Skills Are Where Your Judgment Goes
The model already knows the generic job. A skill is where you add the judgment specific to your work.
Debugging on Prod
The worst type of bug is one that only happens on prod. And only on prod. If you checked this blog in the past few weeks, you might have encountered a big fat 500 error.
GPU is the new oil
I see many debates on how local LLMs will save us. This will serve as a permalink answer.
Why you got that ad, in plaintext - Vishwanath Subramanian
The reason you got an ad is in plaintext. How to read ad targeting in the network tab - the ad server, deal IDs, and the tracking pixels riding along.
The Accidental Gamification of Vibe Coding — Hayreddin Tüzel
I build gamification for a living. Then, I realized Claude (accidentally!) shipped a better gamification system than anything I built all year — vibe coding hits seven of Octalysis's eight core drives, and most of the addictive ones are black-hat. Why "one mor…
Ponytail, YAGNI, and the Problem with Prompt Benchmarks
The post examines Ponytail, a popular AI coding “skill”, and argues that its benchmarked benefits appear to come largely from encouraging terse, YAGNI-style responses rather than from any deeper engineering value. By showing that a simple prompt can match or b…
Why Enterprise Agents Can't Run Tools on Laptops
Personal agents run tools locally. Enterprise agents can't — credentials, auditing, consistency, and iteration speed all break at company scale. The answer is Managed Skills: agent tools that run in the cloud.
Attention Backpropagation
How to backpropagate the attention…
Apple is about to make Hide My Email useless
Yesterday, June 15, 2026, a small and unimportant announcement appeared in Apple developer news: New domain for Sign in with Apple and iCloud+ Hide My Email. Long story short: now both Sign in with Apple and Hide My Email aliases are going to be issued on the …
Why is Meta destroying its engineering organization?
Leadership at the social media giant has been on an AI-fueled rampage through its engineering org. We report what’s happened
Build your project Zig-style
Personal website of Jan-Erik Rediger
Software Is Not A Single-Player Game
When I wrote a few months ago that code review is not about catching bugs, the most common pushback I got was a variation of the same thing:“If you’re only getting to that decision at the code revi...
My one weird trick for managing my internet addiction
The secret is a small amount of physical friction.
There’s more than one way to be a 10x engineer
June 16, 2026
Can gzip be a language model?
A while back I wrote about language modeling without neural networks, where I generated Shakespeare with an unbounded n-gram model: no weights, no training, …
We have a communication problem
This message thread could have been a meeting.
Yes, we still need engineers
Prototyping has done wonders for speeding up software delivery. I start with a clone of our UI repository and open Claude Code. I'll prompt it to help me add a button (or whatever), set up some test data, and record a demo of a full…
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My unvarnished guide to solution engineering • Max Halford
Introduction I joined Carbonfact as a first employee. In a nutshell, it’s software that takes in raw ERP and PLM data, and spits out environmental reports. I got pulled into many Sales processes …
Issues with the EML Function
Apparent major correctness issues I have found with the much-hyped EML paper preprint.
Running local models is good now
Local agentic coding has gotten great over the past few months
Where Are the Coding Tutorials?
Online Workshop: Vibe Coding for Production: https://dometrain.com/workshop/vibe-coding-for-production/ Hello, everybody. I'm Nick, and in this video, I want to talk about what I've been doing in the last month and explain why I haven’t been posting videos. …
Mechanical Watch – Bartosz Ciechanowski
Interactive article explaining how a mechanical watch works.
The time the x86 emulator team found code so bad that they fixed it during emulation - The Old New Thing
Offensive content in the eyes of a software engineer.
Banned Book Library
OverviewA long while back I had an idea to hack a WiFi smart light bulb to do something more useful to me. Actually, I had a few different ideas of things to do with them. One of these ideas was to mo…
0.15.0 - Typst Documentation
Changes in Typst 0.15.0