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jfoutz

8,650 karma · joined August 15, 2007

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jfoutz··on Show HN: I built a 100% free startup idea generator
I kinda think you’re out of order. Market it. If that gets some traction, maybe it’s a good idea, and maybe try to execute.
jfoutz··on The IMEI Code: Your phone’s other number
Huh. That's a think I've had vague notions of, but you've made pretty explicit.

Technology under pressure looks a lot like biology.

jfoutz··on Cost of developing new drugs may be lower than industry claims: trial
We really did this wrong. We should get paid for every time the lines are run.
jfoutz··on You are what you read, even if you don't always remember it
You might want to get that checked out. Occasionally mis writing a memory is pretty normal. Constant deja vu is usually an indicator of bad stuff happening in your brain. Like busted hardware.
jfoutz··on A24's New AI-Generated 'Civil War' Ads Generate Controversy
The controversy is stills that don't appear in the movie. For example, Chicago burning, but Chicago isn't in the movie.

Doesn't seem to be about AI, so much as the changing face of movie marketing. kinda. if you squint hard.

jfoutz··on A tiny ultrabright laser that can melt steel
yes, but not permanently. You can certainly get dazzled by bright headlights, I can anyway.

but laser light, like staring into the sun, will destroy the delicate structure of your retina, and it doesn't grow back.

jfoutz··on Autonomous Overhead Powerline Recharging for Uninterrupted Drone Operations [video]
An alternative view, power companies point the finger at drones for outages or fires. Look the other way when people are stealing pennies. When the billion dollar bill comes in, hand it off to the police. Let them identify the operator, and put them on the hook for damages.
jfoutz··on What's the fastest language in the world?
I'd say less transmitting, and more preparation of the message.

"Please move" or "Get the fuck out of the goddamn way" both communicate the same information, one a bit more colorfully.

establishing and maintaining context, desired action and desired outcome take (well, me anyway) a substantial amount of time. Partly (for me) figuring out what the desired outcome actually is, and partly encoding that in a way that will be well received.

jfoutz··on Google Books Is Indexing AI-Generated Garbage
I think it’s a reference to the movie, being John malkovitch
jfoutz··on MOnSter 6502: a working transistor-scale replica of the classic MOS 6502
I learned this in Minecraft. I’d wired up ttls in college for intro to ee for cs majors, which was fun. But ram was a beast. I guess I’ll build another tower and upgrade to a full 1k.

Ram takes so much space.

jfoutz··on Low Cost Robot Arm
I don't know, but I think the big real industrial kind can really really hurt or kill people.

I think the limiter on smaller arms is quality servos with real location encoders - this one costs a couple hundred bucks for motors.

Not claiming the software is easy! But I think sourcing parts is (or has been) really hard.

jfoutz··on Tech Debt: My Rust Library Is Now a CDO
I think they make a joke out of the explanation. Iirc, Margot Robbie explains it, while taking a bath.
jfoutz··on Howard Hughes modified a 1925 Doble steam car to reach 133 MPH (2022)
oh! that's amazing!

I don't know much about steam engines, but more today, Thank you.

jfoutz··on 2K earthquakes in 1 day off Canada coast
Trying to get a sense of what's going on - and you seem knowledgeable. Is this thumbnail a reasonable approximation?

To my completely uninformed mind, it seems like you're saying, there's no huge plate to plate buildup of pressure, it's more like the ocean floor is spreading out, kinda like that picture?

https://www.earthquakescanada.nrcan.gc.ca/images/intro/wallA...

jfoutz··on Howard Hughes modified a 1925 Doble steam car to reach 133 MPH (2022)
I'm no expert, but I think it's fair to call a boiler failure an explosion. you're going to have a ton of steam pressure in a confined space. Not like a gasoline or dinamite explosion, but still a hell of a boom.

although maybe it did have a special emergency release valve that was sealed with a weaker metal or something so it couldn't get enough pressure to catastrophically fail.

I'm skeptical of this claim at face value "impossible for it to blow up" but people are smart. it's probably true in a bunch of contexts.

jfoutz··on Japanese Handsaws: The Maebiki Ooga
You tried longer than I did. maybe 2 years or so, probably less. I do really like my cheap double sided pull saw. I don't think I realized how much extra control I have with that longer handle, till I read some of the links that talk about different handle attachments.

I also found it quite humbling. But I take a little comfort in, that was their job, man. It's our hobby. I tell myself if I spent 10 years at that instead of poking at computers, I'd do a lot better. (That may not be true, but it's what I tell myself)

jfoutz··on Don't fuck with paste
seems like an unmaintained fork of the less provocative, https://github.com/jswanner/DontF-WithPaste
jfoutz··on The Law of Leaky Abstractions (2002)
I added 2 numbers and came up with 5. What numbers did I add?

