Gregor Riegler

A code review is pointless when you can't improve the code right there. The improvement is the point.

Mark your calender: Saturday, 14th Nov 2026 Global Day of Coderetreat in Vienna -> insights.squer.io/gdcr-2026

This is a whitewater kayak - the speed ceiling is about 3 mph. Once you hit the ceiling, trying harder gains little. Its speed limit is determined by the shape of the boat. The same is true for your codebase. No matter how much energy, people or agents you throw at it. Unless work on the shape.

My thoughts on the recent TDD with LLM discussion. Theatre? gregorriegler.com/2026/10/03/t...

The Last Year Has Changed Everything I Knew About TDD After 20 Years | @emilybache.com 📽️ AVAILABLE NOW Watch HERE ➡️ youtu.be/wK5WgbqtI50

I'll be speaking at code.talks this November. The talk is: "Who Needs Craft Now?". Tickets are currently reduced. codetalks.com

We keep telling AI what to do. But that's not where the value is. The problem is not that it doesn't know things. It does. The problem is that it doesn't understand. And so it doesn't know what questions to ask. That's what it needs us for.

When I tell an agent to find something worth refactoring, no pressure to finish, the results are better than when I just say "refactor this." It's completion bias. Small study, treatment won 7 of 10 examples: github.com/gregorriegle...

Practice context discipline: The Yak Shaving Kata Work through the coding exercise to stumble upon unrelated problems you need to solve. Not allowed to reuse the same context and not allowed to do it in the same version control change set. How will you solve that? github.com/gregorriegle...

I have the luxury to say, “this is too complicated, I don’t understand, I don’t want to understand, I have to refactor first”. AI doesn’t. Craft has always been about the principle of least effort. It makes sure what goes into our mind is worth the space. gregorriegler.com/2026/04/12/t...

Here's what I'm missing in all the TDD Agent Harnesses I've seen. No one's asking the question: Is the existing design ready for the next red test? Or do we have to change something first? ​The Agent is just crushing through like a bulldozer, no questions asked. Well, that's not how this works.

It’s easier to see a problem than to avoid it. Even for LLMs. Models can often explain what’s wrong with an answer more reliably than they can avoid generating the flaw in the first place. Detection is a classification task. Avoidance is a generation task.

Complexity Wall (noun) The point where a system becomes so complex that there is no intelligence left to make progress in a reasonable time.

Agentic coding won't work with your PR workflow. It will incentivize larger, crappier, unreviewable, LGTM batches to hit the complexity wall fast. We need is a workflow that enables MMMSSMF (Many More, Much Smaller Steps, More Frequently), so that we can speed up while still being able to review it.

Spec-first approach is counterproductive when using AI. What AI brings to the table is superpowers to engage in serious exploratory, experimental approach to engineering.

In agentic coding, don't obsess over rules. Build tight feedback loops and iterate. You gain far more from iteration than from rules.

Join us for a day of coding excellence -> Global Day of Coderetreat 2025 in Vienna -> insights.squer.io/gdcr-2025 #gdcr #coderetreat

The richest man on earth owns X. The second richest man on earth is about to be a major owner of TikTok. The third richest man owns Facebook, Instagram, and WhatsApp. The fourth richest man owns The Washington Post. See the problem here?

Given that we now understand we’ve been training AI to guess rather than to admit when it does not know, it should make us reflect on exams and the way we educate people.

We never needed a senior doing the work of 10 juniors. What we need is a senior doing the work of a senior, together with a junior.

I tell my agents to conclude with their confidence level. GPT-5 almost never gives me [10/10 confidence], while Claude Sonnet 4 does it very often. To think higher confidence is better would be foolish.

Elon Musk spoke by video to Tommy Robinson's anti-immigrant rally in the UK today. "You're in a fundamental situation here where, whether you choose violence or not, violence is coming to you," said Musk. "You either fight back or you die."

Russia violates NATO airspace, and Trump acts like he’s live-blogging The Bachelor.

No other POTUS in history would make such flippant posts and statements about attacking an American city. The fact that this stuff is commonplace in the current administration and tolerated by so many is testimony to the moral rot we are suffering as a nation.

Considering the effort I spend making sure the agent only reads what it has to and to bring this into the simplest form, eliminating all noise, and to ration this in small as can be contexts. It makes me wonder. Why didn't we do those things earlier - for ourselves? Do we not care?

A lot of people were asking about examples for my "Augmented Coding - A Pattern Language" post. So I was iterating over it and added some. I also added new patterns. gregorriegler.com/2025/07/12/a...

How is it that Atlassian builds tools that: - SO MANY people use - SO MANY people dislike (JIRA, Confluence. Previously also HipChat) They are defying the conventional wisdom for business success that starts with "build something people will love"

Paris hat die letzten Monate für 9,6 Mio. Euro seinen Rathausvorplatz entsiegelt und einfach in einen neuen Stadtwald verwandelt. Das Ergebnis sieht so wunderschön aus❤️

As @socrates-conference.at 2025 is getting closer: Which sessions did you enjoy most last year? Quick reminder: We had all these socrates-conference.at/schedule/ For me, it were the #DDD discussions and the "Coding Fun" sessions with @codecopkofler.bsky.social

fightchatcontrol.eu This is essential to our democracy

A problem with modern LLMs is that they are so convincingly anthropomorphic now that when they produce wildly incorrect responses like this one, my reaction isn't "oh, I found a bug", it's "you're a lying sack of shit!"... and that level of emotional reaction to a piece of code really isn't healthy.

I expect that consumer-facing AI programs will continue to improve and they may become much more useful tools for everyday life in the future. But I think it was a disastrous mistake that today’s models were taught to be convincing before they were taught to be right.

When you're faced with a problem, don't think: "What's a possible solution?" Think: "What information am I missing?"

I had a lot of fun doing augmented coding as of recent and decided to capture my learnings in a new blogpost. Here is what I learned: Augmented Coding - A Pattern Language gregorriegler.com/2025/07/12/a...

Pro Augmented Coding Tips: -Define the process using .md -Keep context small -The agent creates it's next context -Preserve cross-context memory in .md -Keep the code running -No new code without a failing test -Filter needless script output -Small steps and iterate -Iterate on your process files

I am trying to Roll Forward when I should have Mikado'd. We all need reminders to take smaller steps from time to time.

The Efficiency Delusion

Neue Doku: US-Milliardär Elon Musk soll das Ziel russischer Agenten gewesen sein. Sie sollen sich in sein Umfeld geschleust haben, am Ende soll es sogar Kontakt mit Putin gegeben haben.

Upcoming opportunities to get some online training with me in May: How to introduce Ensemble to a team - with @nitsan.bsky.social sammancoaching.org/training/int... How to deliver Learning Hours - with @codecopkofler.bsky.social sammancoaching.org/training/del...

I released a game on the #appstore a few years ago—it was so polished that I didn’t expect to patch anything after extensive testing. Well, it got delisted because the last update was *too long ago* 🙃 #gamedev

About time. Harvard Will Not Comply With a List of Trump Administration Demands - The New York Times www.nytimes.com/2025/04/14/u...

Why I Believe #Lombok Should Be Discarded from #Java Projects

Musk's interpretation of "free speech", his main argument to buy Twitter!

Ich will es nicht überverkaufen, aber #Adolescence auf Netflix ist ein Meisterwerk. Schauspielerisch, inhaltlich, dramaturgisch, technisch überragend. Ohne einfache Antworten, aber gerade deshalb außerordentlich relevant.