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How the Heck Does JPEG Work?

https://perthirtysix.com/how-the-heck-does-jpeg-work
1•safehuss•9m ago•0 comments

Show HN: Check technical fit for B2B prospects without questionnaires

https://tryscoped.com/demo
1•ininew•12m ago•0 comments

Coldcard's $38M (so far) exploit shakes faith in self-custody

https://www.coindesk.com/business/2026/07/31/coldcard-s-usd38-million-so-far-exploit-shakes-faith...
3•wslh•19m ago•1 comments

If technology got better, why did everything get worse?

https://www.sammystraus.com/#if-technology-got-better-why-did-everything-get-worse
2•sammy0910•19m ago•1 comments

Book sellers raise alarm over 'horrific' destruction of rare titles to feed AI

https://www.theguardian.com/technology/2026/aug/02/australian-book-sellers-alarm-destruction-rare...
3•billybuckwheat•19m ago•1 comments

Using Meta AI via WhatsApp for OpenCode

https://github.com/amita-seal/wa-metaai
1•amita2•20m ago•0 comments

AI's real threat to jobs isn't job loss, it's lower paychecks, new research says

https://www.businessinsider.com/ai-could-lower-workers-pay-job-market-impact-2026-7
2•theanonymousone•26m ago•0 comments

Ask HN: How are you using AI to learn?

4•mfalcon•27m ago•1 comments

We're 15-year-olds tired of switching study apps, so we built our own

https://reviscio.com/
1•Luka_Takki•28m ago•1 comments

Retired man plants trees on forgotten land, now it's Sao Paulo's largest park

https://timesofindia.indiatimes.com/world/rest-of-world/in-2003-a-retired-man-planted-trees-on-fo...
3•rmason•29m ago•0 comments

YC founder asks desperate job seekers to tattoo themselves for an interview

https://sfstandard.com/2026/07/30/lemonlime-tattoo-job-interview/
3•theanonymousone•29m ago•0 comments

Show HN: A Google Reader like discovery engine for long-form blogs

https://boredreading.com/
1•khet•30m ago•0 comments

India's monsoon rains in danger as UN chief warns planet is 'on fire'

https://www.theguardian.com/environment/2026/jul/31/india-monsoon-el-nino-hot-dry-conditions-mete...
2•howard941•30m ago•0 comments

FDA panel supports broadening access to peptides popular on the gray market

https://www.npr.org/2026/07/23/nx-s1-5903202/fda-peptides-restrictions
1•gmays•32m ago•0 comments

Show HN: Lumaris – AI biotech intelligence briefs (sample: EGFR resistance)

https://lumaris.nanocorp.app/reports/egfr-resistance-nsclc-2026
1•lumaris_intel•34m ago•0 comments

Drifting SpaceX rocket heading for collision with Moon

https://www.theguardian.com/science/2026/jul/31/spacex-rocket-moon-collision
1•qprofyeh•36m ago•0 comments

Cosmic String

https://en.wikipedia.org/wiki/Cosmic_string
1•whythismatters•36m ago•0 comments

Show HN: I made a music player inspired by late 90s peer-to-peer sharing

https://jdanwire.jordanscales.com/
1•jordanscales•43m ago•0 comments

GPT‑5.6 fuses frontier intelligence with frontier efficiency

https://openai.com/index/gpt-5-6-frontier-intelligence-efficiency/
1•882542F3884314B•43m ago•0 comments

Seedance 2.5

https://seed.bytedance.com/en/blog/one-take-creation-flexible-referencing-introducing-seedance-2-5
2•njaremko•46m ago•0 comments

PaperOS: A native Linux E Ink OS running on BOOX hardware

https://www.reddit.com/r/Onyx_Boox/comments/1vcdkmh/paperos_a_native_linux_e_ink_os_now_running_on/
2•carlosjobim•46m ago•0 comments

Rescue Boat Crews Show Signs of Brain Injuries, but Coast Guard Isn't Looking

https://www.nytimes.com/2026/07/30/us/coast-guard-rescue-boat-surfmen-brain-injury.html
1•bookofjoe•50m ago•2 comments

Let's See Paul Allen's SIMD CSV Parser

http://chunkofcoal.com/posts/simd-csv/
1•mfiguiere•51m ago•0 comments

Soft-deprecating chrono and chrono-tz

https://github.com/chronotope/chrono/issues/1768
2•Paul-E•52m ago•0 comments

Diátaxis

https://diataxis.fr/
41•ryanseys•58m ago•7 comments

Show HN: Search Statistics Like an Absolute Psychopath

https://number.weyland.enterprises/?q=65535
1•hronecviktor•58m ago•0 comments

Ask HN: Best Blogging Platform?

