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jdw64

2,864 karma · joined March 8, 2026

doogwoo@gmail.com https://www.makonea.com/en-US I am a freelance programmer in Korea, so feel free to contact me if you have any work.

No promises on code quality, of course. Cheap things are cheap for a reason, right?

It's not work-related — feel free to reach out just because you want to get closer

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jdw64··on I could've accessed 17T Microsoft records
I wish I had that kind of talent when I was 16 too... I'm jealous.

And it's really amazing. I wish I could think like that, and it's impressive how deeply you immerse yourself in it.

jdw64··on I can't tell who's teaching who anymore
In my country, Korea, genre fiction communities are huge. So AI-related writing has become quite trendy lately.

In Korea, people call the AI writing style "쇠맛 the taste of metal.(or metallic taste)" They say it tastes like a machine.

When Koreans generally define the metal taste, they usually put it something like this: "The plot is terrible, but the sentences are really excellent and refined."

Generally, unless you're using a fine-tuned local model, sentences with that metal taste are considered refined. So there's this irony where people say writing not done by AI lacks refinement.

In fact, even very famous Korean authors have been caught using AI, but people didn't really notice—they just felt the prose had become very elegant.

Anyway, I'm rambling, but the thing is, AI sentences were basically "learned and erudite" by default. When I entered grad school in Korea, I was taught where to use hyphens, told these were "things you need to learn when writing papers," and learned language techniques while being taught how to write papers—and AI uses those techniques really well. So it's ironic.

It's just a shame that in order to avoid writing with that metal taste, you have to avoid the very vocabulary that used to be recommended.

jdw64··on ChatGPT Pro 500
Is AI development hitting its limits?

The performance changes between models are almost static. Recently, GPT has shifted almost entirely toward token efficiency.

Astra is good at making 3D assets, but realistically its coding was not as good as GPT 5.6 Sol.

Have we reached a point where getting better at one thing means starting to get worse at another?

This announcement is the worst one yet.

Nerfing existing usage A more expensive top-tier plan Showing off how slow Dots is right in the demo video And GPT Space—are they telling us to use it instead of Notion or what...

Overall, throughout the entire announcement, everything OpenAI wants me to look forward to just leaves me, as a developer, disappointed.

jdw64··on GPT 6.1 Sol: Near-Astra intelligence for a fifth of the price
GPT 6.0 Sol was so terrible—I wonder if 6.1 Sol will be good?
jdw64··on Dots
I heard they use GPT Space (like Notion) together with Slack and use it like a human colleague, but watching the actual demo video, the speed is so slow it's shocking..
jdw64··on Using any C++ library in Godot
No. If you try Bevy, it feels different from ECS and ordinary OOP. So it's hard to get used to. But Godot, although GDScript has performance issues, if you use GDScript it's easy to port to mobile and web games, and the syntax itself is OOP, so it's easy to adapt to.

A lot of people complain about OOP, but it's a paradigm very well suited for rapid development.

jdw64··on Using any C++ library in Godot
C# is mostly in the Unity community. I agree that GDScript performance isn't good.
jdw64··on First Steps of the PLC Organization – Independent Public Ledger of Credentials
I came in thinking it was P(rogrammable) L(ogic) C(ontroller), but this is something I've never seen before. Is there anyone who could explain this PLC to me?
jdw64··on Meta Blocks President Lula's Facebook Page, Campaign Ads 2 Weeks from Election
I was writing a long post, but I just deleted the comment. I disagree with what you just said, but my reasoning feels a bit contrary to Hacker News, so...
jdw64··on Sonnet 5.5
Sonnet 5.5 is way better than GPT 6 Sol. Does that even make sense?

Sol should basically be compared to Opus, but 6 Sol has lower performance than 5.6 Sol.

On top of that, the usage allowance has dropped way too much. And this is on the Pro plan...

jdw64··on Coding Is Not Solved
A very well-known Korean company used to outsource software development.

But they gathered employees who had been working as PMs at that company and developed a product using only prompts. It turned into a project where fixing one bug created ten more, and nobody could understand why the bugs were being generated.

Management framed it as "the beginning of in-house development and the end of outsourcing," but the employees who actually contact me about work say things are going badly.

In fact, there have been several incidents in Korea related to vibe coding.

So I don't think coding is a solved problem.

Even when I code with AI, it's not really my code, so fixing bugs is hard... I don't think coding is a solved problem.

jdw64··on Does Reddit have an astroturfing problem? What the data suggests
Isn't there? Especially when crypto was booming, that kind of opinion manipulation definitely existed to deceive people. I've actually seen it in freelance requests before too, and most of the time they run it through phone farms.

