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The Waymo World Model: A New Frontier for Autonomous Driving Simulation

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
306•xnx•2h ago•164 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
191•aktau•4h ago•95 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
130•ostacke•3h ago•32 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
120•surprisetalk•3d ago•14 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
29•limoce•3d ago•5 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
748•cdrnsf•7h ago•339 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
219•todsacerdoti•5h ago•128 comments

The Monad Called Free

http://blog.sigfpe.com/2014/04/the-monad-called-free.html
36•romes•3d ago•10 comments

Invention of DNA "Page Numbers" Opens Up Possibilities for the Bioeconomy

https://www.caltech.edu/about/news/invention-dna-page-numbers-synthesis-kaihang-wang
112•dagurp•8h ago•72 comments

A new bill in New York would require disclaimers on AI-generated news content

https://www.niemanlab.org/2026/02/a-new-bill-in-new-york-would-require-disclaimers-on-ai-generate...
427•giuliomagnifico•9h ago•163 comments

My AI Adoption Journey

https://mitchellh.com/writing/my-ai-adoption-journey
838•anurag•1d ago•344 comments

Things Unix can do atomically (2010)

https://rcrowley.org/2010/01/06/things-unix-can-do-atomically.html
222•onurkanbkrc•13h ago•86 comments

TikTok's 'Addictive Design' Found to Be Illegal in Europe

https://www.nytimes.com/2026/02/06/business/tiktok-addictive-design-europe.html
473•thm•7h ago•352 comments

Animated Engines

https://animatedengines.com/
42•surprisetalk•23h ago•3 comments

DNS Explained – How Domain Names Get Resolved

https://www.bhusalmanish.com.np/blog/posts/dns-explained.html
102•okchildhood•3d ago•34 comments

Systems Thinking

http://theprogrammersparadox.blogspot.com/2026/02/systems-thinking.html
231•r4um•13h ago•105 comments

We tasked Opus 4.6 using agent teams to build a C Compiler

https://www.anthropic.com/engineering/building-c-compiler
664•modeless•1d ago•655 comments

Stay Away from My Trash

https://tldraw.dev/blog/stay-away-from-my-trash
136•EvgeniyZh•3d ago•52 comments

The overlooked evolution of the humble car door handle

https://newatlas.com/automotive/evolution-car-door-handle/
12•andsoitis•3d ago•23 comments

Bits About Money: Fraud Investigation Is Believing Your Lying Eyes

https://www.bitsaboutmoney.com/archive/fraud-investigation/
69•dangrossman•1h ago•54 comments

Claude Opus 4.6

https://www.anthropic.com/news/claude-opus-4-6
2218•HellsMaddy•1d ago•962 comments

Nixie-clock using neon lamps as logic elements (2007)

https://www.pa3fwm.nl/projects/neonclock/
45•jacquesm•4d ago•7 comments

Recreating Epstein PDFs from raw encoded attachments

https://neosmart.net/blog/recreating-epstein-pdfs-from-raw-encoded-attachments/
475•ComputerGuru•2d ago•174 comments

Solving Shrinkwrap: New Experimental Technique

https://kizu.dev/shrinkwrap-solution/
30•spiros•16h ago•2 comments

Plasma Effect (2016)

https://www.4rknova.com/blog/2016/11/01/plasma
74•todsacerdoti•3d ago•13 comments

The time I didn't meet Jeffrey Epstein

https://scottaaronson.blog/?p=9534
339•pfdietz•23h ago•460 comments

Show HN: Daily-updated database of malicious browser extensions

https://github.com/toborrm9/malicious_extension_sentry
7•toborrm9•2h ago•3 comments

Show HN: Artifact Keeper – Open-Source Artifactory/Nexus Alternative in Rust

https://github.com/artifact-keeper
131•bsgeraci•15h ago•50 comments

Animated Knots

https://www.animatedknots.com/
307•ostacke•4d ago•45 comments

The RCE that AMD won't fix

https://mrbruh.com/amd/
343•MrBruh•19h ago•142 comments
Open in hackernews

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
130•ostacke•3h ago

Comments

carabiner•1h ago
Random tidbit, his daughter is a researcher/mathematician at OpenAI.
hackingonempty•1h ago
...and his widow, Harriet Fell, is a CS Professor (emerita) at Northeastern[0], and an accomplished cyclist who completed Paris-Brest-Paris (a 1200km ride and to qualify you have to complete 200km, 300km, 400km, and 600km rides in the 8 months leading up to it.)

0: https://www.ccs.neu.edu/home/fell/

foco_tubi•1h ago
For PBP2027 you have all of 2026, as well as 2027 leading up to registration, to complete the required BRMs.

I'm riding my qualifying 300k tomorrow!

markstos•55m ago
Good luck!
cos2pi•51m ago
Allez!
dan-bailey•3m ago
Oh thank god. I was planning on a 200km, 300km, and 400km this year, all as mental preparation, and then having to blitz next year by traveling to warmer locales. I I'm doing my 200km at the end of April, and my 300km in early July, followed by a 400km gravel in early August. Going to be a grind.

