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What even is an OS now?

https://sockpuppet.org/blog/2026/09/25/what-even-is-an-os-now/
52•fratellobigio•2h ago

Comments

okdiendiendjefn•1h ago
What it has always been. Nothing has changed in this regard.
msla•1h ago
This is by and for people who do not distinguish between the UI and the OS, like how "MSIE" is "The Internet" for them.
Zee2•1h ago
There could be some interesting actual OS design innovations for new permissions, access control, and sandboxing systems that are designed from the ground up for these "conjurable" experiences (or even OS components themself).

Finding some balance between access and safety for vibe-conjuring parts of the OS in a way that's still powerful but won't accidentally nuke or corrupt itself.

yjftsjthsd-h•1h ago
I do think there's some interesting space to be explored in capability-based systems, but even then I think it would mostly end up looking similar to how existing systems are, just with one more element added
kristopolous•1h ago
I've heard very competent people claiming similar things. I think there's an abstraction I'm missing. I know they don't mean it literally
tptacek•1h ago
I mean it literally.
tptacek•1h ago
Oh, ok. I guess computer science is finished, then. I should have known. It's not like there's any evidence that it's been blown wide open recently.

(The irony is that all the reading that's gone into our design is like, old CSAIL papers. Maybe it's true! Maybe everything we're doing is just crate-digging through old settled computer science. That would be on brand. I should find a way to work Athena into it. Maybe we'll use Zephyr for messaging.)

isicjeicjeif•19m ago
Are you reducing computer science to… just OSs?

I guess it really is over if this is what professionals (supposedly) seem to think.

OP is right though, an OS remains an OS, same as it’s always been. What’s changed is how we interact with it and what we lay on top of it. Nothing magical or philosophical about it.

autoexec•40m ago
I think operating systems have changed. They don't interact directly with hardware much anymore and computers are filled with SoCs all running systems of their own, sometimes with entire network stacks, communicating with devices and each other, collecting and processing data and that activity can be totally invisible to the operating system the user gets to work with.
chroma_zone•1h ago
> That makes a lot of sense in a world where we’re importing all our software from strangers. It makes less sense in the world we’re heading to, where most of the software we’re carving up fiefdoms for has the same provenance.

If I'm running software written by an LLM, even if I was the one who prompted the LLM, I would still want my OS to treat it as if written by a stranger.

I know he's not necessarily talking about relaxing security models here, but he's not being very specific about his vision otherwise.

tptacek•1h ago
Nope. There has never been a "good" post written in this genre ("I'm leaving my last team, here's my new project") and I'm not going to waste interesting bits on my pro-forma transition post.

I didn't submit this! Happy to chat about it, but I feel like I was pretty clear in the post that I wasn't bidding for the front page.

zahlman•58m ago
I think you got your comment replies mixed up? I don't see the relevance of this (https://news.ycombinator.com/item?id=49851040) to that (https://news.ycombinator.com/item?id=49850998).
tptacek•57m ago
Sorry, I'm responding to the (apt) complaint that there aren't a lot of details in the post. They're right, and I'm just adding why.
cgio•
t1234s•1h ago
Kernel + Shell + Slop
einpoklum•48m ago
Don't forget systemd :-\
smnplk•28m ago
he did mention slop
pjm331•1h ago
Adult Roblox
tptacek•58m ago
I love the idea that normal people building software to solve real problems in their life is, necessarily, a toy; the only real software is blessed by our sacred priesthood of PLT experts.
pjm331•55m ago
Didn’t mean any judgement just the metaphor that came to mind

Roblox is a game where you make the game. This sounds like an OS where you make the OS.

