top 50% hacker news stories for 2025-06-30

The new skill in AI is not prompting, it's context engineering

https://www.philschmid.de/context-engineering

1 year ago

Proton joins suit against Apple for practices that harm developers and consumers

https://proton.me/blog/apple-lawsuit

1 year ago

Xfinity using WiFi signals in your house to detect motion

https://www.xfinity.com/support/articles/wifi-motion

1 year ago

There are no new ideas in AI, only new datasets

https://blog.jxmo.io/p/there-are-no-new-ideas-in-ai-only

1 year ago

Gridfinity: The modular, open-source grid storage system

https://gridfinity.xyz/

1 year ago

I write type-safe generic data structures in C

https://danielchasehooper.com/posts/typechecked-generic-c-data-structures/

1 year ago

Melbourne man discovers extensive model train network underneath house

https://www.sbs.com.au/news/article/i-was-shocked-melbourne-mans-unbelievable-find-after-buying-house/m4sksfer8

1 year ago

That XOR Trick (2020)

https://florian.github.io//xor-trick/

1 year ago

Show HN: TokenDagger – A tokenizer faster than OpenAI's Tiktoken

https://github.com/M4THYOU/TokenDagger

1 year ago

★ 475 C++ MIT

Donkey Kong Country 2 and Open Bus

https://jsgroth.dev/blog/posts/dkc2-open-bus/

1 year ago

Show HN: New Ensō – first public beta

https://untested.sonnet.io/notes/new-enso-first-public-beta/

1 year ago

Show HN: A continuation of IRS Direct File that can be self-hosted

https://github.com/openfiletax/openfile

1 year ago

The hidden JTAG in a Qualcomm/Snapdragon device’s USB port

https://www.linaro.org/blog/hidden-jtag-qualcomm-snapdragon-usb/

1 year ago

Ask HN: What's the 2025 stack for a self-hosted photo library with local AI?

https://news.ycombinator.com/item?id=44426233

1 year ago

The provenance memory model for C

https://gustedt.wordpress.com/2025/06/30/the-provenance-memory-model-for-c/

1 year ago

End of an Era

https://www.erasmatazz.com/personal/self/end-of-an-era.html

1 year ago

Bought myself an Ampere Altra system

https://marcin.juszkiewicz.com.pl/2025/06/27/bought-myself-an-ampere-altra-system/

1 year ago

Want to meet people, try charging them for it?

https://notes.eatonphil.com/2025-06-28-want-to-meet-people-charge-them.html

1 year ago

Next month, saved passwords will no longer be in Microsoft’s Authenticator app

https://www.cnet.com/tech/microsoft-will-delete-your-passwords-in-one-month-do-this-asap/

1 year ago

LetsEncrypt – Expiration Notification Service Has Ended

https://letsencrypt.org/2025/06/26/expiration-notification-service-has-ended/

1 year ago

Alice's Adventures in a Differentiable Wonderland

https://arxiv.org/abs/2404.17625

1 year ago

Datadog's $65M/year customer mystery solved

https://blog.pragmaticengineer.com/datadog-65m-year-customer-mystery/

1 year ago

The story of Max, a real programmer

https://incoherency.co.uk/blog/stories/the-story-of-max.html

1 year ago

Price of rice in Japan falls below ¥4k per 5kg

https://www.japantimes.co.jp/news/2025/06/24/japan/japan-rice-price-falls-below-4000/

1 year ago

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

https://clownacy.wordpress.com/2025/05/24/the-original-lzexe-a-k-a-kosinski-compressor-source-code-has-been-released/

1 year ago

Entry-level jobs down by a third since launch of ChatGPT

https://www.personneltoday.com/hr/fall-in-entry-level-jobs-linked-to-rise-of-ai-tools/

1 year ago

Nano-engineered thermoelectrics enable scalable, compressor-free cooling

https://www.jhuapl.edu/news/news-releases/250521-apl-thermoelectrics-enable-compressor-free-cooling

1 year ago

Sony DTC-700 audio DAT player/recorder

https://kevinboone.me/dtc-700.html

1 year ago

Continuous Glucose Monitoring

https://www.imperialviolet.org/2025/06/29/cgm.html

1 year ago

Reverse Engineering Vercel's BotID

https://www.nullpt.rs/reversing-botid

1 year ago

The Chan-Zuckerbergs stopped funding social causes

https://www.washingtonpost.com/technology/2025/06/29/mark-zuckerberg-priscilla-chan-school-closure/

1 year ago

A CarFax for Used PCs; Hewlett Packard wants to give old laptops new life

https://spectrum.ieee.org/carmax-used-pcs

1 year ago

Killer whales groom each other with pieces of kelp

https://www.science.org/content/article/killer-whales-groom-each-other-pieces-kelp

1 year ago

Apple weighs using Anthropic or OpenAI to power Siri

https://www.bloomberg.com/news/articles/2025-06-30/apple-weighs-replacing-siri-s-ai-llms-with-anthropic-claude-or-openai-chatgpt

1 year ago

Use keyword-only arguments in Python dataclasses

https://chipx86.blog/2025/06/29/tip-use-keyword-only-arguments-in-python-dataclasses/

