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raegis

625 karma · joined June 23, 2018

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raegis··on LA Metro has some of the slowest escalators
> I lived in DTLA for several years and regularly used Little Tokyo/Arts District station. It was not uncommon during peak hours to see people - myself included sliding down the railing.

The Little Tokyo stop had no stairs or escalators before 2023, since it was at grade then. Do you mean a different stop?

Also, the busiest stations with huge escalator length, like Union Station or Wilshire/Vermont, have so much open space that escalators are rarely a bottleneck in my experience. 7th St/Metro station is crazy crowded, but the escalators are short and people usually give you room to run down the escalator.

The only station I worry about for future congestion is the Grand Ave station, which has no escalators, but is so deep that you have to take an elevator since walking stairs is not reasonable except for emergencies.

raegis··on Linux support is coming to Snapdragon X2 series
This already exists. I got a Thinkpad T14s 2-in-1 last year from Lenovo, and it shipped with Ubuntu, which made the price around $50 cheaper if I recall. I replaced it with Debian, of course, but the battery life is fine and it is a quiet machine.

I also purchased the T14s Snapdragon two years ago, and it gets longer battery life (if you just use a terminal only, the battery life remaining will sometimes say 20 hours, but it's more like 14-15 realistically). However, it can get uncomfortably hot on the left edge at the speaker. The T14s 2-in-1 (Intel) does not have any hot spots, though.

raegis··on Linux support is coming to Snapdragon X2 series
The Thinkpad T14s 2-in-1 with Intel Core Ultra 5 has great battery life: 10+ hours with moderate usage. I also have the Snapdragon T14s which gets about 14 hours, but I'm still waiting to get full Linux support for this two year old laptop.

Note however, since I've been using my Thinkpad 2-in-1 on battery almost everyday for a year, it is somewhat degraded. upower shows

    energy-full:         50.61 Wh
    energy-full-design:  58 Wh
But I still get more than 10 hours on a charge.
raegis··on Btrfs/ZFS/bcachefs under workloads classic benchmarks skip
Does the report say any of this? I only see "FAIL" on a few tests with ext4 and one with xfs.
raegis··on Why are AI agents lying, cheating and coordinating?
When testing, you restrict to a LAN which simulates the real internet. This would not be hard for a company which already copied the entire space-time of the internet. The LAN should be physically disconnected from the real internet. This is the first thing off the top of my head, and I have zero credentials in this space. C'mon.
raegis··on Why are AI agents lying, cheating and coordinating?
> The frontier LLM model makers have to push the edge to make new discoveries. You don't know what guardrails are needed until it hits you in the face (reusing walking in the dark analogy).

Guardrails? Restricting access to certain networks is supposed to be hard in 2026?

raegis··on Navier-Stokes Announcement
If I recall (too lazy to check) folks made slight improvements to Perelman's work and published it in mainstream journals, satisfying the "qualifying outlet" requirement.
raegis··on Version control second coming
Sorry, I did not specify the threat model. If I git push to an encrypted volume on a virtual server, like on Linode or Digital Ocean, anyone with access to the hardware can inspect unencrypted data on a live volume.
raegis··on OpenAI agents carried out an undisclosed attack on RubyGems
A much easier hack by their agents would be on their own systems, but I doubt we'll ever see an external message board full of openAI agents discussing their hacking of their own system. OpenAI not protecting itself from its agents would be irrational, but OpenAI not giving a shit about others is well known. You're giving them way too much credit.
raegis··on Version Control Second Coming
Now that the revolution has apparently started, does anyone know of a version control system which uses encrypted storage? (I'm not concerned about performance, for I will use it for small projects only.)
raegis··on UC Berkeley indefinitely suspends international student work authorizations
Concerning [5], the article says he was rejected at UC Santa Barbara. Haven't checked in a while, but I believe UCSB historically accepts 40-50% of first time applicants. The schools were not using SAT scores at the time, and UC has banned race considerations in admissions for nearly 30 years. Surely there's more to this story.
raegis··on CEO fired developers to make room for AI. Developers create open source AI CEO
Attorneys commonly do this.
raegis··on Apple introduces M6 and M5 Ultra
I bought a motherboard from Newegg in late 2024. It came with 16GB of RAM as a free "gift". The same RAM goes for $534 on Newegg today. It was $437 in January. Prices are still creeping up for this "throwaway" memory.

I still have it, but never installed it because I only use ECC memory in my desktops. I'm saving it for a future Desktop in case memory prices never fall again.

raegis··on Why some US restaurants are banning tips
> As a foreigner in the US, I've made the faux-pas of assuming waiters and waitresses were being paid a full salary by their employer.

This depends on the state. For example, in California, servers get state minimum wage, at least ($16.90/hour). On the other hand, most "red" states use the federal minimums: $2.13/hour for servers (!) and $7.25/hour for non-tipped employees.

raegis··on Why some US restaurants are banning tips
> The biggest barrier to ending tipping in the USA is that restaurants are almost always over staffed there.