Probably could have spelled it out more, being too pithy perhaps

tptacek•53m ago
No, you're fine, and I might be a little hair trigger; sorry about that.
chr15m•5m ago
LMAO that's horrifying.
NoDodgeQuestion•58m ago
>yet another startup nerd talking about “the future of programming” before announcing that I’ve joined, like, Sri Lanka’s answer to Uber or something.

not just startup nerd, he also make gas town and drunken rant

tildedave•46m ago
steve yegge is not tptacek (thanks for cryptopals, tptacek!)
ameliaquining•41m ago
You've misunderstood; the quoted line from the post is most likely subtweeting Steve Yegge (in particular https://steve-yegge.medium.com/why-i-left-google-to-join-gra...).
PaulDavisThe1st•54m ago
Why does this article have this title? I could see nothing in it at all that relates to the question posed by the title.
georgemcbay•26m ago
> Why does this article have this title?

Uncharitably... because eventually they hope to produce a phone that isn't running iOS or Android?

More charitably because the title is actually an important question right now in the abstract for almost everything, not just operating systems.

But the forces that shape the question are so large and hard to get a handle on when we are living through the moment that you have to start thinking about it somewhere, why not OSes?

einpoklum•49m ago
> Consider: what does computing look like in a world where many (maybe most) applications have an audience of just 1-2 people? How is software distributed? What does it run on?

The same. The slop apps remain just that. They may do something useful for you, but that's it. A bit like a branch in a repository.

tptacek•45m ago
Have you thought carefully about this? What does it mean to call a piece of software that solves a real problem you have in your life "slop"?
itgoon•32m ago
It's the same thing as looking down your nose at people who use Excel as a database because it's not a "real" database.

Yes, I'm sure we all have horror stories about spreadsheets that got out of hand, but that ignores the thousands (or more) spreadsheets that are silently productive everyday.

georgemcbay•41m ago
I agree with the gist of how weird everything is going to get, and how we are living in a time where people haven't come close to internalizing the shift.

IMO even this AI phone is doomed in the slightly longer run.

One more step into the weirdness and people will just be working with AI to build their own bespoke phone with the specs sent over to a manufacturer that is "like PCBWay, but spits out whole devices".

I have no idea what this does to society, the economy, etc when we reach a point where nobody really "needs" any kind of middleman for almost anything (well, except for things they actually really need, like food and shelter), but it looks like I'll see it happen for a bit before I die.

mrkurt•15m ago
Hardware is still constrained by compromise. If I want a screen for movies with a battery that lasts and doesn't burn my leg when it's in my pocket, I give up a physical keyboard and nice speakers and a bigass physical camera lens.

The physical device that is best for me is probably the best car compromise for several million other people.

if my ex calls and I want my glass brick to flash the "help me" in SOS on the screen, play Hector Berlioz, and dim all the lights in the room – I can have that. I don't have to want the same thing a million other people do.

dist-epoch•40m ago
Taking it at face value, it seems to me this will also collapse and get folded into the model.

Unclear what will be left next to it. It will just live on your phone and take care of everything. The apps will be markdown files describing what they do, probably compiled ahead of time for latency.

But the model will be in control, so what else is left to implement besides giving it bash, a compiler and a display?

I guess there is value in the year before that happens.

Xirdus•40m ago
In my opinion, this post misses the forest for the trees. Yes, the model of an OS running various off-the-shelf apps for various tasks will soon become obsolete. But it's not the idea of the OS that's outdated - it's the idea of apps. Why would you ever want to ask an AI to make an app for you to complete some task, if you can instead ask the AI to complete the task directly? The future isn't a bunch of extremely personalized apps - the future is a single AI assistant doing all the work.
kevindamm•36m ago
An AI assistant can give different answers for the same inputs. An application written by an AI assistant, if it doesn't just call an LLM at runtime, will mostly likely produce the same answer for the same inputs. That is, unless there's something intrinsic to its business logic that makes it nondeterministic.

