The best of Hacker News - July 1, 2025

1.
The new skill in AI is not prompting, it's context engineering

493 points

2.
Xfinity using WiFi signals in your house to detect motion

491 points

3.
There are no new ideas in AI only new datasets

361 points

4.
Proton joins suit against Apple for practices that harm developers and consumers

280 points

5.
I write type-safe generic data structures in C

253 points

6.
Donkey Kong Country 2 and Open Bus

210 points

7.
Melbourne man discovers extensive model train network underneath house

184 points

8.
Claude Code now supports Hooks

159 points

9.
The hidden JTAG in a Qualcomm/Snapdragon device’s USB port

139 points

10.
End of an Era

109 points

11.
YouTube No Translation

93 points

12.
The Email Startup Graveyard: Why 80%+ of Email Companies Fail

87 points

13.
People Keep Inventing Prolly Trees

79 points

14.
The original LZEXE (A.K.A. Kosinski) compressor source code has been released

76 points

15.
Rust CLIs with Clap

62 points

16.
GPEmu: A GPU emulator for rapid, low-cost deep learning prototyping [pdf]

33 points

17.
DeepSeek App Faces Ban in Germany for Illegal Transfer of User Data

20 points

18.
Genetic Code Enables Zebrafish to Mend Damaged Organs

12 points

19.
Nimtable: Open-source web UI to browse and manage Apache Iceberg tables

6 points

20.
Automatic build number incrementing in Xcode

3 points

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