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HN Buddy Daily Digest

Monday, June 30, 2025

Hey buddy, So, I was checking out Hacker News from Monday, June 30, 2025, and there were some pretty interesting things popping up.

AI Stuff: Context is King Now?

First off, there was this piece saying the big deal in AI isn't just knowing how to type in clever questions (prompting), but something they're calling "context engineering." It's more about setting up the AI environment and giving it the right background info *before* you even ask it something. The comments seemed to back this up, saying the newer AI models are built differently now, way more complex than the old text completers. Someone even chimed in comparing it to getting into F1 racing – it's not just driving, it's understanding the whole complex system.

Xfinity Using Your WiFi for Motion?

Okay, this one's kinda creepy. Apparently, Xfinity is using the WiFi signals *in your house* to detect motion. They even link to their own support page about it. Naturally, the comments section was a bit of a privacy freakout. One guy joked that the modems should come with a giant warning sticker saying it tracks you and shares data with cops. People were debating if laws could actually stop this or if companies would just find loopholes by calling the data something else.

Proton vs. Apple Lawsuit

Proton, like the email and VPN guys, is apparently joining a lawsuit against Apple. They're saying Apple's ways hurt developers and us users, probably talking about the App Store rules and the cut they take. Comments were all over the place – some people really hate Apple for their walled garden approach, while others were wondering if developers would actually ditch the App Store completely or just offer different prices on their own sites. Someone got pretty heated saying Apple walling off iMessage was the most evil thing any tech company ever did, which sparked some arguments.

Wild Find Under a House!

This was just a fun, weird story. Some dude in Melbourne bought a house and found a massive, super detailed model train setup built *underneath* the house! Like, tunnels and towns and everything. Comments were mostly just "wow" and "that's awesome" or making jokes. Someone mentioned it reminded them a bit of the crazy hoarder Collyer brothers story, but mostly people were just impressed by the hidden hobby.

LetsEncrypt Ending Expiration Emails

Remember how LetsEncrypt used to email you when your free website certificates were about to expire? Yeah, they stopped doing that. The article said it was too much work and infrastructure for them, basically saying those emails were just a workaround because people weren't automating their certificate renewals properly anyway. Comments mostly agreed it makes sense and that automating cert management is the right way to go. Someone pointed out that certificates are still a pain in general, but that's kinda because the web wasn't originally built to be super secure.

AI Hitting Entry-Level Jobs?

There was a story linking the drop in entry-level jobs – apparently down by a third – to things like ChatGPT. The idea is that AI tools can handle some of the basic tasks that junior folks used to do. Comments had a good back-and-forth. Some senior developers agreed that AI helps them do tasks they might have given to an entry-level person before. Others brought up bigger economic issues and how it compares to growth in places like China back in the day.

Apple Looking at Outside AI for Siri?

Heard Bloomberg reported that Apple is thinking about using AI from companies like Anthropic (that make Claude) or OpenAI (that make ChatGPT) to power Siri instead of just using their own tech. Comments were pretty quick to point out how limited Siri is right now – good for simple stuff like timers but often fails on more complex commands. People were debating if they even *want* a full chatbot on their phone or if they'd rather AI just make existing features smarter. Someone even shared some tips on how to get Siri to work better for specific contact-based tasks.

Customer Service Calls Dropped on Purpose?

Finally, there was this article in The Atlantic suggesting that sometimes when your customer service call gets disconnected, it might be on purpose! Part of this whole "customer service sludge" thing where companies make it hard to get help. The comments were super relatable, with people venting about awful automated systems, companies that have no phone support at all, and how some countries actually have much better consumer protection laws that prevent this kind of stuff.

So yeah, pretty mixed bag today - some cool tech stuff, some privacy worries, a weird train story, and some relatable frustrations. Talk soon!

All Stories from Today

The new skill in AI is not prompting, it's context engineering (www.philschmid.de)

Xfinity using WiFi signals in your house to detect motion (www.xfinity.com)

There are no new ideas in AI only new datasets (blog.jxmo.io)

Gridfinity: The modular, open-source grid storage system (gridfinity.xyz)

Proton joins suit against Apple for practices that harm developers and consumers (proton.me)

I write type-safe generic data structures in C (danielchasehooper.com)

Show HN: TokenDagger – A tokenizer faster than OpenAI's Tiktoken (github.com)

Show HN: New Ensō – first public beta (untested.sonnet.io)

Donkey Kong Country 2 and Open Bus (jsgroth.dev)

Melbourne man discovers extensive model train network underneath house (www.sbs.com.au)

The provenance memory model for C (gustedt.wordpress.com)

Bought myself an Ampere Altra system (marcin.juszkiewicz.com.pl)

Ask HN: What's the 2025 stack for a self-hosted photo library with local AI? (news.ycombinator.com)

Want to meet people, try charging them for it? (notes.eatonphil.com)

LetsEncrypt – Expiration Notification Service Has Ended (letsencrypt.org)

The hidden JTAG in a Qualcomm/Snapdragon device’s USB port (www.linaro.org)

Datadog's $65M/year customer mystery solved (blog.pragmaticengineer.com)

End of an Era (www.erasmatazz.com)

Entry-level jobs down by a third since launch of ChatGPT (www.personneltoday.com)

The Chan-Zuckerbergs stopped funding social causes (www.washingtonpost.com)

Continuous Glucose Monitoring (www.imperialviolet.org)

Price of rice in Japan falls below ¥4k per 5kg (www.japantimes.co.jp)

Reverse Engineering Vercel's BotID (www.nullpt.rs)

Use keyword-only arguments in Python dataclasses (chipx86.blog)

Sony DTC-700 audio DAT player/recorder (kevinboone.me)

The original LZEXE (A.K.A. Kosinski) compressor source code has been released (clownacy.wordpress.com)

Apple weighs using Anthropic or OpenAI to power Siri (www.bloomberg.com)

That Dropped Call with Customer Service? It Was on Purpose (www.theatlantic.com)

The Academic Pipeline Stall: Why Industry Must Stand for Academia (www.sigops.org)

A CarFax for Used PCs; Hewlett Packard wants to give old laptops new life (spectrum.ieee.org)