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arjvik

1,549 karma · joined January 24, 2022

find me at https://arjunridesa.bike/

star my code at https://github.com/arjvik

reach me at <github username>@gmail.com

trying out arjvik.at.hn

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arjvik··on A GitHub Issue Title Compromised 4k Developer Machines
There’s a known fix for SQL injection and no such known fix for prompt injection
arjvik··on Talos: Hardware accelerator for deep convolutional neural networks
Not to take away from this cool project, but its design decisions are incredibly impractical.
arjvik··on I added a Bluesky comment section to my blog
As far as I remember, they called it a Guild in all their developer documentation
arjvik··on GPTZero finds 100 new hallucinations in NeurIPS 2025 accepted papers
I'm not sure I agree... while I don't ever see myself writing papers with AI, I hate wrangling a bibtex bibliography.

I wouldn't trust today's GPT-5-with-web-search to do turn a bullet point list of papers into proper citations without checking myself, but maybe I will trust GPT-X-plus-agent to do this.

arjvik··on The URL shortener that makes your links look as suspicious as possible
My favorite link of all time:

https://jpmorgan.c1ic.link/logger_zcGFC2_bank_xss.docm

Definitely not meta

arjvik··on The chess bot on Delta Air Lines will destroy you (2024) [video]
I personally believe that the ideal situation is in fact everyone reclining their seat
arjvik··on Open Infrastructure Map
When I lived in Texas, we had a massive storm in winter of 2021 leaving many without power for a week.

I was told that Texas maintained its own energy grid independent from the rest of the nation’s eastern and western grids, and supposedly only had a handful of high-voltage DC lines running between Texas’s and the rest of the nation’s. Supposedly this was why we couldn’t rely on excess capacity from anywhere else in the nation while our power generation capability was down.

But this map doesn’t seem to show Texas as isolated - there appear to be many lines in and out and no clear separation?

arjvik··on PassSeeds – hijacking Passkeys to unlock new cryptographic use cases
I don’t understand why you want to enforce only using the public key instead of private key - while I believe you that as of now browsers do not disclose the public key anywhere, I’d also suspect that this is far more likely to be violated and accidentally disclosed by a bug than the private key, which theoretically cannot ever leave the TPM.

Would KDF(deterministic_sign(“well-known message”)) not also provide valid entropy?

Is it just impossible to force a nonce for a deterministic signature?

arjvik··on James Moylan, engineer behind arrow signaling which side to refuel a car, dies
One of the many patron saints of engineers!

If he so believed in it, may his arrow be pointing up! :)

arjvik··on Where Is GPT in the Chomsky Hierarchy?
As a quick hack, is this flaw fixed by using top-p or top-k or min-p or whatever the current hottest logit sampling algorithm is?
arjvik··on Pebble Index 01 – External memory for your brain
How hackable is the firmware, if we want to assign different handling to the button presses?

Can we flash our own firmware to the device?

arjvik··on Reverse engineering a neural network's clever solution to binary addition (2023)
The more interesting question is is it even possible to learn the logic gates solution through gradient descent?
arjvik··on x86 architecture 1 byte opcodes
Is sizecoding the same as the demoscene?
arjvik··on Attention lapses due to sleep deprivation due to flushing fluid from brain
One signed up knowing the risk

(not defending, I also think its insane, just devils advocate)

arjvik··on Taking money off the table
This assumes risk appetite is the same. For instance, insurance works this way - in expectation you’d pay less yourself, but a 3 sigma event can bankrupt you. You willingly pass on this risk for a price.
arjvik··on The Port 6000 Mystery
These days, you really don’t need multiple ports, reverse proxies that disambiguate via subdomain or path are incredibly easy to configure.
arjvik··on Our LLM-controlled office robot can't pass butter
No Free Lunch theorem applies here!
arjvik··on Using AI to negotiate a $195k hospital bill down to $33k
Can I ask what the Google health insurance is like?
arjvik··on Evaluating the Infinity Cache in AMD Strix Halo
Hyperthreading is technically a level above superscalar?
arjvik··on US car repossessions surge as more Americans default on auto loans
> if you don't properly invest in the maintenance of the thing

For me, it's not the money that's annoying (though of course I'm not pleased by the bills every once in a while). It's the amount of time it takes to keep a car maintained! Seems like just yesterday I took a whole day remote to sit at the mechanics shop for a tire change, but now I have to do the same for an oil change! For this precise reason I end up doing a lot of maintenance late.

arjvik··on Ask HN: Abandoned/dead projects you think died before their time and why?
I’m confused why this can’t be done in software?

    mount -t tmpfs ram /mnt/ramdisk
arjvik··on Qualcomm to acquire Arduino
Almost a “do you know who I am?” moment :)
arjvik··on Qualcomm to acquire Arduino
Curious - how does one achieve this in Linux?

I assume initramfs-only with special purpose pid0 and only the modules needed statically compiled into the kernel?

What else would it take?

arjvik··on Writing high-performance matrix multiplication kernels for Blackwell
The interesting part is this is done in Pallas!

Seems like the Pallas of old has completely been upgraded

arjvik··on The best worst hack that saved our bacon
SQL requires setting the max length of a string, and its quite reasonable to set it to len(2147483647)=10 if you were expecting 32-bit int IDs.
arjvik··on There is a huge pool of exceptional junior engineers
Sounds like its time to make him an offer he can't refuse
arjvik··on Ask HN: What are you working on? (September 2025)
Very viable, please go this route!
arjvik··on Sandboxing AI agents at the kernel level
If that's the case, isn't a grep tool a lot more tractable than a Linux agent that will end up mostly calling `grep`?
arjvik··on `std::flip`

  * Some standards such as ISO 6709 (Standard representation of geographic point location by coordinates) describe points as (latitude, longitude).
  * Others such as RFC 7946 (GeoJSON) describes points as (longitude, latitude).
Using (hypothetical) std::flip to reify these APIs seems like a loaded footgun - someone is bound to accidentally use it {zero, two} times to convert between orders when it needs to be used once and wreak havoc.
arjvik··on Show HN: Swapple, a little daily puzzle on linear reversible circuit synthesis
Reminds me of the row-echelon form algorithm we learned in algebra!
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