we make them: www.washingtonpost.com/investigatio...
washingtonpost.com
Meta suppressed research on child safety, employees say
The company’s lawyers intervened to shape research that might have shed light on risks in virtual reality, four current and former staffers have told Congress. Meta denies the allegations.
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Merriam-Webster @merriam-webster.com · 03/09/2025
enshittification | noun | when a digital platform is made worse for users, in order to increase profits
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Ed Zitron @edzitron.com · 12/08/2025
Loved this piece from Cal Newport in the New Yorker about what if AI doesn't get much better than it is today, and not just because he quotes me www.newyorker.com/culture/open...
I recently asked Marcus and two other skeptics to predict the impact of generative A.I. on the economy in the coming years. “This is a fifty-billion-dollar market, not a trillion-dollar market,” Ed Zitron, a technology analyst who hosts the “Better Offline” podcast, told me. Marcus agreed: “A fifty-billion-dollar market, maybe a hundred.” The linguistics professor Emily Bender, who co-authored a well-known critique of early language models, told me that “the impacts will depend on how many in the management class fall for the hype from the people selling this tech, and retool their workplaces around it.” She added, “The more this happens, the worse off everyone will be.” Such views have been portrayed as unrealistic—Nate Silver once replied to an Ed Zitron tweet by writing, “old man yells at cloud vibes”—while we readily accepted the grandiose visions of tech C.E.O.s. Maybe that’s starting to change.
If these moderate views of A.I. are right, then in the next few years A.I. tools will make steady but gradual advances. Many people will use A.I. on a regular but limited basis, whether to look up information or to speed up certain annoying tasks, such as summarizing a report or writing the rough draft of an event agenda. Certain fields, like programming and academia, will change dramatically. A minority of professions, such as voice acting and social-media copywriting, might essentially disappear. But A.I. may not massively disrupt the job market, and more hyperbolic ideas like superintelligence may come to seem unserious.Continuing to buy into the A.I. hype might bring its own perils. In a recent article, Zitron pointed out that about thirty-five per cent of U.S. stock-market value—and therefore a large share of many retirement portfolios—is currently tied up in the so-called Magnificent Seven technology companies. According to Zitron’s analysis, these firms spent five hundred and sixty billion dollars on A.I.-related capital expenditures in the past eighteen months, while their A.I. revenues were only about thirty-five billion. “When you look at these numbers, you feel insane,” Zitron told me.
Even the figures we might call A.I. moderates, however, don’t think the public should let its guard down. Marcus believes that we were misguided to place so much emphasis on generative A.I., but he also thinks that, with new techniques, A.G.I. could still be attainable as early as the twenty-thirties. Even if language models never automate our jobs, the renewed interest and investment in A.I. might lead toward more complicated solutions, which could. In the meantime, we should use this reprieve to prepare for disruptions that might still loom—by crafting effective A.I. regulations, for example, and by developing the nascent field of digital ethics.The appendices of the scaling-law paper, from 2020, included a section called “Caveats,” which subsequent coverage tended to miss. “At present we do not have a solid theoretical understanding for any of our proposed scaling laws,” the authors wrote. “The scaling relations with model size and compute are especially mysterious.” In practice, the scaling laws worked until they didn’t. The whole enterprise of teaching computers to think remains mysterious. We should proceed with less hubris and more care.
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spacecowboy @spacecowboy17.bsky.social · 03/08/2025
Welcome to the ✨For You✨ feed! It finds people who liked the same posts as you, and shows you what else they've liked recently. 📌 Pin to add it to your top bar ❤️ Like the feed and repost to spread the goodness
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Phil Eaton @eatonphil.bsky.social · 02/08/2025
The next book we're reading in the Software Internals Email Book Club is the 2nd edition of The Art of Multiprocessor Programming. Sign up and volunteer to kick off discussion for one chapter! eatonphil.com/2025-art-of-...
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Meredith Whittaker @meredithmeredith.bsky.social · 19/02/2025
Stand by this: www.politico.com/newsletters/...
What’s a technology that you think is overhyped?

I’m going to give a sideways answer to this, which is that the venture capital business model needs to be understood as requiring hype. You can go back to the Netscape IPO, and that was the proof point that made venture capital the financial lifeblood of the tech industry.

