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nokcha

1,369 karma · joined November 12, 2010

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nokcha··on LLMs could control their host machines by exploiting inference engines
I'd guess that prompt injection is the biggest risk in this setup, dwarfing the risk of exploits against the inference engine. Personally, I run LLM agents only inside a Docker container that limits the LLM's access to sensitive information and the LLM's ability to take irreversible destructive actions.

See also: https://simonwillison.net/2025/Jun/16/the-lethal-trifecta/

nokcha··on Debian decides not to decide on AI-generated contributions
> LLM generated content often (perhaps by definition) seems acceptable to LLMs.

In my experience (albeit with non-coding questions), ChatGPT 5.2 is often quite eager to critique snippets of its own replies from previous conversations. And reasoning models can definitely find flaws in LLM-written code.

nokcha··on Banning lead in gas worked. The proof is in our hair
I'd argue that environmental regulations that impede building modern nuclear power plants to replace coal power plants are net harmful. Nuclear power safety has advanced a lot since Chernobyl.
nokcha··on Google's TOS doesn't eliminate a user's Fourth Amendment rights, judge rules [pdf]
For non-broken cryptographic hashes (e.g., SHA-256), the false-positive rate is negligible. Indeed, cryptographic hashes were designed so that even nation-state adversaries do not have the resources to generate two inputs that hash to the same value.

See also:

https://en.wikipedia.org/wiki/Collision_resistance

https://en.wikipedia.org/wiki/Preimage_attack

nokcha··on EU AI Act is much worse than you think
> machinery, toys, lifts, medical devices, and vehicles

All of those seem high-risk except toys.

nokcha··on Twitter/X will let people you've blocked see your posts
It's the other way around: with the new change, the blockee will be able to see (but not reply to) the blocker's posts, but the blockee's posts will still be hidden from the blocker.
nokcha··on Are Ultra-Processed Foods All That Unhealthy?
> ultra-processed foods such as ... yogurts

> Frozen and canned vegetables are often classified as ultra-processed

I think this goes against the common usage of the term "ultra-processed".

nokcha··on Among the A.I. doomsayers
ChatGPT is arguably a general intelligence, but it hasn't escaped AFAIK -- it's still contained within OpenAI infrastructure, and OpenAI can easily pull the plug on it.
nokcha··on Could the world go PFAS-free? Proposal to ban ‘forever chemicals’ fuels debate
Most individual shareholders (especially those who just buy index funds) have neither knowledge of corporate wrongdoings nor, in practice, power to prevent them. A better model would be holding accountable the particular individuals with power and responsibility, such as in the Volkswagen emissions case where Germany criminally prosecuted executives involved in the fraud.
nokcha··on Climate change doesn't necessarily occur in a gradual, linear way
I've heard that recent changes to reduce sulfur emissions from maritime shipping have caused a sharp increase in global warming:

https://twitter.com/RokoMijic/status/1674697743380430849

https://twitter.com/RandomSprint/status/1679851033424547840

nokcha··on GPT-4 details leaked?
The "software" part of an LLM is pretty trivial -- the interesting piece is the the weights. Since the weights are mechanically generated by a computer, it can be argued that the weights are not copyrightable, just like a photograph taken by a monkey isn't copyrightable.
nokcha··on Software firms across US facing tax bills that threaten survival
I guess there might be a distinction between "development" of software and "maintenance" of software (e.g., bug fixing, refactoring, etc.)?
nokcha··on NordVPN library and client code open-sourced
I imagine a VPN is sometimes still useful when torrenting, to avoid copyright complaints to your ISP.
nokcha··on Half of Americans now believe that news organizations deliberately mislead them
Highly relevant:

https://AstralCodexTen.substack.com/p/the-media-very-rarely-...

nokcha··on The six dumbest ideas in computer security (2005)
> #4 ... "Hacking is Cool" is a really dumb idea.

This has aged poorly; nowadays, the most notable attacks are conducted by state actors (e.g., Russia and China) or for-profit criminal groups (e.g., ransomware) rather than lone hackers doing it for fun.

nokcha··on Troof on Nootropics
In regards to the difference in effect between Adderall and illegal street meth, Scott thinks the biggest difference is the dosage size, effectively around 50x higher for street meth: https://astralcodexten.substack.com/p/drug-users-use-a-lot-o...

Dosis sola facit venenum.

nokcha··on How easy is it in 2022 to find a SHA1 collision?
Question is a bit ambiguous whether it refers to a 'second-preimage attack' or a 'collision attack'.

