6.20.26 | Hyundai acquires Boston Dynamics, Norway nearly bans AI in elementary schools, Project Valhalla brings a decade of work to JDK 28

This is a recap of the top 10 posts on Hacker News on Jun 20, 2026.

Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights

• (00:00) - Intro
• (00:19) - Hyundai buys Boston Dynamics
• (01:54) - Norway imposes near ban on AI in elementary school
• (03:16) - Project Valhalla, Explained: How a Decade of Work Arrives in JDK 28
• (04:41) - There are no instances in ATProto
• (06:11) - The AirPods Effect
• (08:15) - Bobby Prince, composer for Doom, Wolfenstein 3D, and Duke Nukem 3D, has died
• (09:12) - How many of the 170k English words do you know?
• (10:02) - Court Records Should Be Free
• (11:22) - Ten years of ClickHouse in open source
• (12:39) - Zen and the Art of Machine Learning Research
• (13:55) - Outro

Hyundai buys Boston Dynamics
https://startupfortune.com/hyundai-takes-full-control-of-boston-dynamics-as-softbank-exits-for-325-million/
https://news.ycombinator.com/item?id=48600312

Norway imposes near ban on AI in elementary school
https://www.reuters.com/technology/norway-imposes-near-ban-ai-elementary-school-2026-06-19/
https://news.ycombinator.com/item?id=48600093

Project Valhalla, Explained: How a Decade of Work Arrives in JDK 28
https://www.jvm-weekly.com/p/project-valhalla-explained-how-a
https://news.ycombinator.com/item?id=48595511

There are no instances in ATProto
https://overreacted.io/there-are-no-instances-in-atproto/
https://news.ycombinator.com/item?id=48599515

The AirPods Effect
https://www.theescapenewsletter.com/p/the-airpods-effect
https://news.ycombinator.com/item?id=48592832

Bobby Prince, composer for Doom, Wolfenstein 3D, and Duke Nukem 3D, has died
https://www.legacy.com/legacy/robert-bobby-prince-lll
https://news.ycombinator.com/item?id=48602352

How many of the 170k English words do you know?
https://vocabowl-870366514258.us-west1.run.app/
https://news.ycombinator.com/item?id=48598586

Court Records Should Be Free
https://www.eff.org/deeplinks/2026/06/court-records-should-be-free
https://news.ycombinator.com/item?id=48600946

Ten years of ClickHouse in open source
https://clickhouse.com/blog/open-source-10
https://news.ycombinator.com/item?id=48546890

Zen and the Art of Machine Learning Research
https://blog.jxmo.io/p/zen-and-the-art-of-machine-learning
https://news.ycombinator.com/item?id=48549118