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HN Buddy Daily Digest

Saturday, September 20, 2025

Hey buddy, what's up? Just catching up on Hacker News from Saturday, man, some wild stuff. Lemme hit you with the highlights real quick.

Ultrasonic Chef's Knife

First up, there's this crazy ultrasonic chef's knife. Like, it vibrates super fast to cut stuff. People were all over it, some saying it's a gimmick, others are like 'new tech always starts weird.' One dude even said he finds sharpening his knives on whetstones 'meditative' – seriously, who knew?

Disney+ Cancellation Page Crashes

Then, get this, the Disney+ cancellation page crashed! Apparently, a bunch of people tried to quit after that whole Jimmy Kimmel thing. Sounds like a mess, and folks were debating free speech and execs caving to pressure. Wild to think a cancellation page can't handle the load, right?

Microsoft's H-1B Visa Warning

Big tech news too: Microsoft told H-1B visa employees to come back to the US ASAP. Looks like visa fees are going way up, like $100,000 a year or something insane. Total scramble for a lot of people, and the comments were a heated debate about immigration and politics. Another related article mentioned these H1Bs will start costing a hundred grand a year, so yeah, definitely a hot topic.

Git Introducing Rust

And for the dev nerds, Git is making Rust mandatory in its build system. Yeah, you heard that right. People are talking about Rust's borrow checker, static analysis, and if it's a good move for Git's future. It's a pretty big shift for such a core tool.

$2 USB Information Display

On the lighter side, there's this super cool, super cheap $2 USB display. It's tiny, like 0.96 inches, just plugs into your computer to show info. But of course, everyone in the comments immediately went to 'what if it's a malicious keylogger?' Classic HN paranoia, haha. But seriously, for two bucks, that's pretty neat.

Are Touchscreens in Cars Dangerous?

Finally, a good old debate: Are touchscreens in cars dangerous? The article and comments were full of people saying 'bring back physical buttons!' Some shared how Mazda does it right with screens higher up and a scroll wheel, not just touch. Makes sense, right? Who wants to be fumbling with a screen while driving?

Anyway, that's the gist of it for Saturday. Wild stuff, as usual. Talk soon!

All Stories from Today

Ultrasonic Chef's Knife (seattleultrasonics.com)

Disney+ cancellation page crashes as customers rush to quit (creators.yahoo.com)

Microsoft has urged its employees on H-1B and H-4 visas to return immediately (timesofindia.indiatimes.com)

Git: Introduce Rust and announce it will become mandatory in the build system (lore.kernel.org)

$2 WeAct Display FS adds a 0.96-inch USB information display to your computer (www.cnx-software.com)

FLX1s phone is launched (furilabs.com)

Designing NotebookLM (jasonspielman.com)

Are touchscreens in cars dangerous? (www.economist.com)

Cormac McCarthy's tips on how to write a science paper (2019) [pdf] (gwern.net)

Britain jumps into bed with Palantir in £1.5B defense pact (www.theregister.com)

Trumpcard (Official US Government Website) (trumpcard.gov)

Images over DNS (dgl.cx)

IG Nobel Prize Winners 2025 (improbable.com)

H1Bs will start costing $100k/yr (www.boundless.com)

If you are good at code review, you will be good at using AI agents (www.seangoedecke.com)

PYREX vs. pyrex: What's the difference? (www.corning.com)

Is Zig's new writer unsafe? (www.openmymind.net)

The LLM Lobotomy? (learn.microsoft.com)

Microsoft memo advises H1B employees to return immediately if currently abroad (x.com)

Things managers do that leaders never would (simonsinek.com)

Vapor chamber tech keeps iPhone 17 Pro cool (spectrum.ieee.org)

Systemd can be a cause of restrictions on daemons (utcc.utoronto.ca)

Did you read the quarter-million-line license for your Slack app? (mastodon.mit.edu)

China's 200M gig workers are a warning for the world (www.economist.com)

Grok 4 Fast (x.ai)

Invasive Israeli-founded bloatware is harvesting data from Samsung users in WANA (smex.org)

Why do some gamers invert their controls? (www.theguardian.com)

For comedians around the world, the laughs often end as democracy fades (www.theguardian.com)

Living microbial cement supercapacitors with reactivatable energy storage (www.cell.com)

Parents outraged as Meta uses photos of schoolgirls in ads targeting man (www.theguardian.com)