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18 September
Writes The Pragmatic Engineer, the software-engineering newsletter, and wrote The Software Engineer's Guidebook. Formerly an engineering manager at Uber, and at Microsoft/Skype and Skyscanner before that.
9 September
Developer, author and YouTuber covering Raspberry Pi, homelab hardware and Ansible automation. Author of Ansible for DevOps.
Latest little 3D printing life hack: print drafts of new models in white PLA. Easy to scribe, mark up with a pencil, see dimensions in any lighting, etc. So much easier sticking pencil marks on the model than making notes on a sticky. Related
8 September
American software engineer; worked on code-server at Coder and teaches TypeScript and open-source contribution. Publishes at joeprevite.com.
the best way formula for starting a new morning routine is alarm clock + accountability buddy tell your friend what time you want to wake up - 5:45am then for a week straight, text them "i'm up" each morning after a week you'll find yourself waking up without the alarm Related
5 September
Mathematical physicist at UC Riverside. Wrote This Week's Finds in Mathematical Physics and now the Azimuth blog on mathematics, physics and environmental science.
Here's some crazy geometry in 4, 5 and 6 dimensions: The 4-demicube has 8 vertices. It lives in 4 dimensions. You get it from a 4-dimensional cube - which has 16 vertices - by keeping every other vertex, throwing away half. That leaves 8. What are its top-dimensional faces, aka 'facets'? Surprise: there's only one kind! All of them are regular tetrahedra. In higher dimensions the demicube has two kinds of facet - one from the cube's corners, one from the cube's facets. But in 4 dimensions the two kinds happen to be the same shape: the tetrahedron! That's why the 4-demicube is especially symme… Related
3 September
Political scientist and Baptist pastor; writes Graphs about Religion, charting American religious life from survey data.
2 September
Web standards author and speaker; wrote the CSS: The Definitive Guide series and co-founded the An Event Apart conference.
I’m trying to reattach interior pieces of a decades-old violin case. The pieces were originally affixed by staples that have a 4.5mm crown, 10mm leg length, and are made from wire that’s 0.75mm thick. I have searched a bunch permutations of those dimensions (metric and imperial-converted) with various terms (“narrow crown”, “upholstery”, “trim”, etc.) and am still coming up empty for what these staples are and where I could get new ones, and what kind of device I would need. Anyone here know? Related
Writer on the intersection of technology and finance. Author of the Bits about Money newsletter and host of the Complex Systems podcast; previously at Stripe.
Non-ironically this sort of factor is an underappreciated vector for policing reform, because cross-departmental onmbudsmen willing to intervene against a sworn officer without someone dying are very rare in the U.S. legal/political system. Quoting @willchamberlain On the latest Counterweight, Rahul Sidhu (@rahul), Flock’s chief strategy officer, explains that police database abuse is not a new problem. Bad cops have been running plates for friends for decades. What's new is that Flock created auditing software that is catching them. America Related
1 September
Writer and author of All the Wrong Moves; his newsletter covers meditation, relationships and creativity, and he co-runs a perfume line.
24 August
Latvian full-stack WordPress developer and course creator at WPElevator; blogs since 2007 about the open web, electronics, home automation and sustainable living.
During the weekend I built a contextual search tool for a photo library with 42k images across 2.8k galleries. The results are amazing! Turns out the AI models that generate embedding vectors from images directly are BAD at capturing the image contents, so I had to first generate captions and then generate the embeddings for the captions instead. Total cost: $30 for both captions (gpt-5-mini) and embeddings (text-embedding-3-large with 3072 dimensions). OpenAI Related
23 August
Australian moral philosopher, Professor of Bioethics emeritus at Princeton University; author of Animal Liberation, Practical Ethics and The Life You Can Save.
Short the hidden dimensions of consciousness with MICHAEL POLLAN Related
20 August
Australian moral philosopher, Professor of Bioethics emeritus at Princeton University; author of Animal Liberation, Practical Ethics and The Life You Can Save.
the hidden dimensions of consciousness with MICHAEL POLLAN Related
17 August
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
16 August
Economics writer; author of the Noahpinion newsletter.
Programmer and teacher; writes on software, learning and the web, and makes the Coding Blocks video course.