Sometimes you really want the latter even if the former is less effort.

toomuchtodo•33m ago
I want an agent studio and execution sandbox where my LLM driven assistant builds and maintains my apps with a receipt or SBOM like history of what it did to create each app. Determinism built per use case with non deterministic assistance orchestrating the build and management layer. Extra credit if I can trivially share and collaborate with others per “deterministic silo” via a shared link. Something like Claude Code + AWS Lambda|(Docker|Podman) + Tangled.org with LLM code generation for my phone and workstation.

The LLMs empower for building, the determinism improves output-expectation alignment. It’s fundamentally an on device software factory, hypervisor, and storage system.

Terr_•23m ago
> my LLM driven assistant builds and maintains my apps

Remember when everyone was talking about treating computers as cattle rather than pets?

This seems like a weird inversion. Programs as pets instead of cattle. Toxoplasmosis, ahoy...

copperx•37m ago
A bunch of dot files, obviously.
coaltree•22m ago
Is this how the internet finally dies? Not with a bang but with the whimper of thousands of AI slop apps scrapping websites into oblivion?

Most of these problems the slop apps can solve are dependent on gathering information to answer questions. If no one ever visits weather.com to get weather information, ad revenue will completely dry up and the site will go under. Then the slop stops slopping and I can’t get my hyper local weather app to work.

I’m not going to go as far as to say this article is wrong, in fact in this cursed timeline it’s probably right. I just don’t see how it’s good.

iamnothere•10m ago
Ironically this may finally force the fulfillment of the Web 2.0 paid API service dream. Remember when people were pushing companies that just provided a paid API?
TacticalCoder•14m ago
> What even is an OS now?

It's the thing that runs your AI agent, that runs your AI pocket bot (AIBI looks cute btw), that runs the software doing the training of AI models, that runs the datacenters doing the inference, etc.

There's still data. There are still bits moving. Filesystems and networking aren't going anywhere.

In a charitable reading the title is something like "what is even a desktop OS now?" or "what is even a consumer OS now?".

As for the new project, I've got one bet: there's Linux involved to host it.

Linux is an OS.

P.S: as a sidenote the entire "users don't install apps anymore" was already true to some extent. A shitload of users are totally fine with an OS that runs a browser and that's it. And they're fully operational. And we still all know what an OS is, even for, say, a Chromebook. Heck, I'm not even sure "installing apps" as ever been, except during the first install of the OS, what an OS was ever about.

Artoooooor•12m ago
So - yet another way to turn a computer into a subscription service (to pay for the AI providers). No, thanks.
Joel_Mckay•10m ago
Honestly?

1. spyware launcher

2. adware launcher

3. sales-funnel/app-store launcher

4. web-browser and game-engine launcher

5. content-production and accounting applications

6. nerd stuff that 5 other people care about...

I could be wrong, but have yet to see evidence to the contrary with users. =3

https://youtu.be/q225u-qGpas?si=9QH6gw4gOUxnAKZy&t=9

edelbitter•9m ago
The OS is the distilled wisdom of other experts. Wisdom that neither I, nor the current generation of next-word-guessers, could possibly keep pace with; no matter how many reddit bots the frontier lab operates in its attempt to extract complex concepts into simpler vectors. It will be the collection of things that are so unbelievably expensive to reinvent and re-learn for each machine and user, that they are not subject to to the market forces that come with making the slop cheaper. Any well-maintained OS will maintain that role. And be ever more important in the future, as apps diverge into even lower quality and even less shared benefit from improving them (for the other approx. 2 users).
52m ago
I think OP may be onto something real, while you are definitely right if we translate concepts directly. But maybe the challenge, with current platforms included, is because we try to cram identities by reference. If a phone had its own identity, with which you transact as with any party then lots of the security concerns would dissolve. To tone down crankiness, I refer to identity in the technical sense, not personality etc. This doesn’t solve the challenge but it might point to a different foundation for a security model.
lesam•35m ago
If the phone injures or defrauds you, does it have to make restitution? If so, how?

