DTF:HN for July 13, 2026

Your Daily Tech Feed covering the top 10 stories on Hacker News for July 13, 2026. Featuring: Zig Creator Calls Spade a Spade, Anthropic Blows Smoke, Interrail: 6,379Km and 13 Countries over 7 weeks, The social physics of conversation: Communication patterns matter, GhostLock, a stack-UAF that has existed in all Linux distributions for 15 years, Beavis Ultrasound PnP ISA Sound Card Replica, and more. Stories covered: 1. Zig Creator Calls Spade a Spade, Anthropic Blows Smoke https://raymyers.org/post/zed-creator-calls-spade-a-spade/ HN discussion: https://news.ycombinator.com/item?id=48889637 2. Interrail: 6,379Km and 13 Countries over 7 weeks https://shkspr.mobi/blog/2026/07/another-ridiculous-interrail-holiday-6379km-and-13-countries-over-7-weeks/ HN discussion: https://news.ycombinator.com/item?id=48889350 3. The social physics of conversation: Communication patterns matter https://andiroberts.com/citizenship/the-social-physics-of-conversation-citizenship-leadership HN discussion: https://news.ycombinator.com/item?id=48828576 4. GhostLock, a stack-UAF that has existed in all Linux distributions for 15 years https://nebusec.ai/research/ionstack-part-2/ HN discussion: https://news.ycombinator.com/item?id=48834309 5. Beavis Ultrasound PnP ISA Sound Card Replica https://github.com/schlae/BeavisUltrasound HN discussion: https://news.ycombinator.com/item?id=48888193 6. The Graph That Should Be Front-Page News https://www.lyrebirddreaming.com/post/the-graph-that-should-be-front-page-news HN discussion: https://news.ycombinator.com/item?id=48888331 7. Cyberpunk Comics, Manga and Graphic Novels https://shellzine.net/cyberpunk-comics/ HN discussion: https://news.ycombinator.com/item?id=48885643 8. Tiny Emulators https://floooh.github.io/tiny8bit-preview/index.html HN discussion: https://news.ycombinator.com/item?id=48884395 9. Backtrack-Free Cursive https://mmapped.blog/posts/52-backtrack-free-cursive HN discussion: https://news.ycombinator.com/item?id=48888518 10. So you want to learn physics (second edition, 2021) https://www.susanrigetti.com/physics HN discussion: https://news.ycombinator.com/item?id=48827126