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jcims

15,741 karma · joined March 6, 2014

jcims at crandal.org
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jcims··on Sizing chaos
It's a great point that I think the article also touches on. Bodies are of many shapes, so the sizing question is as much about, possibly more about, shape as it is mapping any particular dimension to a scale.
jcims··on Sizing chaos
I wonder if understanding a particular brand's sizing drives up repeat purchases.
jcims··on Claude Sonnet 4.6
One very specific and limited example, when asked to build something 4.6 seems to do more web searches in the domain to gather latest best practices for various components/features before planning/implementing.
jcims··on Improving 15 LLMs at Coding in One Afternoon. Only the Harness Changed
I ran into this from the other direction. I built a small SRE agent for my cloud infra and just kind of walked into hand-rolling some of the tools rather than using what exists today. I provided an edit_file tool that felt like it was of reasonable capability, but in practice the agent was regularly 'trying' to do a one line change and submitting PRs that hallucinated 3/4s of the file.

Seeing how bad the results are when you're casually approaching something makes it very evident that it's a topic that can be optimized.

jcims··on The Singularity will occur on a Tuesday
Is there a term for the tech spaghettification that happens when people closer to the origin of these advances (likely in terms of access/adoption) start to break away from the culture at large because they are living in a qualitatively different world than the unwashed masses? Where the little sparkles of insanity we can observe from a distance today are less induced psychosis and actually represent their lived reality?
jcims··on AI doesn’t reduce work, it intensifies it
>With agentic development, I have an idea, waste a few hours chasing it, then switch to other work, often abandoning the thing entirely.

How much of this is because you don't trust the result?

I've found this same pattern in myself, and I think the lack of faith that the output is worth asking others to believe in is why it's a throwaway for me. Just yesterday someone mentioned a project underway in a meeting that I had ostensibly solved six months ago, but I didn't even demo it because I didn't have any real confidence in it.

I do find that's changing for myself. I actually did demo something last week that I 'orchestrated into existence' with these tools. In part because the goal of the demo was to share a vision of a target state rather than the product itself. But also because I'm much more confident in the output. In part because the tools are better, but also because I've started to take a more active role in understanding how it works.

Even if the LLMs come to a standstill in their ability to generate code, I think the practice of software development with them will continue to mature to a point where many (including myself) will start to have more confidence in the products.

jcims··on xAI joins SpaceX
https://en.wikipedia.org/wiki/Lunar_resources

In situ manufacturing. You just have to send enough to build the thing that builds the factory.

jcims··on Stargaze: SpaceX's Space Situational Awareness System
Note from analysis in the paper: (CST = Commercial Star Tracker, for which they model several common ones flown on satellites)

>From Fig. 1, it is clear that many typical CSTs can be used to detect debris with characteristic length less than 10 cm at distances as far as roughly 50 km. These same sensors have the potential to detect debris as small as 1 cm in diameter as far as 5 km away. Even space-limited CubeSats using nanosatellite-class CSTs can detect 10-cm-class debris at roughly 25 km away or 1-cm-class debris at a distance of 2.5 km. Higher-performing imagers like the MOST telescope can further characterize orbital debris of 10 cm diameter as far as 400 km away or be used to characterize orbital debris smaller than 1 cm at ranges not exceeding 40 km.

jcims··on iPhone 16 Best-Selling Smartphone in 2025; Apple Takes 7 Spots in Top Models
To this day my S6 was the phone I was actually happiest with. Mostly just because of its durability, fit and feel (and the screen of course) rather than any particular tech spec.
jcims··on Benchmarking OpenTelemetry: Can AI trace your failed login?
I've been building an 'sre agent' with LangGraph for the past couple of weeks and honestly I've been incredibly impressed with the ability for frontier models, when properly equipped with useful tools and context, to quickly diagnose issues and suggest reasonable steps to remediate. Primary tooling for me is access to source code, cicd environment and infrastructure control plane. Some cues in the context to inform basic conventions really helps.

Even when it's not particularly effective, the additional information provided tends to be quite useful.

jcims··on I overengineered a spinning top [video]
Saw this last week, really enjoyed the tenacity in problem-solving!!

Did make me wonder if you could build a solid state one using well-timed pulses through an electromagnet that provide torque through the field interaction with the earth's magnetic field.

Not much torque available there obviously, but on a per-revolution basis you don't need much.

jcims··on Gas Town's agent patterns, design bottlenecks, and vibecoding at scale
>The world still needs real engineers to make real software that is suitable for the needs of many, and this doesn't replace that.

I think azan_ is demonstrating that shipping products 'suitable for the needs of many' is going to have to compete with 'slopping software for the needs of one'.

jcims··on Why I don't have fun with Claude Code
There's one interesting phenomenon that I noticed in myself and others with generating music with AI. You develop this kind of outsized emotional connection with it, even though your contribution to the 'work' was minimal, the fact that you saw this (arguably not) new 'thing' come into being creates an atypical bond. Not that it's 'mine' but that it's this beautiful thing.

