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jere

5,335 karma · joined June 5, 2012

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jere··on Codex Security
I think his point was AI is really good at introducing vulnerabilities?
jere··on Advertise in ChatGPT
Why?
jere··on Decoy Font
It's similar to any anti face detection art. Probably useless but cool.
jere··on Strata – An app that talks me out of dying outdoors
It's perfectly safe, I assure you.
jere··on Claude Tag
It feels like they release 1 or 2 "products" a week and then we never hear about them again.
jere··on 15-minute at-home Lyme disease tick test
You do get more sensitive to bad lifestyle habits in your 30s, but none of those are normal symptoms attributable to "aging" in your 30s. Really weird when people around this age act like they're just on death's doorstop.
jere··on 15-minute at-home Lyme disease tick test
I've had a reckoning with my caffeine metabolism recently. I fall asleep very easily, like head hits pillow and I'm zonked within a minute. But I often wake up at 3 or 4am and am unable to go back asleep.

What I've learned is that caffeine metabolism goes down with age and sleep gets lighter with age. Even if you can fall asleep easily, the residual caffeine in the middle of the night is enough to wake you out of light sleep. I made a tool to convince myself to cut back: http://jitterdone.com

jere··on Voxel Space (2017)
I still think this is a weird framing overall, but yes I see your quoted line "a height map is" was applying to this article and not generally.
jere··on Voxel Space (2017)
> A height map is representing voxel data without overhangs.

A height map can represent voxel data if the columns are integer heights, in the same way an integer can "represent" an infinite number of countable things. It's like saying the number 7 is "related" to a group of 7 ducks. The relationship is kind of meaningless.

But more importantly height maps can use also floating point heights in which case there's no reasonable mapping between the two. So your statement isn't generally true.

jere··on Voxel Space (2017)
This is a vague statement. Are you suggesting each column can can have multiple layers of terrain, air, terrain? IIUC, the article disputes this:

> Such maps limit the terrain to “one height per position on the map” - Complex geometries such as buildings or trees are not possible to represent.

FWIW I'm working on a voxel sandcastle game. People usually seem particularly surprised by this style because they're so used to such games being rendered by height maps which don't allow tunnels or arches or overhangs.

jere··on YouTube to automatically label AI-generated videos
It's pretty common. I would assume any faceless channel is all AI now. Like I saw these fitness videos and I thought the voice was a little too good for AI, especially a year ago. But apparently the TTS models are really good. https://youtube.com/@yellowdude_co
jere··on Claude Opus 4.8
"it's smarter than me?"

You don't have to correct it dozens of times a day!? Really?

jere··on 560-610 minutes of exercise a week needed for substantial heart benefits
I don't think those count as "moderate to vigorous" exercise, at least for most of the time you're doing any of them.
jere··on Frontier AI has broken the open CTF format
Classic of course. The point being: don't make fun of people for not knowing something. In this thread we're making fun of learned helplessness.
jere··on Frontier AI has broken the open CTF format
It's kind of amusing that you're asking for acronyms you don't know not to be used and acronyms you do know to not be spelled out.
jere··on Frontier AI has broken the open CTF format
Is 30 years old very new? We're on a site for tech people. I would wager most are familiar with this term.
jere··on GPT-5.5 Price Increase: What It Costs
I don't disagree. It's just a weird way to describe them currently when they just announced massively increasing limits.
jere··on GPT-5.5 Price Increase: What It Costs
You mean the company that just doubled their rate limits? https://www.anthropic.com/news/higher-limits-spacex
jere··on Talking to strangers at the gym
> Pretended I didn’t know a childhood friend when they said hi because I didn’t know how to act around people I used to know

In high school because people thought I was a snob or something because of my social awkwardness. I love talking to people but absolutely hate initiating conversations. I love looking people in the eye when they're talking and hate looking at people as a I pass, so I usually don't even know who is walking near me. It's kind of crippling (and this is after it's gotten much better over time).

jere··on Using “underdrawings” for accurate text and numbers
Very impressive, simple, and reliable. I'm sure it will be picked up by image generation labs soon.
jere··on What did you love about VB6?
Nostalgia, not an answer: my proudest moment from high school was coding a very primitive raycasting "engine" in VB6 (that's what we had in our programming class). I had no idea what I was doing and I used some sort of layout object to draw vertical columns.
jere··on Our eighth generation TPUs: two chips for the agentic era
Username checks out
jere··on Show HN: Jitter Done – a simple tool to understand your caffeine metabolism
Totally. Stopping at a specific time is a good rule of thumb, but you can obviously compensate for one half life by just consuming twice as much at the start.

And the surprising thing too for me: how low the threshold is where it can impact your sleep.

jere··on Show HN: I built a tool that reads 2000 health studies a day so you dont have to
Neat idea. Who is the audience? How often do you think a piece of evidence comes across, significant and noteworthy enough, for the average person? Is that happening daily or close to it?
jere··on Show HN: Jitter Done – a simple tool to understand your caffeine metabolism
I've been struggling with poor sleep for months. The 3am wake ups (can't fall back asleep) are really bad.

I figured it couldn't be coffee because I fall asleep easily. But it turns out that lingering caffeine can let you fall asleep at bedtime and then come back to haunt you later when you move into lighter sleep.

I've been in denial about my caffeine consumption because I've gotten away with it until now.

I vibe coded a little caffeine metabolism tool to face reality. I wanted something with a simple half-life formula and drag and drop using common beverages.

What becomes clear very quickly is: my caffeine consumption needs to be way lower and earlier to fix my sleep issues.

jere··on Ask HN: What tech job would let me get away with the least real work possible?
Government jobs. But my experience tells me that getting away with doing nothing is very corrosive to the soul and will be regretted later.
jere··on OpenAI claims gold-medal performance at IMO 2025
You could look at 16% as roughly equivalent to a dice roll (1 in 6) or, you know, the odds you lose a round of Russian roulette. That's my charitable interpretation at least. Otherwise it does sound silly.
jere··on The time bomb in the tax code that's fueling mass tech layoffs
There's a difference of $24 but I have $1200 in cash reserves. And I make up the difference later. Oh no! Guess I have to lay off 10% of my employees now.
jere··on The time bomb in the tax code that's fueling mass tech layoffs
I can see why it would affect startups not making a profit but why would it dramatically affect FAANG (e.g. some of the most profitable companies in the world that have been running for decades)? The article contributes all these large layoffs in FAANG, in part, to this tax rule.
jere··on Veo 3 and Imagen 4, and a new tool for filmmaking called Flow
There were smartphones before the iPhone. One could also describe the difference as "just a touchscreen".
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