Good luck tomorrow!

bobchadwick•20m ago
I'm never going to ride in the Paris-Brest-Paris, but someday I'm gonna make a Paris-Brest pastry: https://www.seriouseats.com/paris-brest-pate-a-choux-with-pr...
keithjl•1h ago
This website is such a treasure. When I was first getting into bicycles in 2013, it was a mix of Sheldon Brown and the local volunteer-run co-op that taught me everything I need to know. He is himself a generous spirit, advocating for DIY tooling, repair, and reuse.

I would highly recommend anyone into bicycles to try building their own wheel using his article.

fyrabanks•49m ago
Same. I built my first wheel according to his specs. His whole website is so helpful and thoughtfully written. RIP.
klum•40m ago
This is my favorite kind of website. An individual going into depth on a topic they're passionate (in the true sense of the word) about. Another example is Dan's Motorcycle Repair Web page [1]. A collection of such websites would be awesome.

[1] http://dansmc.com/

marttt•2m ago
Here's another, ultimate bike derailleur geekery -- Disraeli Gears: https://www.disraeligears.co.uk/site/home.html
marttt•5m ago
Yeah. There's probably tens of thousands of internet users worldwide with that same story. Myself included: when I was fixing my Bianchi retro road bike's derailleur etc some 20 years ago as a univesity freshman, this site was a definite gold mine, immensely helpful, and taught me a ton. One of my favorite procrastination rabbit holes as well back then. :) And -- a prime example of 1990s era internet and information freedom and layman-level enthusiasm -- selfless sharing of knowledge (and, I wonder if he also used Notepad to write the HTML :). Thanks, Mr Brown, for everything, all the way from Estonia!

PS, interesting to note that Mr Brown seemed to be quite a fan of sci-fi books: https://www.sheldonbrown.com/org/books.html

simlevesque•1h ago
RIP to this legendary hacker.
cguess•1h ago
Amen. If you've ever had to deal with repairing French frames from before the 1980s you know that finding a memory leak in a race condition is easy in comparison.
wampwampwhat•24m ago
I'm going to repeat this verbatim in my next technical interview. I still have nightmares about an old peugeot px10
cos2pi•1h ago
A wealth of knowledge here, especially helpful for wheelbuilding and checking the compatibility of archaic sizing systems. Lennard Zinn is another great reference in bike maintenance: https://lennardzinn.substack.com/
hackingonempty•1h ago
The old Web... Thanks to Sheldon for teaching me how to fix my bike, how to launch from a stop, and how to April Fools.

https://www.sheldonbrown.com/real-man.html

https://www.sheldonbrown.com/tork-grip.html

diggyhole•1h ago
Thank you for sharing. This is wholesome as f*ck.
foco_tubi•1h ago
Sheldon was a wealth of information when I first started tinkering on my vintage 3-speed back in 2007. I would pore over these simple pages for hours in my dorm at college instead of studying. That led to dropping out and working in the bike industry for almost 10 years. It was a great preparation in problem solving and systems-oriented thinking before I got into programming.
jacquesm•1h ago
I wished more of the web was like this.

if you like this you may also like:

https://outspokencyclist.com/tag/harriet-fell/

czscout•1h ago
Sheldon's website is such an awesome relic of the internet we all miss. It still has a ton of relevant information if you ever find yourself dealing with obscure wheel sizes or something like that. Love it. RIP.
rsingel•1h ago
R.I.P. Sheldon

https://www.wired.com/2008/02/sheldon-brown-w/

jmclnx•47m ago
Came to say the same, I meet him once in his shop, what a great person he was. His wife also has a great amount of bicycle knowledge from what I heard.
hilsdev•1h ago
This was a major influence for me, both getting into single speed and fixed gear biking before the craze, and building geo cities sites with my friends in high school
tetris11•1h ago
I'm so glad they went back to the old design.

There was a point a few years back where someone did a site revamp with modern CSS and all that horrible jazz in clear attempts to monetize this incredible resource.

Happy to hear they reverted

ian-g•1h ago
I used to work on bikes professionally, and this was the first place we went for help. Even today, it's one of the clearest resources out there
chromatin•56m ago
When I was a young(er) postdoc and had to overhaul my bicycle -- my main transportation to work-- this site was invaluable. Forever grateful to Sheldon.
comprev•55m ago
I learned wheel building many years ago from Sheldon's website and that lead to many great memories fixing other racer's wheels around camp fires in my 20s.

A fantastic resource!

shrubby•38m ago
Still awesome.

And the web design!

sloosh•14m ago
I always loved this quote from here: https://www.sheldonbrown.com/stuck-seatposts.html

> To update an old saying, 28 grams of prevention are worth 454 grams of cure.

behole•12m ago
Legend! I was a bicycle mechanic for a decade and this guy was our jezus! He influenced so many of my creative bicycle builds and exposed me to things like Alex Singer, Rene Herse, bicycle quarterly etc.. Big love for Sheldon and all his passion and work.
sorbusherra•9m ago
i worked as a bicycle mechanic when I got completely tired of it-world. This website saved my ass numerous times while fixing bicycles. Absolutely legendary webdesign also that just works well.