'Transacting' requires not only identity but accountability, a completely controlled-by-you phone cannot meaningfully transact separately from you.

toomuchtodo•16m ago
If the code works good enough, it works good enough. If good enough is insufficient for success criteria, you’ll have to trade app evolution velocity and flexibility for more determinism via more human effort (“artisanal hand crafted”), evaluated on a per use case basis. “Does this software have to be good? How good? Have I hit diminishing returns yet?”

Pros and cons to code being cheap to generate now, it’s always about tradeoffs. I don’t want to build cars, I want to drive cars.

novafunc•26m ago
And when applicable, the program would be much more efficient than the LLM.

So it would really be beneficial for the LLMs to be able to have their own environments to write and run code, but also to store those programs for later use automatically.

copperx•35m ago
This is the part that many people are missing. Decades ago I heard "the ideal UI is a search box," and I agree today even more.

I don't understand why people are still thinking that clicking on stuff will still be a desirable thing in the future.

mrkurt•9m ago
Inputs for the ui might be me talking, or typing, or having someone else talk or type. They might also be GPS, temperature, BLE devices nearby. Or maybe a button I smash because I don't feel like re explaining something.

What happens after an input is still the best part of a UI. We like seeing/hearing/feeling things in different ways.

dyauspitr•2m ago
What you’re describing is basically a terminal. We’ve had those for a while.
mentos•26m ago
Had this thought this morning after seeing DHH announcing that Basecamp isn't writing code by hand anymore and they're using AI to write Rust for Hey's backend.

To me they're failing to see the even bigger picture that maybe even Hey itself is outdated in the Ai era and not only is its Ruby framework antiquated... the whole Hey service is too.

autoexec•21m ago
> Yes, the model of an OS running various off-the-shelf apps for various tasks will soon become obsolete.

I doubt it. Most people would rather stab at their phone to download an app that just does what they want than explain to a chatbot over a period of minutes/hours and several reiterations to get it to spew out what they want, let alone what kind of software they want it to make for them. Most people can barely articulate what they want in the first place.

The market for applications isn't going anywhere and neither is the OS. I can't imagine booting a computer directly into a chat window where I have to explain to a bot what I wish would show up on my screen, where on my screen, and how it should look. What a total nightmare that would be!

Even if what passes for "AI" these days was as smart and capable as the computers on Star Trek (and it very much isn't) you wouldn't want to ask it for everything. Even the Enterprise had an OS that people interacted with. What they also had though was an OS with configurable interfaces that people could customize according to their current task and preferred workflow.

That sort of thing is maybe possible in the future for "AI" empowered operating systems we might live to see, but 90% of the people using computers aren't going to bother with any of that, just like they've never seen the settings/options in most of their applications or their operating system right now. Not because it couldn't make their time working the computer better, but because they just can't be bothered.

The writer of this piece remembers how, as a child, computers promised to let him write his own software and games and it seemed like there were endless possibilities until the reality that programing takes effort killed a little of that enthusiasm (although not enough that he didn't eventually become a programmer), but many people never see a computer as anything more than a means to an end or a device for mainly passive content consumption.

detourdog•19m ago
It’s funny you say this because Apple resisted an App Store for apps. They originally expected web based apps. The market demanded an App Store. Remember web snippets where one could clip a portal to view a small section of a website?
Sharlin•17m ago
Like browsing TikTok or messaging your friends? People want their devices to work like their friends’ devices do. Your prediction seems to be out of touch with how and why people actually use computing devices. Nobody actually uses them to "perform tasks".
cogman10•6m ago
> if you can instead ask the AI to complete the task directly?

Going to entirely depend on the nature of the task and where AI pricing goes in the future.

Would you like to spend $0.10 on every task or would you like to spend $1.00 to make an app that does it free for you forever?

I don't think it'll be one or the other.

But also I don't see things like video games ever being replaced by 1 off AI. If for no other reason then the fact that a lot of games are fun because of multiplayer capabilities. That's not something you can do a 1 and done with AI (unless you only want to play games with family and close friends).

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