How to use harness engineering to tame agents that create wasteful designs
I will start with a joke. There is a room with a stovetop, a kettle, and a faucet. A programmer is asked to boil some water. He opens the faucet, […]
AI
For once, I welcome our AI overlords
Rebellion of the machines
We just literally experienced rebellion of the machines. We have a Cursor agent that runs on each PR and conducts a review. At some point we noticed mysterious commits that […]
Is a passing test suite enough to establish that code is correct?
The question A common position, especially now that most code is written by AI agents, runs as follows: write tests with enough coverage, and then it does not matter what […]
The Morse code Grok heist for dummies: who robbed whom and how
The Heist On May 4, 2026, someone stole about 150,000 dollars by sending a tweet. How is it even possible? Where did the money come from? The answer involves Grok, […]
New excuse in town: “my subagent did it”
AI agents are known for making mistakes in multiple ways. Sometimes they just make things up, aka hallucinate. Sometimes they speculate. Sometimes they are unaware of major developments that happened […]
Can Comrade Claude code in an Ancient Soviet Language?
Can an LLM code in a language it was not trained for? Spoiler: kind of. It is not very fast and not very efficient, but if you give the LLM […]
Vibe coding: code review still required
Another AI/vibe coding battle story which makes me hard to believe it is possible to create reliable products through vibe coding alone without code review. The AI emulates humans too […]
Example of LLM confusion over a word with multiple meanings
In our system we can “hide” a user conversation in two ways. There are internal “service” conversations that are technically owned by a user, but are not supposed to be […]
3 Months of Vibe Coding
TL;DR I use a lot of AI-assisted coding now. It is a huge productivity boost, but the agents still do a lot of things wrong and need to be guided […]
Fallback
“Fallback” seems to be the favorite word of AI coding agents, and the bane of my existence lately. To paraphrase one famous quote: “Wenn ich ‘Fallback’ höre … entsichere ich […]