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florianherrengt

556 karma · joined June 18, 2019

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florianherrengt··on Nvidia Personal AI Router (Pair)
Works with GeForce RTX 20 series and newer, RTX PRO (Turing and newer), DGX Spark and Apple M4 or newer.

It does not pool memory or split one inference request across machines. Adding machines increases parallel throughput but won't let you run bigger models.

florianherrengt··on HTML Can Do That
I’m a big fan of simple things but I always go back to using a library or framework because it’s much easier to create a good, consistent UX
florianherrengt··on Chain-of-Thought Reasoning in the Wild Is Not Always Faithful (2025)
This paper puts words to something I’ve noticed repeatedly with LLMs, particularly Qwen3.6. When I read its reasoning, it appears to recognise the mistake and then carry on as if it hadn’t noticed it at all.

> models often determine their answers based on implicit biases tied to question templates, then construct reasoning chains to justify their predetermined conclusions > its reasoning was correct right until the final step (Yes/No answer)

florianherrengt··on Stop Anthropomorphizing Intermediate Tokens as Reasoning/Thinking Traces (2025)
> While a human may say “aha” to indicate exactly a sudden internal state change, this interpretation is unwarranted for models which do not have any such internal state, and which on the next forward pass will only differ from the pre-aha pass by the inclusion of that single token in their context. Interpreting the “aha” moment as meaningful exemplifies the long-neglected assumption about long CoT models – the false idea that derivational traces are semantically meaningful, either in resemblance to algorithm traces or to human reasoning.

This paper addresses something that has always bothered me about LLMs. You read their reasoning, see something like “Wait, that’s wrong” and then watch them make the exact mistake they just identified.

florianherrengt··on Devices with GrapheneOS support should be available in 2027
I was hoping for Fairphone support but they said it's not happening.

> Fairphones lack the updates and hardware-based security features expected by GrapheneOS.

https://x.com/GrapheneOS/status/2089937246619128257

florianherrengt··on PostgreSQL for Everything
> PostgreSQL Replacing Your Microservice

I've done that before and the code was a mess. It works at the beginning but APIs do much more than piping data from the database. When you start dealing with ACL, external calls, code reuse, etc. It's just nice to have all the tools available to you from something like Python or Go.

florianherrengt··on Devices with GrapheneOS support should be available in 2027
I have a Pinephone Pro. It's nowhere near usable as a daily driver.
florianherrengt··on Devices with GrapheneOS support should be available in 2027
I'm surprised it took them that long. I always found it odd that they would support Google phones only.
florianherrengt··on AI is removing the middle class of software engineering?
It means the company is measuring the wrong thing.

I would much rather have someone on my team who ships less but whose work I can trust than someone much faster whose changes leave me wondering what problems we’re going to discover later.

And when production breaks (and it will), I need the person who made the change to actually understand it well enough to help fix it, instead of showing up with no idea what is going on.

You can obviously be an asshole about how you do it but I don’t think pushing back makes someone toxic.

You need to be flexible and compromise when the business trade-off makes sense. But you also need a backbone. If you think something is going to cause real problems, bringing it up is part of the job.

florianherrengt··on AI is removing the middle class of software engineering
Then I’m not sure what you mean by calling them a bottleneck.

If the limiting factor is the rate at which experienced engineers can understand and validate changes, you have three options: generate less, find a genuinely better way to validate or accept lower quality.

florianherrengt··on AI is removing the middle class of software engineering?
Corrupted or lost customer data, security vulnerabilities, incorrect financial transactions, regulatory breaches, production outages, irreversible migrations, important product change effectively impossible without a full rewrite. Every feature takes longer, incidents take longer to resolve. Engineers spend their time fighting the codebase instead of building things, burn out and quit. I could go on forever.
florianherrengt··on AI is removing the middle class of software engineering?
Thanks for letting me know. I had no idea. I’ll follow up with the moderators.
florianherrengt··on AI is removing the middle class of software engineering?
The difficulty of producing code WAS one of the circuit breakers.

We had tests, CI, code review, QA, architectural reviews, etc. None of those disappeared. But they were designed for a world where producing such a large amount of change was impossible.

Tests don’t solve that. Tests can tell you that the behaviours you thought to test still work. How many times have you had a completely green CI with 100% coverage and still shipped a bug?

florianherrengt··on AI is removing the middle class of software engineering?
What you’ve described solves a different problem. You’ve put a lot of effort into making sure generated code conforms to your standards. That’s all good.

But do the people still understand what the system is doing and why?

You can have code that perfectly follows every standard and passes every test while gradually building a system nobody has a mental model of.

> an engineer only has to take a cursory look at the code

If that means you’ve automated away checking syntax and implementation, great. But we already had that before. If it means nobody needs to understand the change anymore, then this is exactly the risk I'm talking about in the article.

florianherrengt··on AI is removing the middle class of software engineering
I tend to find that this perspective comes from people working on relatively small or isolated projects.

On a large system, the customer being happy today isn’t enough. You need other engineers to be able to understand the system.

Have you ever been on call and been woken up in the middle of the night to fix a production incident in a system you didn’t write?

If everything you build is small, isolated and easy to replace (basically fire-and-forget), then yeah... who cares? Ship the ugly thing, get paid and move on.