Their words
String theory for the masses. This is how popular science books should be like: interesting, enchanting, inviting.
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rakhim.org
13 August
Programmer; wrote Extreme Programming Explained and Test-Driven Development, signed the Agile Manifesto, and writes Tidy First?.
30 July
Economics professor at the University of California, Berkeley and a former Deputy Assistant Secretary of the US Treasury. Author of Slouching Towards Utopia and writer of the Grasping Reality newsletter.
Their words
And, in addition, Nate Silver’s earlier book The Signal and the Noise was, I thought, brilliant. I am forever deeply in his debt for his making me better-informed and wiser across a whole bunch of different dimensions.
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braddelong.substack.com
12 July
General partner at Andreessen Horowitz from 2013 to 2018 and CTO of Coinbase from 2018 to 2019; co-founder of Counsyl and Earn.com. Wrote The Network State (2022), free in full at thenetworkstate.com, and founded the Network School.
28 June
Economist at Brown; writes ParentData and the books Expecting Better and Cribsheet, reading the evidence behind pregnancy and parenting advice.
15 June
Economist at Brown; writes ParentData and the books Expecting Better and Cribsheet, reading the evidence behind pregnancy and parenting advice.
23 March
Independent game developer, creator of the colony simulation RimWorld and author of Designing Games: A Guide to Engineering Experiences. Previously worked on BioShock Infinite.
It's underappreciated how little freedom you have while designing a game. You can't just make what you want. You have to to make what works, and you don't get to choose that. Related
4 March
Swedish essayist who writes Escaping Flatland, a newsletter of essays on relationships, thinking, writing and homeschooling.
An underappreciated thing about Substack is that it has slow virality. That social media thing where you have to churn out content because it is forgotten after three days is much less the case here. If you want to, you can put in serious effort into making a properly good piece, and it will keep getting read for years. This is a very good thing for both readers and writers, and I wish more people leaned into making few but exceptional pieces: doing things well is a viable strategy here in a way that it wasn’t on older platforms. Related
13 January
Robert Gray Dodge Professor of Network Science at Northeastern University; discovered scale-free networks and, with Reka Albert, proposed the Barabasi-Albert model.
Our Nature paper just received 0/10 on Sabine Hossenfelder’s @skdh BS meter.” Yay! "After 40 years, string theory may have finally found its destiny: fruit fly neurons... Fruit flies in 10 dimensions. Go for it." 🎥 https://t.co/d5MKC8HfhS 📄 barabasi.com
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6 January
Indian software engineer and co-founder of Skcript; builds web apps and writes at varunraj.in.
14 December 2025
Writer living in Brooklyn and former Man Repeller features director; writes the weekly newsletter Maybe Baby on culture and consumption.
Their words
I sincerely find these blocks to be perfect and transcendent to play with—it's about the dimensions, they all fit together perfectly like you've just beautifully solved a complex math problem.
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haleynahman.substack.com
10 October 2025
Emeritus professor of war studies at King's College London; wrote Strategy: A History and Command, and writes about the wars in Ukraine and Gaza as they happen.
Their words
As a formula ‘as long as it takes’ lacks urgency. It is an option for the allies precisely because they are not doing the fighting.
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samf.substack.com
1 September 2025
Machine learning engineer working on recommender systems, personalization and information retrieval. Previously worked on LLMs and LLM infrastructure at Mozilla.ai and on ML and recsys at Duo, Tumblr, Automattic and Comcast; wrote the 'What are embeddings?' text and ran the Normconf conference.
How big are our embeddings now and why? A few years ago, I wrote a paper on embeddings. At the time, I wrote that 200-300 dimension embeddings were fairly common in industry, and that adding more dimensions during training would create diminishing returns for…
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25 June 2025
Member of technical staff at Anthropic. He has led ML/AI teams at Amazon, Alibaba and Lazada, and writes about LLMs, recommender systems and engineering at eugeneyan.com.
Wrote an intro to evals for long-context Q&A systems: • How it differs from basic Q&A • What dimensions & metrics to eval on • How to build llm-evaluators • How to build eval datasets • Benchmarks: narratives, technical docs, multi-docs eugeneyan.com
LLMs benchmarks Related
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