1 year ago

Developing with GitHub Copilot Agent Mode and MCP

https://austen.info/blog/github-copilot-agent-mcp/

1 year ago

That Dropped Call with Customer Service? It Was on Purpose

https://www.theatlantic.com/ideas/archive/2025/06/customer-service-sludge/683340/

1 year ago

How AI on Microcontrollers Works: Operators and Kernels

https://danielmangum.com/posts/ai-microcontrollers-operators-kernels/

1 year ago

GPEmu: A GPU emulator for rapid, low-cost deep learning prototyping [pdf]

https://vldb.org/pvldb/vol18/p1919-wang.pdf

1 year ago

Printegrated Circuits: Merging 3D Printing and Electronics

https://spectrum.ieee.org/3d-printing-smart-objects

1 year ago

Public Signal Backups Testing

https://community.signalusers.org/t/public-signal-backups-testing/69984

1 year ago

The Academic Pipeline Stall: Why Industry Must Stand for Academia

https://www.sigops.org/2025/the-academic-pipeline-stall-why-industry-must-stand-for-academia/

1 year ago

What Does a Post-Google Internet Look Like?

https://matduggan.com/what-does-a-post-google-internet-look-like/

1 year ago

Auth for B2B SaaS: it's not like auth for consumer software

https://tesseral.com/blog/b2b-auth-isnt-that-similar-to-b2c-auth

1 year ago

NativeJIT: A C++ expression –> x64 JIT (2018)

https://github.com/BitFunnel/NativeJIT

1 year ago

If AI Lets Us Do More in Less Time–Why Not Shorten the Workweek?

https://sfg.media/en/a/if-ai-lets-us-do-more-in-less-time/

1 year ago

The role of the University is to resist AI

https://www.danmcquillan.org/cpct_seminar.html

1 year ago

Cloud-forming isoprene and terpenes from crops may drastically improve climate

https://www.smithsonianmag.com/science-nature/scientists-are-just-beginning-to-understand-how-life-makes-clouds-and-their-discoveries-may-drastically-improve-climate-science-180986872/

1 year ago

React Still Feels Insane and No One Is Talking About It

https://mbrizic.com/blog/react-is-insane/

1 year ago

Manipulating trapped air bubbles in ice for message storage in cold regions

https://www.cell.com/cell-reports-physical-science/fulltext/S2666-3864(25)00221-8

1 year ago

Therapy dogs: stop crafting loopholes to fair, reasonable laws

https://dirtamericana.com/2025/04/therapy-dogs-business-interior-violations/

1 year ago

Show HN: We're two coffee nerds who built an AI app to track beans and recipes

https://beanbook.app

1 year ago

Importance of context management in AI NPCs

https://walterfreedom.com/post.html?id=ai-context-management

1 year ago

OpenTelemetry Is Great, but Who the Hell Is Going to Pay for It?

https://www.adatosystems.com/2025/02/10/who-the-hell-is-going-to-pay-for-this/

1 year ago

Ubuntu: Introducing Debcrafters

https://discourse.ubuntu.com/t/introducing-debcrafters/63674

1 year ago

Everyone Mark Zuckerberg has hired so far for Meta's 'superintelligence' team

https://www.wired.com/story/mark-zuckerberg-welcomes-superintelligence-team/

1 year ago

My home servers are not a homelab

https://blog.nradk.com/posts/homelab/

1 year ago

Brazil's Supreme Court clears way to hold social media liable for user content

https://apnews.com/article/brazil-supreme-court-social-media-ruling-324b9d79caa9f9e063da8a4993e382e1

1 year ago

Make Fun of Them

https://www.wheresyoured.at/make-fun-of-them/

1 year ago

LLM's Illusion of Alignment

https://www.systemicmisalignment.com/

1 year ago

Scribble-based forecasting and AI 2027

https://dynomight.net/scribbles/

1 year ago

Entropy of a Mixture

https://cgad.ski/blog/entropy-of-a-mixture.html

1 year ago

Jim Boddie codeveloped the first successful DSP at Bell Labs

https://spectrum.ieee.org/dsp-pioneer-jim-boddie

1 year ago

Meta Joins Kotlin Foundation

https://engineering.fb.com/2025/06/30/android/meta-joins-kotlin-foundation/

1 year ago

She Got a Permit for Her Chickens. Now the City Is Fining Her $80k

https://reason.com/2025/06/28/she-got-a-permit-for-her-chickens-now-the-city-is-fining-her-80000/

1 year ago

What Happens After A.I. Destroys College Writing?

https://www.newyorker.com/magazine/2025/07/07/the-end-of-the-english-paper

1 year ago

There's no such thing as a tree (phylogenetically) (2021)

https://eukaryotewritesblog.com/2021/05/02/theres-no-such-thing-as-a-tree/

1 year ago

Show HN: I rewrote my notepad calculator as a local-first app with CRDT syncing

https://numpad.io

1 year ago

What's the difference between named functions and arrow functions in JavaScript?

https://jrsinclair.com/articles/2025/whats-the-difference-between-named-functions-and-arrow-functions/

1 year ago