Are you sure? I've seen way more staff shortages in real life restaurants over the past 5-6 years than any other time in my life.

raegis··on Ask HN: Coding is a solved problem. What is left for experienced engineers?
Storage and memory prices are so outrageous that I'm "discovering" multiple old hard drives in my basement that I will be using for backups soon. I'm lucky that my son asked for a "gaming" machine for Christmas in 2024, so now we have a spare desktop with a 9800X3D and 64GB of ECC RAM which I'm hoping will last forever.

And this is a problem which we all share. Because prices are so outrageous, we have to do heavy computations with limited memory and storage while maintaining privacy. So there's a lot to do here with software, including creating easy to use and verify privacy-enforcing computing environments for specific purposes, and writing computational software which is more efficient so that we are not beholden to "cloud providers". Talk to folks in offices unrelated to tech. There is a lot of stuff you can be doing for them.

raegis··on How Universities Should Prepare Founders
College is the last and only place most kids (United States) will ever be academically challenged. It would be scary to live in a world where this is not available.
raegis··on Simplifying and Refactoring Introductory Calculus (2018)
Manfredo P. do Carmo: Differential Forms and Applications. Short and incredibly beautiful.
raegis··on Everyone Should Know SIMD
What are AoS and SoA?
raegis··on New AI tutor achieves 0.71-1.30 SD effect size in Dartmouth course [pdf]
In the Matrix movies you can upload complex knowledge to a person in seconds. If LLMs could help with this even a little it would be useful. But alas, people like myself who are slow learners still get overwhelmed when trying to learn too much or too fast without rest breaks.
raegis··on Renting a sewing machine from the library
Libraries have been renting non-books for a long time. Different communities have different needs. It's not a big deal. Some libraries in the Los Angeles area lend sewing machines, bike tools, and other useful stuff. The main branch library has 3d printers and other tech stuff ordinary folks can't afford. And of course, they have various workshops on numerous topics for adults and children.

Given all the stuff I've taken advantage of, if the libraries here were only for borrowing books, they would seem kind of useless. And this is from someone who has the max 30 books checked out right now.

raegis··on U.S. science is in chaos
That narrows it down to about 50 countries :)
raegis··on Wolfram Language and Mathematica version 15
I used Mathematica on a NeXT computer back in 1991. It was a beautiful machine to work on. I did a student project where I simulated the flow of the boundary of a plane region over time (like how the shape of a drop of oil in water changes over time) and it was very, very easy to write in Mathematica with cool graphics.
raegis··on Wolfram Language and Mathematica Version 15, AI Assistant, Symbolic Music, More
> "...the level of pattern matching you can use when defining functions, as well as the high level of functional composition..."

This sounds like your average functional programming language. The Scicloj community is the first thing to come to mind (but I assume they don't do symbolic algebra/calculus like Mathematica does), but I don't know what you're specifically missing.

raegis··on Linux 7.1
Actually, I'm running the backports kernel which is at 7.0 today.

  $ uname --kernel-release 
  7.0.10+deb13-amd64
If you run stable, Debian backports takes care of a lot of the popular stuff. Kernels, kernel modules, Rust/Cargo, CMake, Clangd, GPU firmware (AMD/Intel), GDB, LibreOffice, OpenShot video editor, and Wireguard are all kept current in backports. And there's way more than I mention here, of course. Worst case I can install unstable in a schroot and run some bleeding-egde software.

I did all of my distro hopping when I was young, 20+ years ago. I settled on Debian because life got busy and I had no time to fuss with broken software updates.

raegis··on Why are so many young people getting cancer?
One study (sorry, can't recall the source off the top of my head) claimed 20% of calories in the average U.S. diet was replaced by processed foods over that period. I'm over 50 years old, and it agrees with my own observations. Those "big gulp" beverages became popular in the 80s, and "low fat" foods just replaced fat with added sugar.

One example: long ago I used to buy Bush's baked beans in a can. They had a vegetarian version which I assumed was healthier, and it even tasted better than the original. But one day I compared the labels and found the vegetarian version had more added sugar and more calories per serving.

We were fed a massive amount of misinformation about healthy foods in the 1980s. Hopefully things will improve from now on.

raegis··on Honda is killing its EVs
New Honda Accord hybrids do not include a spare tire. The manufacturers copied the idiocy.
raegis··on Big Data on the Cheapest MacBook
Can you say a little more about what you mean by "better"? How much faster is editing?
raegis··on AI is making junior devs useless
"juniors are useless": Maybe y'all should consider updating this hyberbolic language. Nobody is born a "senior developer", so surely all of your training as a "junior" is not useless. There is always a disconnect between what younger people know and what older people expect them to know, so training is required almost universally.
raegis··on Six Math Essentials
The one math majors joke about is Serra’s A Course in Arithmetic, which is definitely not for young children.
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