Hacker News Highlights

This is a recap of the top 10 posts on Hacker News on Feb 20, 2025.

When imperfect systems are good: Bluesky's lossy timelines
https://jazco.dev/2025/02/19/imperfection/
https://news.ycombinator.com/item?id=43105028

Broken legs and ankles heal better if you walk on them within weeks
https://www.scientificamerican.com/article/broken-legs-and-ankles-heal-better-if-you-walk-on-them-within-weeks/
https://news.ycombinator.com/item?id=43101383

Show HN: Mastra – Open-source JS agent framework, by the developers of Gatsby
https://github.com/mastra-ai/mastra
https://news.ycombinator.com/item?id=43103073

1972 Unix V2 "Beta" Resurrected
https://www.tuhs.org/pipermail/tuhs/2025-February/031420.html
https://news.ycombinator.com/item?id=43108091

Show HN: Subtrace – Wireshark for Docker Containers
https://github.com/subtrace/subtrace
https://news.ycombinator.com/item?id=43096477

A secret poker game you can play on the subway
https://experience.prfalken.dev/english/subway-poker/
https://news.ycombinator.com/item?id=43088124

Scented products cause indoor air pollution on par with car exhaust
https://newatlas.com/environment/indoor-air-pollution-scented-terpenes/
https://news.ycombinator.com/item?id=43109366

Magma: A foundation model for multimodal AI agents
https://microsoft.github.io/Magma/
https://news.ycombinator.com/item?id=43110265

Build your own SQLite in Rust, Part 5: Evaluating queries
https://blog.sylver.dev/build-your-own-sqlite-part-5-evaluating-queries
https://news.ycombinator.com/item?id=43108614

Relaxed Radix Balanced Trees (2024)
https://peter.horne-khan.com/relaxed-radix-balanced-trees/
https://news.ycombinator.com/item?id=43103604