You can’t know, because the abstraction (add) destroys information. A “good “ abstraction destroys information that doesn’t matter, or maybe matter in a given context.

You can hang on to all of that extra detail, but it seems like that extra detail slows down drawing inferences.

When I claimed adding resulted in 5, you probably didn’t care if it was 5 apples or 5 skyscrapers. The addition results of 5 are the important part.

Kinda hand waving, but what is included and what is left out is the heart of abstraction imho. And when it’s left out, you can’t get it back.

jfoutz··on SymPy: Symbolic Mathematics in Python
I think the windows linux analogy is pretty apt. especially around the win95/98 days.

Getting some random laptop and figuring out what kernel mods to enable and hope that the specific chipset revision was supported, or maybe a patch available that might work was, in fact, a lot of bullshit to put up with to get, say, sound.

sympy will do a lot. but you're probably going to have to reach for a big book of integrals, or find a friendly mathematician to identify the equation and possible approaches. Mathematica as a paid product has a lot of time and effort spent avoiding resorting to asking for help. Much much more built in.

As an undergrad or a hobbyist you probably want to stay "lower" and slog through the calculations when you're stuck. This is part of the process of understanding. But as a professional, or a more advanced user, screwing around for a week looking for a solution is a waste of time and expertise. Spring the cash, and move forward immediately.

I'm not trying to put words in your mouth, but I think there is some nuance that this maybe helps people understand your point.

"Better" really really depends on where you are and what you're trying to do.

jfoutz··on AI Determines Sex of Person from Brain Scans
AI research is old. There's an (apocryphal?) 30 year old tale about using computer vision to detect tanks.

All the photos of tanks had clouds in the sky. And few to none of the counter examples had clouds. So darpa paid for an expensive cloud detector.

Without more information about the study, I'm guessing there's a 'M' or 'F' stamped on the image somewhere.

_edit_ Ah - https://gwern.net/tank the tank story

jfoutz··on Mercury: Council and Parliament strike a deal to phase out mercury in the EU
I think the idea is, no attacking. Retaliation is fine.
jfoutz··on What Does "With Continuation" Mean? (2020)
I’m having trouble recalling, call cc just fixes the stack, right? If you mess with the heap, that sticks around?

The backtracking example is a good one. I vaguely remember needing to be careful about global state, or visible in a given context. It’s not awful, but a little tricky.

jfoutz··on DEF CON 32 Was Canceled. We Un-Canceled it
> Sometimes it's about politics. > Nevada has grown more and more corporate over the years.

You make it sound like it's entirely about money and the bottom line.

I have a hard time believing gaming doesn't provide _huge_ contributions to favorable politicians. I feel like you've got something to say, and maybe something really interesting. But what you've got if awfully vague.

If you've got the time or inclination, I'd definitely read an elaboration of your meaning.

jfoutz··on Ask HN: Guide for Implementing Common Lisp
I think bitwize's reply is one of the best comments I've read here. If you don't have the context it's really pretty condescending and snarky. but, hexdecoctbin thanked them for the reply.

based on your username, I'll absolutely stipulate that you're correct. bitwize didn't really answer the question correctly.

I'm not saying you're wrong. I'm saying bitwize said what OP needed to hear to grok the answer, and that seems pretty fucking lispy to me.

jfoutz··on Starlink's laser system is beaming 42 petabytes of data per day
I grew up in a rural area, on a moonless night, without a fire, as well as giving your vision some time to adjust to the darkness, you can see crazy amounts of stars along the Milky Way plane.

I would guess, reflected moonlight (moon over the horizon) would be enough to light up the dot well enough to see unaided.

jfoutz··on Google search drops cache link from search results
this makes me want to roll my own. But it's such a huge undertaking (maybe?).

I didn't realize it was a rebalancing. But seriously, I have no regrets. if nothing else, the incentive alignment matches my values better.

jfoutz··on Google search drops cache link from search results
Kagi is rad. I signed up about two months ago. yeah. I'm not comfortable using it at work, so I search on my personal phone. it works like google should (or did). It's hard to quantify. But yeah. Write your own engine (which isn't crazy) or pay someone to do it for you (my solution).

Yeah. it's worth a few bucks.

jfoutz··on 165 m private submersible superyacht
that might be it! same flavor at least.
jfoutz··on 165 m private submersible superyacht
I would swear there was a company in the late 90's that sold luxury submarines. Not submersible super-yachts. I thought it was the neatest thing till I realized you needed like 20 close friends to crew the thing. And far more dollars than I had. But that was like a real diesel electric that could dive to avoid storms and cruise fast on the surface. Definitely smaller than this.

Toys are neat. I dunno, if that's what you want, go for it. I sorta feel like you can do better.

jfoutz··on Enzyme breaks down single use plastic PLA quickly
I remember looking at these machines a while ago. Seems neat. I don’t have the waste volume to support the floor space.

Very cool project though.

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