I've also heard it happens in some games as well, but either way, the one I can say for certain is crypto.

jdw64··on Evolving programming languages in the AI era
This is a mascot I commissioned from an artist I know.

It's a nautilus. If I remember correctly, the original idea came from `gyre -> spiral`, so I attached meaning to the spiral shape of its shell.

The reason gyre ended up in the name was that I had this idea that a world, or perhaps a program, keeps curling inward through layers.

At the time, I was studying state machines. Once you define a state machine, you also define its state space: how far that space can expand, what states are possible, and where its boundaries are.

But the more I programmed, the more I felt that software kept repeating the same structure inside itself. You establish an outer boundary, then inside that boundary you create another state space and another boundary, and then another one inside that.

So I started wondering whether a program is something that begins by defining an outer frame and then keeps spiraling inward.

When I first started designing the language, one of my biggest inspirations was D&D.

That's partly why I chose words like `ability` instead of `interface` or `trait`. The idea was closer to, "this subject must have this ability," rather than "this type implements this interface."

I like fantasy games, and most RPGs tend to describe their worlds using fairly similar concepts and vocabulary.

Around the same time, I was reading material about Simula 67. What interested me was the old question behind Simula: how do you represent a world using a programming language?

When humans describe worlds, we probably do it most extensively in fiction and games. So I thought: why not build a programming language using words humans already use when describing a world?

I started collecting those kinds of words and turning them into language concepts.

Originally it was just a small language with a C backend. Then AI arrived, I became more ambitious, and the project gradually grew much larger than I initially intended.

So there is a `World`, and inside the world there are `Zone`s. At first I considered using `Realm`, partly because of D&D, but in Korea people tend to use the word "zone" much more naturally for this kind of spatial division, so I ended up with `Zone`.

The project has grown quite a lot since then.

It's still incomplete. The source of truth for the semantics is not fully closed yet, and there are many rough edges, although I've confirmed that at least some of the basic ideas actually work.

I'm also trying to make it a memory-safe systems language without relying on a GC.

One of the inspirations was Vale, an experimental language that explored generational references. I took that idea and tried to expand it into something broader: in Pergyra, I think of a `Slot` as a resource identity, and the compiler tracks transitions in the state of that resource. (Vale itself seems to have moved away from that approach in its successor, Valen.)

The compiler pipeline is roughly:

`HIR -> DIR -> RIR -> MIR -> backend`

At the RIR level, memory accesses are interpreted as resource-state transitions, and resource operations are normalized there.

This does mean that Pergyra can carry more runtime machinery than some other systems languages when those checks cannot be eliminated. On the other hand, the same resource identity model has been useful for reasoning about parallel access and concurrency.

I still don't think I can honestly claim that the language is completely memory-safe yet, and I'm not even sure whether this approach will ultimately turn out to be the right one.

But as the design evolved, I noticed the same spiral structure appearing again:

`World -> Zone -> ... -> Slot`

The layers keep curling inward.

That's why I chose the nautilus.

There's another meaning I like as well: the nautilus is often described as a "living fossil," and in a way I'm taking an old question from Simula — how should a programming language represent a world? — and trying to revisit it from a different direction.

I don't really expect the language to become successful. I'm not even sure I've written the compiler particularly well. I'm currently using it in a few small projects to see whether the ideas survive contact with real software, but I don't know how far it will go.

Thank you for taking an interest in it.

My personal goal, though, is much simpler: I want to make a game in my own language.

I think that part is probably achievable within the next two years.

jdw64··on Meta Blocks President Lula's Facebook Page, Campaign Ads 2 Weeks from Election
Last time I looked, Lula was favored, but this time it seems he's about even with the far-right opponent, Flávio. How do you think it'll turn out?
jdw64··on Evolving programming languages in the AI era
I'm also making a language. Of course, it's a project no one will use, and I'm building it with AI, but I enjoy translating my thoughts into it.[1]

Personally, I think new languages will end up taking a form similar to the grammar of existing languages, but with different semantics. That's because when I tried a completely new grammar, the AI couldn't generate code well, so I ended up spending time bringing in TypeScript's grammar and converting it into my language's mental model.

My language isn't anywhere near as sophisticated as the languages the developers here boast about creating (it's actually lower), but these days it at least runs, even if it's full of bugs. So sometimes I think that many people like me will develop languages, and that programming might end up becoming fragmented.

