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jdub

4,380 karma · joined June 8, 2010

http://bethesignal.org/
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jdub··on I am retiring from fulltime writing (& pseudonymity) to launch Guardian Angel
You understand that those are different kinds of "truth", right?
jdub··on Ten advances in mathematics and theoretical computer science
With his shitty cars, orbital garbage, or CSAM generator? Or his moneyed attacks on democracy and communications? Or his vandalism of government programs without insight, experience, or qualification?

In a free and fair market, his capital would be regarded as a deeply inefficient distortion.

jdub··on Ten advances in mathematics and theoretical computer science
... which would make (our current model of) capitalism especially evil. Compared to a supermarket.
jdub··on AI's debt binge can't last, hidden borrowing reaches $1.65T
Are you sure? What is the 401(k) exposure to "AI" related stocks and broader market shocks?
jdub··on Don't be a meat proxy
"Look! I have one job on this lousy ship, it's stupid, but I'm gonna do it! Okay?" - Gwen DeMarco, Galaxy Quest
jdub··on Don't credit the LLM
the phrase "[LLM] thinks X is happening" is good chunk of the problem

it didn't. it produced an output, and you hopefully invoked some human judgement before believing it was worth sharing, and you are hopefully expecting to be accountable if that judgement was incorrect (whatever the failure mode)

jdub··on Authorize, don't authenticate
Doesn't sound nearly as good in the original Austrian (accent).
jdub··on GCC steering committee announces AI policy
"that is not an established precedent" in response to a specific claim and "there is no established precedent" can both be true without laying down a verbose foundation of caveats
jdub··on GCC steering committee announces AI policy
Given a nation* that decides "corporations are people" and "money is speech", let's not be unduly optimistic about (even temporary) legislation or interpretation.

* focusing on the US given this site and the outsized influence it has on global copyright

jdub··on Authorize, don't authenticate
(c.f. other comments about confusing misuse of security terminology)

An easy way to remember the difference between the As in AAA:

    Who is your daddy, and what does he do?
    ^ authentication       ^ authorisation
And the all too often forgotten final A is accounting, for which you can imagine Arnold writing down the interaction in his police notepad.

:-)

jdub··on GCC steering committee announces AI policy
That is not an established precedent. (It's not what that case decided.)
jdub··on AI companies are shredding rare books
Ladies and gentlemen, the Digital Millennium Copyright Act

(which is terrible, but I would be delighted if they breached it and got thoroughly spanked)

jdub··on Hannah Fry Wins the Leelavati Prize in 2026 for Mathematics Outreach
"Malcolm Gladwell has a few episodes of revisionist history"

that's a complete sentence already

jdub··on Open-weight AI is having its Kubernetes moment
This is the initial endorphin rush you get when wielding a complex system. The feeling changes when the complexity explodes in your face.
jdub··on Don't Take the Black Pill [video]
A positive vision of humanity alone doesn't bestow personal agency.

Personal agency alone doesn't solve structural dystopia.

jdub··on Do we just want slaves?
you don't deserve your user name
jdub··on “Beyond the limit”: Satellites and mirrors in space pose threat to the night sky
You reckon large language models run by this mob of billionaire boot-licking dweebs will lead to a Star Trek style utopia? Come on.
jdub··on The end of my AArch64 desktop experiment
Take a look at how modern PCs enumerate all of their non-PCI hardware. I'll put a bucket over here.
jdub··on The end of my AArch64 desktop experiment
Because they're designed for different things.

Ampere's primary focus is running lots of simple tasks concurrently, at relatively low power, with lots of I/O. So, many tens to hundreds of cores, not too fast, at lower power draw than amd64, with lots of PCIe lanes for storage and network.

Apple's primary focus is user experience and power efficiency. That's why you'll find a handful of fast performance cores and low power efficiency cores, along with graphics acceleration to drive high resolution displays.

jdub··on Qualcomm to Acquire Modular
"first principles" and "from scratch" are predictable failure modes... he had very good reason to pursue a Python-like language given the circumstances and objectives
jdub··on Stealing Is a Skill
(It feels very grumpy-old-man to complain about "low effort", but I think it's more culturally relevant than ever before...)

... not investigating your field is a massive low effort failure mode. You don't have to know your field, but you have to investigate it, appreciate it, draw upon it... even, or perhaps especially, if you're standing in opposition to it.

(This is also why "first principles" twits like Elon are so annoying...)

jdub··on Stealing Is a Skill
Whoa, I just mentioned GURPS in a completely different context in this very comment thread. :explodinghead:
jdub··on Stealing Is a Skill
Cheat: "That's in GURPS. Uh huh, GURPS. Seen it: GURPS. Good idea, really nicely executed in GURPS. You'll like how GURPS did that." :-D
jdub··on Is it time for a new Embedded Linux build system?
zig makes cross-compiling easy for a single project - but not everything is zig (or supported by zig cc)

the various embedded build systems make cross-compiling easy at scale, which means you often don't need to think about it when adding a new package

jdub··on AI agent runs amok in Fedora and elsewhere
I doubt it's that complicated, motivated, or considered...

It's probably just garden variety disrespectful behaviour.

Purposeless agent spam won't be cheap entertainment forever, but you're right that later stages of industrialised abuse will be scary and unpleasant.

jdub··on macOS Container Machines
That's a less efficient protocol than 9pfs and virtiofs, even if you subtract the encryption.

An example of improving efficiency: virtiofs has a relatively recent feature to map pages from host memory directly into guest memory, but that's a lot of risky acrobatics if your priorities are reliability and isolation...

... but it's not supported by Virtualization Framework's built-in virtiofs "folder sharing". (sad face)

... but someone could build it on top of the new macos 27+ custom virtio device support. (intrigued face)

jdub··on macOS Container Machines
These are all security boundaries of a kind, some more effective than others, balancing priorities according to threat model. Running every app on your phone in a hardware virtual machine would be... an expensive choice.
jdub··on macOS Container Machines
It's not substantially different from previous approaches (9pfs vs. virtiofs).

My suggestion: Don't use the host filesystem from the guest at all. It'll be faster, and better isolated. It's a false convenience.

jdub··on macOS Container Machines
Different threat models. Your typical Android device (and Linux server for that matter, at home or at scale) is not usually running security-sensitive general workloads for multiple tenants in the same OS instance. :-)
jdub··on macOS Container Machines
Containers (those popularised on Linux by Docker) are built on Linux primitives like cgroups and namespaces, so they're running directly on the same kernel, same VFS, often the same FS, etc. Their isolation properties rely on (a) all those Linux features working as expected, and (b) the container runtime setting them up properly.

Depending on your threat model, that's fine, but a lot of people (including me) will say that containers are not a security mechanism.

But macOS requires[1] virtualisation for containers anyway; the security is just a bonus.

[1] at least for a real Linux kernel...

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