Hacker News on Monday, 21 July 2025

Stories posted this day, by points. Rank history starts with the October 2026 rebuild.

Screenshot of github.com: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale

TrackWeight: Turn your MacBook's trackpad into a digital weighing scale (github.com)

586 points by wtcactus 1 year ago | 141 comments

GitHub repository for TrackWeight, a macOS app that uses a MacBook's Force Touch trackpad as a digital weighing scale.

macbook trackpad force-touch macos

Screenshot of arstechnica.com: UK backing down on Apple encryption backdoor after pressure from US

UK backing down on Apple encryption backdoor after pressure from US (arstechnica.com)

520 points by azalemeth 1 year ago | 369 comments

Ars Technica article (via Financial Times) reporting that the UK is backing down on demanding an Apple encryption backdoor after US pressure over tech deals.

encryption-backdoor apple uk-government advanced-data-protection

Screenshot of accounting.penrose.com: AccountingBench: Evaluating LLMs on real long-horizon business tasks

AccountingBench: Evaluating LLMs on real long-horizon business tasks (accounting.penrose.com)

505 points by rickcarlino 1 year ago | 140 comments

Penrose's AccountingBench page presents a benchmark of LLM agents closing a company's books over months, shown through a simulated accounting reconciliation interface.

llm-benchmarks ai-agents accounting long-horizon-tasks

Screenshot of lumafield.com: What went wrong inside recalled Anker PowerCore 10000 power banks?

What went wrong inside recalled Anker PowerCore 10000 power banks?(lumafield.com)

476 points by walterbell 1 year ago | 246 comments

Lumafield article using industrial CT scans to examine defects inside recalled Anker PowerCore 10000 power banks.

anker power-banks lithium-ion-batteries ct-scanning

Screenshot of deepmind.google: Gemini with Deep Think achieves gold-medal standard at the IMO

Gemini with Deep Think achieves gold-medal standard at the IMO (deepmind.google)

474 points by meetpateltech 1 year ago | 213 comments

Google DeepMind blog post announcing that an advanced Gemini model with Deep Think officially achieved gold-medal standard at the 2025 International Mathematical Olympiad.

gemini deep-think google-deepmind imo

Screenshot of docs.astral.sh: Uv: Running a script with dependencies

Uv: Running a script with dependencies (docs.astral.sh)

464 points by Bluestein 1 year ago | 135 comments

Astral's uv documentation guide section on running Python scripts that declare their own dependencies.

uv python astral dependency-management

Screenshot of vidarholen.net: I wasted weeks hand optimizing assembly because I benchmarked on random data

I wasted weeks hand optimizing assembly because I benchmarked on random data (vidarholen.net)

376 points by thunderbong 1 year ago | 148 comments

Blog post recounting how the author spent weeks hand-optimizing assembly for a Java platform, only to find the gains came from benchmarking on unrealistic random data.

assembly java benchmarking performance-optimization

Screenshot of maddie.wtf: Jujutsu for busy devs

Jujutsu for busy devs (maddie.wtf)

327 points by Bogdanp 1 year ago | 452 comments

A blog post guide introducing the Jujutsu (jj) version control system for busy developers, covering setup, revisions, changes, bookmarks, and conflicts.

jujutsu jj version-control git

Screenshot of morphik.ai: Don't bother parsing: Just use images for RAG

If writing is thinking then what happens if AI is doing the writing and reading?(hardcoresoftware.learningbyshipping.com)

101 points by whobre 1 year ago | 86 comments

Screenshot of github.com: How to handle people dismissing io_uring as insecure? (2024)