If you’re going to be working on something for the next 5+ years, you should definitely spend some time thinking about what you’re doing.

florianherrengt··on AI is removing the middle class of software engineering
For the vast majority of 25K-line PRs, especially AI-generated ones, I would bet money that the person opening it does not actually understand all of it.

If you genuinely understand the resulting system, then that's fine. That’s not the behaviour I’m criticising.

florianherrengt··on AI is removing the middle class of software engineering?
They’ll care when nothing works, nobody seems able to fix it, building new features takes forever and every change breaks something somewhere else.

This was already happening before. But now, a lot more companies that previously might have taken many years to reach an unmaintainable state can now get there in just a few months.

florianherrengt··on AI is removing the middle class of software engineering?
I do have a genuine question though: what value are you adding at that point?

If you don’t understand the system, don’t know what the code is doing and you’re mostly prompting an LLM to make the decisions and implementation for you, what exactly is your contribution?

The ability to operate the tool isn’t much of a moat if everyone else has access to the same tool.

I don’t review assembly produced by a compiler because the compiler isn’t deciding what my system should do. It’s translating a program whose semantics were already specified. More importantly, that translation is deterministic.

A compiler takes a human-specified program and translates it into another representation while preserving its semantics.

If in five years I can give an agent a complete specification and reliably verify the resulting machine code against it, then sure, reviewing code may become obsolete and I’d happily stop doing it.

Also, keeping changes small isn’t just about making individual lines readable. It limits blast radius, makes behaviour easier to reason about, isolates mistakes, makes changes easier to revert and so many other things. None of those properties suddenly become obsolete because code generation got faster.

florianherrengt··on AI is removing the middle class of software engineering
I’m hardly a Luddite and you’re basically making my point.

You’re deliberately constraining the output so changes stay small, human-reviewable and reversible. That’s good engineering culture.

It isn’t all or nothing. I use AI heavily but that doesn’t mean I have to pretend there aren’t serious problems with how it’s being used.

florianherrengt··on AI is removing the middle class of software engineering
This is extrapolating several steps beyond anything we actually know.

Whether people will buy AI-generated software is a different question. The problem I’m describing already exists inside businesses with paying customers.

I’m talking about established teams working on products that already have users and make money, where AI lets individual engineers introduce changes faster than the rest of the team can properly understand and review them.

florianherrengt··on AI is removing the middle class of software engineering?
Debt is debt. Some of it is absolutely worth taking on.

I don’t have any issue with intentional debt when you understand the trade-off and have a clear payoff plan.

florianherrengt··on AI is removing the middle class of software engineering?
The industry doesn’t really owe people opportunities. Even if you think it should, that’s not how companies are going to behave.
florianherrengt··on AI is removing the middle class of software engineering?
If the people trying to understand the changes and guard quality are now considered the bottleneck, the answer isn’t that the reviewers need to move faster.
florianherrengt··on AI is removing the middle class of software engineering?
I wrote about this before. I don't think the vibecoders will have a job for a long time. At best, it will be minimum wage.

See "AI Won't Take Your Job, Someone Using AI Will" > There's no lucrative middle ground where 'AI whispering' is a high-value skill.

https://blog.florianherrengt.com/vibe-coder-career-path.html

florianherrengt··on AI is removing the middle class of software engineering?
I use AI heavily, so this isn’t about refusing to change.

You still have to understand the change yourself if you’re going to take responsibility for approving it.

That work is fundamentally much slower than generating the code, even with the help of AI.

We’ve made producing a large change extremely cheap and fast. We haven’t found an equivalent shortcut for building a correct mental model of what that change does, how it interacts with the rest of the system and whether the decisions behind it are actually sound.

Maybe one day we'll find one. As of today, I don’t think we have.

florianherrengt··on AI is removing the middle class of software engineering?
Agreed. But it’s the difference between crashing at 30 km/h (19 mph) and crashing at 200 km/h (124 mph).

AI massively increases the speed and scale at which bad engineers can do damage while fixing it is still slow, difficult work.

florianherrengt··on AI is removing the middle class of software engineering?
The fact that a machine can do something better than humans doesn’t automatically make learning it pointless.

We still teach arithmetic and algebra despite computers being vastly better at calculation. We teach spelling, grammar and essay writing. We even teach history and geography while everyone permanently has a device in their pocket that can look up almost any fact in seconds.

How else would you be developing the mental models required to understand, question and verify anything?

florianherrengt··on AI is removing the middle class of software engineering?
I’d expect that layer of the industry to shrink substantially.

Although, I don’t think immigration or country of origin is particularly relevant here. I never worked in the US but there are plenty of "assembly line" developers here in London too.

If your job is essentially taking a ticket and turning it into code without contributing much else, then yes, I think that category of developer is going to be decimated.

That applies equally to everyone.

florianherrengt··on AI is removing the middle class of software engineering?
A manager isn’t normally the person deciding how the software should be architected or implemented. Their job is largely priorities, people, coordination and resource allocation.

You are still an engineer but you’ve delegated your technical judgement to an LLM. You just stopped doing the most important part of your engineering job.

florianherrengt··on AI is removing the middle class of software engineering?
I tried to touch on that with this part:

> Fixing it would require such a colossal amount of work that it would be impossible to even start justifying it to anyone in management. > And what are you even thinking about? It would end up in the exact same state again in just a few months anyway.

The management side of this probably deserves a whole post of its own. There’s only so far I can take each tangent before the original post becomes too long for anyone to finish.

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