[1]https://github.com/srtdog64/PergyraLang

jdw64··on Japan moves to tighten rules for foreigners
I agree, but unfortunately, looking at the news from Japan, far-right support rates are higher than one might expect.

So it's true that those in power are harming innocent people in order to maintain their power, but it's also true that Japanese people believe they are being harmed by foreign immigrants.

And some of it is actually true. Of course, conversely, there's also the problem of many Japanese companies hiring Southeast Asian workers at low wages and mistreating them.

But whether it's me as a Korean or Japan, both tend to have a certain authoritarian mindset instilled based on "ethnic" identity. So one aspect of this policy is "we only welcome rich foreigners who spend money and leave," and the media responds accordingly.

Strictly speaking, if you look at these policies strengthening restrictions on foreigners from a third-country perspective, you can see them from the angle of far-rightization. That is, sanctions against outsiders for the sake of internal cohesion[1]. But considering the severe aging population in Japanese industry right now, it's effectively cutting off one's own nose to spite one's face.

However, East Asians receive a somewhat different education from you, so that's how it is.

The real cause is the failure of Abenomics and the resulting weak yen, which benefits financial companies and exports but sacrifices the Japanese people—the incompetence of the regime is the problem. But because it's hard to grasp all of that complex background, people want to attack something else that's near them.

And also, because the morality of some underdeveloped countries (I know it's an example...) differs from that of developed countries, friction often occurs. Just as the sense of time differs between agricultural regions and cities, for instance.

[1]https://csrda.iss.u-tokyo.ac.jp/socialresearch/pr/26PressRel...

jdw64··on Japan moves to tighten rules for foreigners
It seems like a difficult problem to me, since there's no right answer.
jdw64··on Reflections on 1,000 Days of Math
I'm a bit lacking intellectually, and I wonder if learning more math would make me a more intellectual person.
jdw64··on How to keep enjoying programming in a world of LLMs
Still, isn't programming fine as a hobby? Honestly, when I program, I hand off the parts I don't want to do to AI, and these days I just do what I want to do. It seems like something worth doing as a hobby. At work, you're forced to use AI to meet deadlines, but as a hobby it seems perfectly good too.
jdw64··on How I changed teaching after AI managed to do all my homework assignments
This makes me think of exams — I always did well on open-book exams, but I didn't do well on exams where I couldn't look at the book. Whether it's because of ADHD or just a lack of memorization ability.

Similarly, I did well in interviews where I could use the internet, but I didn't do well in interviews where I couldn't use the internet.

Everyone has a testing format they're good at. I'm curious about how this kind of thing is evaluated, and whether there are any papers related to this.

jdw64··on Can AI Shopping Agents Be Trusted?
But what I'm more curious about is why you'd need to give shopping instructions to an AI in the first place.
jdw64··on First Principles Thinking
Sometimes I don't understand what "first-principles thinking" is, or what exactly you have to tolerate in code for it to count as first-principles.
jdw64··on Topcoat is pushing the boundary of server applications with Rust
cute app
jdw64··on Topcoat is pushing the boundary of server applications with Rust
I used it in the early days, and it seems it's still the same. Thank you.
jdw64··on A Eulogy for the Software Engineer
I don't think a eulogy is necessary, honestly. It'll probably keep being needed anyway, judging by recent trends.
jdw64··on Topcoat is pushing the boundary of server applications with Rust
Has anyone here tried it?
jdw64··on Women Who Sold Books Door to Door
>if she were his sister, he would murder her rather than allow her to canvass.

Looking at this, I really feel that social norms have changed a lot. In each era, women's rights have shifted back and forth—sometimes equal to men's, sometimes lower. These things keep changing from generation to generation, and I'm curious how they'll change in future generations.

jdw64··on Feds Target AI Critics as "Foreign Agents"
Hello, "foreign agents" of Hacker News. What country are you from?
jdw64··on Claude Opus 5.5
Opus 5.5 fills up the limit way too fast, even though they increased it. I'm subscribed to Max 5x, and with the previous Opus 5, I didn't usually hit the 5-hour limit even when doing the same tasks (I mainly work function by function and then stitch them together). Now, with the same tasks, I hit the 5-hour limit in under an hour. It seems like Thinking has been built into the default model, but the 5-hour limit fills up so fast that it's hard to use it properly.
jdw64··on GPT-6 Sol and Luna
Looking at this, AI still has a long way to go. In Sol Max, the pelican's legs are missing on one side—how can one side have two pedals and two legs...
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