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Good sleep, good learning, good life (2012)
The good educator insists on exercise, play, and plentiful sleep: "the great cordial of nature."
New
The latest blog posts to take off on Hacker News. 1,197 posts.
Life, Learning & Writing
Any year
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The Zettelkasten method in Obsidian
Learn how to set up a working Zettelkasten in Obsidian: note types, vault structure, MOCs, and how AI handles the maintenance that kills most systems.
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The Cognitive Dark Forest
The open web with AIs is turning into a dark forest.
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Hypothesis, Antithesis, synthesis
Introducing Hegel, our new family of property-based testing libraries.
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Hazardous substances found in all headphones tested by ToxFREE project
PRAGUE, 18 February 2026 – A landmark international study across five Central European countries has found hazardous chemicals in every single pair of headphones analysed, from premium models to cheap imports. Authors say the results reveal a systemic failure in consumer safety regulation acros...
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On a Boat
Media over QUIC: I'm on a boat.
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Enhancing gut-brain communication reversed cognitive decline in aging mice
Aging causes changes in gut bacteria in mice, which hampers communication between the intestines and the brain. Restoring this connection helped old mice form memories as well as young animals.
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Universal vaccine against respiratory infections and allergens
Stanford Medicine researchers and their colleagues invented a new vaccine that protects mice from respiratory viruses, bacteria and allergens — the closest yet to a universal vaccine.
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Dulce et Decorum Est (1921)
Bent double, like old beggars under sacks, Knock-kneed, coughing like hags, we cursed through sludge, Till on the haunting flares we turned our backs, And…
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Thinking hard burns almost no calories but destroys your next workout
Your brain uses 20% of your body's energy just idling. Intense thinking barely adds to that. But the mental byproducts of a long cognitive day quietly sabotage your endurance in ways no amount of willpower can fix.
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NetNewsWire Turns 23
NetNewsWire 1.0 for Mac shipped 23 years ago today! 🎸🎩🕶️ Here’s where things are on this particular February 11: we just shipped 7.0 for Mac and iOS, and now we’re working on NetNewsWire 7.0.1. After a big release, no matter how careful we are, there are often some regressions to fix and tweaks to make right away, so…
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Claude is a space to think
Claude will remain ad-free. We explain why advertising incentives are incompatible with a helpful AI assistant.
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Vitamin D supplements cut heart attack risk by 52%. Why?
A new randomized control trial tested personalized vitamin D supplementation based on blood test results.
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Two days of oatmeal reduce cholesterol level
The fact that oats have a beneficial effect on the metabolism is nothing new. German medic Carl von Noorden treated patients with diabetes with the cereal at the beginning of the 20th century – with remarkable success. “Today, effective medications are available to treat patients with diabetes,” explains…
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Typography on Pencils (2023)
It wouldn't be Pencil Day without a round up of our pencil typography photos. Check out our current stock of new & vintage pencils here. Please do credit us if you use these images anywhere. Thank you.
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Code and Let Live
How we learned to stop worrying and love writeable root filesystems.
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C Is Best (2025)
Since its inception on 2000-05-29, SQLite has been implemented in generic C. C was and continues to be the best language for implementing a software library like SQLite. There are no plans to recode SQLite in any other programming language at this time.
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Take One Small Step
Think smaller–then act.
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Standard Ebooks: Public Domain Day 2026 in Literature
Read about the new ebooks Standard Ebooks is releasing for Public Domain Day 2026!
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Project ideas to appreciate the art of programming
Curated list of project ideas for programmers who aren't sure what to build. We chose 73 projects that teach a lot and are fun to build.
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Steve wants us to make the Macintosh boot faster
We always thought of the Macintosh as a fast computer, since its 68000 microprocessor was effectively 10 times faster than an Apple II, but our Achilles heel was the floppy disk. We had limited RAM, so it was often necessary to load data from the floppy, but there we were no faster than an Apple II. Once we had real…
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A new Little Prince museum has opened its doors in Switzerland
The Besenval Palace in Solothurn opened the museum « Der Kleine Prinz und seine Welt » dedicated to the Little Prince through the collection of Jean-Marc Probst.
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The programmers who live in Flatland
In the book Flatland: A Romance of Many Dimensions, a two-dimensional world called “Flatland” is inhabited by polygonal creatures like triangles, squares, and circles. The protaganist, a square, is…
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ADHD and monotropism (2023)
Monotropism was formulated as a theory of autism, but as time has gone on it has become clear that many diagnosed with Attention Deficit Hyperactivity Disorder (ADHD) identify strongly with many aspects of the theory.
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Ioannis Yannas, who invented artificial skin for treatment of burns, has died
Professor Ioannis V. Yannas, a physical chemist and engineer known for the invention of artificial skin for the treatment of severe burns and an MIT faculty member for nearly 60 years, died at age 90.
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Learning from failure to tackle hard problems
This blog post is based on the work BaNEL: Exploration Posteriors for Generative Modeling Using Only Negative Rewards. Tackling Very Hard Problems The ultimate aim of machine learning research is to push machines beyond human limits in critical applications, including the next generation of th
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How to build a 747 – A WorldFlight Story
How far would you go for realism? The world of flight simulation has come a long way over the past […]
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