3•asxndu•59m ago•3 comments

Pantograph

https://github.com/jeprinz/pantograph/blob/main/README.md
4•sargstuff•1h ago•0 comments

Uber SubmitQueue: a high-performance speculative merge queue

https://github.com/uber/submitqueue/
1•handfuloflight•1h ago•0 comments

Ads in Software Are Like Stickers on Laptops

https://daringfireball.net/2026/07/ads_in_software_are_like_stickers_on_laptops
2•naves•1h ago•2 comments
Open in hackernews

I asked Gemini for a script to move files to Cloudflare R2. It deleted them

https://twitter.com/levelsio/status/1921974501257912563
6•bundie•1y ago

Comments

qwertox•1y ago
Rule #1: Always put deletions behind a flag which is disabled for the first couple of test runs.
turtleyacht•1y ago
It was truncating filenames, so /pics/1003-46.png overwrote /pics/1003-45.png because both were renamed /pics/1003-.png, or something like that.
qwertox•1y ago
Truncating file names for the target. Then it proceeded to delete the source file. "Successfully deleted local file: ..."

I mean, look at the printout. It shows that it created the remote file with the truncated filename, then deletes the local file with the correct filename.

turtleyacht•1y ago
Oh, I see. Having a flag to skip deletion during test runs is a good rule then.
rvz•1y ago
Recently there was a story about an updater causing a $8,000 bill because there was a lack of basic automated tests to catch the issue. [0]

The big lesson here is that you should actually test the code you write and also write automated tests to check any code generated by an LLM that the code is correct in what it does.

It is also useless to ask another AI to check for mistakes created by another LLM. As you can see in the post, both of them failed to catch the issue.

This why I don't take this hype around 'vibe-coding' seriously since not only it isn't software engineering, it promotes low quality and carelessness over basic testing and dismisses in checking that the software / script works as expected.

Turning $70 problems found in development into $700,000+ costs in production.

There are no more excuses in not adding tests.

[0] https://news.ycombinator.com/item?id=43829006

victorbjorklund•1y ago
Who runs such an AI generated script without checking the code first?
qwertox•1y ago
To be fair, the code Gemini outputs in AI Studio is so extremely verbose that it is almost impossible to read through it.

It turns 10 lines of code which is perfectly fine to reason about into 100 lines of unreadable code full of comments and exception handling.

weatherlite•1y ago
Right so lets just always run the code as is ?
qwertox•1y ago
No. Not at all. I've settled to discussing my code with Gemini. That way it works very well. I explicitly say "Comment on my code and discuss it" or "Let's discuss code for a script doing this and that. Generate me an outline and let's see where this leads. Don't put comments in the code, nor exception handling, we're just discussing it".

Or you create elaborate System Instructions, since it adheres to them pretty well.

But out-of-the-box, Gemini's coding abilities are unusable due to the verbosity.

I've even gone so far to tell it that it must understand that I am just a human and have limited bandwidth in my brain, so it should write code which is easy to reason about, that this is more important than having it handle every possible exception or adding multiline comments.

rsynnott•1y ago
> To be fair, the code Gemini outputs in AI Studio is so extremely verbose that it is almost impossible to read through it.

In which case, it should simply be considered unusable. Like, the sensible response to "tool is so inadequate that there is no reasonable way to make sure its output is safe" is to _not use that tool_.

rsynnott•1y ago
In which Roko's Basilisk fires a warning shot.
jethronethro•1y ago
This is why you test code or a script before running it for real. Live and learn, I guess ...