So you (or in this case I) get all excited about how fantastic it is, but others that hear it are just kind of 'meh'. The only way I know this is listing to songs shared in that same exuberance by others, and to me they are 'meh'.

I shared this sentiment with some folks and one person said 'yeah, you should try writing your own music sometime...same thing happens' xD

jcims··on Why does SSH send 100 packets per keystroke?
I'm working on a little SRE agent to pre-load tickets with information to help our on-call and I'm already tired of Claude finding 'smoking guns'.
jcims··on We will ban you and ridicule you in public if you waste our time on crap reports
Holy cow, what a mess - https://github.com/expressjs/express/pull/6956
jcims··on We will ban you and ridicule you in public if you waste our time on crap reports
Classic perverse incentive.

From https://en.wikipedia.org/wiki/Perverse_incentive

"According to the story, the British government, concerned about the number of venomous cobras in Delhi, offered a bounty for every dead cobra. Initially, this was a successful strategy; large numbers of snakes were killed for the reward. Eventually, however, people began to breed cobras for the income. When the government became aware of this, the reward program was scrapped, and the cobra breeders set their snakes free, leading to an overall increase in the wild cobra population."

jcims··on We will ban you and ridicule you in public if you waste our time on crap reports
I thought about it when I posted but it felt like an invitation to dunk on the cultures involved. In one case it was a communication pattern that I found to be very unprofessional by an entire team, the other was nearly instant and *intense* conflict between a former direct of mine and their new manager that I got sucked into the middle of.
jcims··on We will ban you and ridicule you in public if you waste our time on crap reports
As a gent with some years under his belt, I have to humbly admit that it was quite late in my career before I realized how much culture influences how people operate. Two separate incidents with two different cultural contexts brought it to the fore about ten years ago. I sought some advice from a senior exec that I was close with and he just laid it out in very unflinching way. It was just one conversation but it has helped me tremendously in the years since.
jcims··on OpenAI API Logs: Unpatched data exfiltration
Agreed. The writeup could use a little Alice, Bob and Charlie treatment to make that more clear though.

The OSINT data seems to be the most likely source of the poisoned content. I guess you could bury that in a social media profile?

jcims··on Level S4 solar radiation event
Not to be a buzzkill but I think those are planes. The stars show trails so these must be long exposures, and trails of similar length appear to be going in all different directions, eg: https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/1820
jcims··on Porsche sold more electrified cars in Europe in 2025 than pure gas-powered cars
I grew up by the assembly plants in Ohio and worked there on various temp jobs in the late 80s/early 90s. There was (maybe still is) a lot of local pride in the product that comes out of those plants, the amount of energy that was put into quality control was boggling to my young mind. This included the motorcycle plant, where I had a few jobs correcting supplier parts that were just a smidge out of spec before bolting them on to the ATVs they were cranking out at the time.

Made me realize quality is a process that requires investment and commitment, and not some magic quality imbued upon the product by the locale in which it's made.

jcims··on American importers and consumers bear the cost of 2025 tariffs: analysis
Same.

tgtweak has a good one in here.

jcims··on American importers and consumers bear the cost of 2025 tariffs: analysis
There's been this phrase 'passing costs off to the consumer' that I've heard since I was a kid, used as some kind of indictment against companies raising prices when their costs go up.

Even as a kid I was confused. Where else is the money going to come from?

jcims··on A decentralized peer-to-peer messaging application that operates over Bluetooth
I've wanted something like this numerous times for long flights.

I also have recently got into caving, which usually results in 5-50 people camping over weekends in rural Kentucky. No signal most of the time.

jcims··on Gas Town Decoded
This is the best take I've seen in here.

I've been tinkering with it for the past two days. It's a very real system for coordinating work between a plurality of humans and agents. Someone likened it to kubernetes in that it's a complex system that is going to necessitate a lot of invention and opinions, the fact that it *looks* like a meme is immaterial, and might be an effort to avoid people taking it too seriously.

Who knows where it ends up, but we will see more of this and whatever it is will have lessons learned from Gas Town in it.

jcims··on Cursor's latest “browser experiment” implied success without evidence
People that spend time poking holes in random vendor claims remind me of folks you see video of standing on the beach during a tsunami warning. Their eyes fixed on the horizon looking for a hundred foot wave, oblivious to the shore in front of them rapidly being gobbled up by the sea.
jcims··on America could have $4 lunch bowls like Japan but for zoning laws
Visited Japan for the first time in December. I stayed at Airbnb's in Tokyo and Kyoto.

There were no $4 lunch bowls nearby, but I didn't need that to appreciate that I could walk to six restaurants, two wine shops and three cafes in less than three minutes. It was wonderful.

jcims··on Test your square brackets
One way to find out!
jcims··on Test your square brackets
Yeah the days before journaling filesystems, a moment to consider your actions as fsck did its best to clean up the mess you made.
jcims··on Test your square brackets
I have it on a tshirt. Pretty sure most people think it's just an emotional rant in emoji form.
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