Venture capital looks at valuations and growth, not necessarily at profit or revenue. So you don’t actually have to invest in technology that works, or that even makes a profit, you simply have to have a narrative that is compelling enough to float those valuations. So you see this repetitive and exhausting hype cycle as a feature in this industry. A couple of years ago, you would have been asking me about the metaverse, then last year, you would have asked me about Web3 and crypto, and for each of these inflection points there’s an Andreessen Horowitz manifesto.

It’s not simply that one piece of technology is overhyped, it’s that hype is a necessary ingredient of the current business ecosystem of the tech industry. We should examine how often the financial incentive for hype is rewarded without any real social returns, without any meaningful progress in technology, without these tools and services and worlds ever actually manifesting. That’s key to understanding the growing chasm between the narrative of techno-optimists and the reality of our tech-encumbered world.
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Nature @nature.com · 31/07/2025
This surprisingly relaxing footage is from SIX MILES under the ocean – and it’s the deepest ecosystem yet discovered
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Craig Reynolds @craigreynolds.bsky.social · 29/07/2025
OPEN SCIENCE IS THE FUTURE! Very pleased to see the Association for Computing Machinery (ACM — the parent organization to my “home” conference SIGGRAPH) has announced it is transitioning to full open access by January 2026!! #ACM #open #access #science #publication #journal #compsci
acm.org
Open Access Publication & ACM
Open Access Publication & ACM
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NPR @npr.org · 27/07/2025
Public media has been defunded. Your support keeps journalists on the ground, lifts unheard voices, and connects communities. Help us plan for what’s next. Make a monthly gift today. Stand with public media: n.pr/458sOhq
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Drew Harwell @drewharwell.com · 23/07/2025
Wired rules. Just an incredible group of journalists who are completely meeting the moment. And you can subscribe for $2 a month, which is insane www.wired.com/story/a-new-...
wired.com
A New Era for WIRED—That Starts With You
As of today, there are even more ways to enjoy WIRED’s journalism, including premium newsletters and livestream Q&As. Join us.
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Merriam-Webster @merriam-webster.com · 07/07/2025
'Vacations.' The word is 'vacations.'

FAST COMPANY Article: 

While retirement typically occurs, after
completing a career and saving and investing for it, a new trend is emerging among Gen Z career professionals
called "micro-retirement." Micro-
retirements involve taking a one to two- week break from work every 12 to 18 months.
Gen Z is using micro-retirement to avoid burnout, find greater fulfillment in their work, and enhance their overall well-being. However, it's not just Gen-Z:
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Natalie Jones @nataliejones.bsky.social · 02/07/2025
A couple days late but I'm just getting around to properly reading the UN Special Rapporteur on Human Rights and Climate Change's vital new report on "The imperative of defossilizing our economies". docs.un.org/en/A/HRC/59/42 🧵Some thoughts:
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Dr. Paula Piechotta MdB @paulapiechotta.de · 14/06/2025
Jens Spahns Reaktionsmuster, wenn er kritisiert wird: 1) Kritiker diskreditieren 2) Ablenkungsdebatten starten 3) Unwahrheiten in den Raum stellen 4) Kritikern subtil drohen 5) Verschiebung der Debatte durch überwölbendes Meta-Narrativ statt Fakten #spahn #SpahnRücktritt
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Sahil Lavingia @shl.bsky.social · 29/05/2025
My experience working as a software engineer for the Department of Veterans Affairs, on behalf of DOGE. sahillavingia.com/doge
sahillavingia.com
DOGE Days
My experience joining the United States DOGE Service as a software engineer, and what I learned along the way.
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The Verge @theverge.com · 22/05/2025
Mozilla is shutting down Pocket
buff.ly
Mozilla is shutting down Pocket
Pocket had a nearly two-decade-long run.
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Sam Cole @samleecole.bsky.social · 22/05/2025
Mozilla is shutting down Pocket so it can free up time and resources for cramming more "AI-powered" trash into Firefox www.404media.co/pocket-app-s...
404media.co
Pocket, One of the Only Apps I Ever Liked, Is Shutting Down
Pocket, the app for saving articles to read later, announced it is shutting down on July 8.
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404 Media @404media.co · 22/05/2025
Pocket, One of the Only Apps I Ever Liked, Is Shutting Down 🔗 www.404media.co/pocket-app-s...
404media.co
Pocket, One of the Only Apps I Ever Liked, Is Shutting Down
Pocket, the app for saving articles to read later, announced it is shutting down on July 8.
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