'Second-preimage attack': You are given a message, and your goal is find another message that hashes to the value as the given message.

'Collision attack': Your goal is to construct two messages (of your choosing) that hash to the same value.

nokcha··on Ask HN: Why is Substack so popular?
Oh, I guess I was thinking mainly about online censorship by tech platforms. I think most censorship from the right nowadays is about public schools?
nokcha··on Ask HN: Why is Substack so popular?
>I love it because it's fast and minimalist.

Minor quibble about this: On large pages, it can be quite slow. E.g., on https://astralcodexten.substack.com/p/ivermectin-much-more-t... , it takes a few seconds after initial loading for it be responsive to pressing the PgDown key, at least on my machine.

nokcha··on Ask HN: Why is Substack so popular?
> "Anti-censorship" is hugely unpopular with the mainstream intellectual community these days.

I'd disagree. It's unpopular with left-leaning mainstream audiences, but among intellectuals who write for a living, I imagine that extra assurances of not getting kicked off the platform are rather attractive.

nokcha··on Elon Musk makes $43B unsolicited bid to take Twitter private
For Twitter, perhaps a good compromise would be: instead of banning problematic accounts, set to them a "default-mute" state where only people who choose to follow the account can see its tweets.

See also Section 1.F of https://www.journaloffreespeechlaw.org/volokh.pdf , which distinguishes how Twitter's 'hosting' function might be treated differently from its curation functions.

nokcha··on West Virginia wants to ban sending OTA updates to customer cars
Automatic over-the-air updates to cars do constitute a national security concern. A nation-state adversary who infiltrates the manufacturer can brick the cars, impeding the ability of essential employees to commute to work. And if the cars can be updated while on the road (either by design or by exploiting a vulnerability), it can be even worse.
nokcha··on Times are great for programmers now. How does it end?
> I mean, we've entered an age, where a farmer can't milk their cows, if the software of the milking robot has a hitch - can't plow their fields, when the gps-software that drives the tractor isn't working.

Seems like quite a dangerous situation, if something like the Carrington Event knocks the grid offline for an extended period of time.

https://en.wikipedia.org/wiki/Carrington_Event

nokcha··on French moratorium on prion studies after two cases of fatal brain disease (2021)
Looks like bleach (sodium hypochlorite) plus autoclaving is a method recommended by the World Health Organization (WHO), for whatever that's worth. https://en.wikipedia.org/wiki/Prion#Sterilization
nokcha··on LaTeX Cookbook – Collection of LaTeX Recipes
>Sometimes I can’t even abort the program with Carl+C or D after the error has occurred, and I have to close the terminal

In my experience, whenever Ctrl+C doesn't work, LaTeX can be terminated by pressing the X key and then Enter. (Look for the "Type X to quit or <RETURN> to proceed" in the error message.)

nokcha··on Against 3x Speed
> Usually speed controls aren't fine-grained enough to allow 1.7x

On most sites, you can set an arbitrary speed by executing a line of JavaScript in the debug console:

    document.querySelector('video').playbackRate = 1.7;
https://stackoverflow.com/questions/3027707/how-to-change-th...
nokcha··on Covid lesson: trust the public with hard truths
>This type of speech is already highly regulated,

Commercial speech (e.g., advertising) about drugs is highly regulated, but speech of ordinary citizens (who don't have a financial interest in the drugs being discussed) isn't regulated by the government since it is protected by the First Amendment.

nokcha··on Covid lesson: trust the public with hard truths
That study turned out to be based on unreliable self-reported education level:

https://coronavirus.quora.com/Is-it-true-that-PhDs-are-the-m...

nokcha··on Apple's Texas-Sized Problem
> Under the new TX law, Apple would be exposed to liability for flying employees out for abortion. Apple can say they don't ask employees on their medical details, but it is a risky play.

The statute is blatantly unconstitutional, and Apple has enough high-powered lawyers to fight any lawsuits.

nokcha··on Court issues permanent injunction in Epic vs. Apple case
From https://s3.documentcloud.org/documents/21060628/epic-apple-i... :

>If any part of this Order is violated by any party named herein or any other person, plaintiff may, by motion with notice to the attorneys for defendant, apply for sanctions or other relief that may be appropriate.

The penalty for contempt of court is often incarceration. Note that the order enjoins not just Apple the corporation but also Apple's officers. It would be highly unusual for the CEO of a major corporation to openly and defiantly flout a court order, but if it happens, he can expect to be arrested for contempt.

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