HNHacker News
TopNewBestAskShowJobs

jmpeax

483 karma · joined January 22, 2012

submissionscomments
jmpeax··on Insects don't swarm at LED lights
If P then Q, P therefore Q. Q is not the conclusion, it's just the consequent. If P is false, then Q could be true, but claiming Q is true because P is true when P is actually false is a wrong conclusion.
jmpeax··on Jeff – Jev-compatible 0.8B decision models, trained at home, ~30 ms
Then the probabilities are not calibrated. Jev is basically the LLM version of the "is-even" library.
jmpeax··on The safest job from AI may be writing
> A prompt complex enough where it won't get any wrong ideas has to contain as much information as the output would have.. so just write it.

This is only if the output is fully compressed. Writing is not just about encoding the writer's ideas but also about how the reader will ingest those ideas. The writer needs to consider when to put in rests in between complex ideas to help the reader flow through the text. This suggests the LLM could be prompted by a dense complex idea to be presented with the boilerplate needed for the human mind read smoothly and without unnecessary effort.

jmpeax··on Parallel development without the headaches using Git worktree
What a peculiar title. The title suggest parallel dev without using worktrees, but the article is about using worktrees.
jmpeax··on HTML Can Do That
> LLMs are also terrible at these new standards.

Skill issue? I mean, I wonder if adding a skill to use these newer standards can push it over the edge from the crappy JS it was trained on.

jmpeax··on US hires over 2k video gamers as air traffic controllers
The types of skills from FPS games and real fighting are much further apart than gaming and ATC. A closer analogy would be a coworker who knows Judo is needed for Greco-Roman wrestling. Very different sports with different rules, but the skills in building and navigating a mental map of the environment carry over.
jmpeax··on AI agent bankrupted their operator while trying to scan DN42
This whole fiasco could have been prevented had the operator included "Make no mistakes" in the prompt.
jmpeax··on Gemma 4 12B: A unified, encoder-free multimodal model
> nowhere in the announcement is coding mentioned

It's right there in the middle benchmark bar "LiveCode Bench" 72%.

jmpeax··on Learnings from 100K lines of Rust with AI (2025)
All unit tests can pass if you don't assert anything. Just have to make sure to read through all 130k lines of code to check.
jmpeax··on Write some software, give it away for free
This post misses that the people selling their "I built" SaaS advertised as a hobby/passion-project are just marketing something as indie that they fully intended to get rich from the beginning. It was never even a hobby worth giving away for free, it was always an attempt at making an easy fortune because they bought into the dream that infra was selling.
jmpeax··on State of the Windows: What is going on with Windows 11?
it's probably been thrown out the window compared to office and chatgpt
jmpeax··on How I estimate work
"If you refuse to estimate, you’re forcing someone less technical to estimate for you."

This is the perfect approach, given that estimates are top down and work to fill the estimate is bottom up.

"When I estimate, I extract the range my manager is looking for, and only then do I go through the code and figure out what can be done in that time."

jmpeax··on If you put Apple icons in reverse it looks like someone getting good at design
Future icon will just be this: ∠
jmpeax··on Spherical Snake
I like the surface dots like it is. It gives me two points of reference at the poles, and adds intuition for how long it takes to go around the sphere.
jmpeax··on Why does a least squares fit appear to have a bias when applied to simple data?
From that wikipedia article, delta is the ratio of y variance to x variance. If x variance is tiny compared to y variance (often the case in practice) then will we not get an ill-conditioned model due to the large delta?
jmpeax··on Your job is to deliver code you have proven to work
Actual architects design buildings.
jmpeax··on Your job is to deliver code you have proven to work
Don't get me started on "software architect".
jmpeax··on Is Mozilla trying hard to kill itself?
How is blocking ad blockers going to make them $150m?
jmpeax··on A linear-time alternative for Dimensionality Reduction and fast visualisation
> They typically need to compare many or all points to each other, leading to O(N²) complexity.

UMAP is not O(n^2) it is O(n log n).

jmpeax··on Python Data Science Handbook
Polars made the mistake of not maintaining row order for all operations, via the False-by-default argument of maintain_order. This is basically the billion-dollar null mistake for data frames.
jmpeax··on Every mathematician has only a few tricks (2020)
> always respect human dignity even when nasty players try to make a dirty move against you

What a gem of a quote. A great way to avoid becoming a bitter person.

jmpeax··on Major AI conference flooded with peer reviews written by AI
> does not provide any concrete proof, but it confirms many people's suspicions

Without proof there is no confirmation.

jmpeax··on 1M Downloads of Zorin OS 18
The pro version comes with "Professional-grade creative suite", but they don't tell you what you're actually getting. It's just opaque corporate-speak one-liners "Make real progress toward your goals".
jmpeax··on Solving a million-step LLM task with zero errors
Except on figure 1 they're all at 0, making it look like the authors didn't know how to use the models or deliberately made them do nothing.
jmpeax··on Google Antigravity
Google is still looking for investors?
jmpeax··on Things I don't like in configuration languages
Middle Aged Man Language - too many braces.
jmpeax··on £220 'for a cut-up sock' — Apples's new iPhone Pocket ridiculed online
That was released as a joke. Twenty years later and no longer released as a joke, Apple is showing they are still in touch with the sensibilities of the modern Apple customer.
jmpeax··on SanDisk launches dongle-like Extreme Fit USB-C flash drive with up to 1 TB
"up to 1 TB capacity... starting launch price is $15.99"

I have adblock, how did this SanDisk commercial make it through?

jmpeax··on High-performance 2D graphics rendering on the CPU using sparse strips [pdf]
Correctness with respect to the benchmark. A slow reference renderer could produce the target image, and renderers need to achieve either exact or close reproduction to the reference. Otherwise, you could just make substantial approximations and claim a performance victory.
jmpeax··on Visualize FastAPI endpoints with FastAPI-Voyager
There has to be a better way to view this than the tangled web of overlapping lines, like that at lower left of the "services" rectangle on the right, even with the selection highlighting. Perhaps there is not, and it is fertile ground for developing a new visualization.
Page 1 of 7Next →