Hacker News

Links for the intellectually curious, ranked by readers.

• Category Theory Illustrated – Orders
• Amiga Graphics
• Michael Rabin Has Died
• Claude Design
• Show HN: I made a calculator that works over disjoint sets of intervals
• Measuring Claude 4.7's tokenizer costs
• Towards trust in Emacs
• All 12 moonwalkers had "lunar hay fever" from dust smelling like gunpowder (2018)
• The simple geometry behind any road
• Spending 3 months coding by hand
• It's OK to compare floating-points for equality
• It is incorrect to "normalize" // in HTTP URL paths
• A simplified model of Fil-C
• Brunost: The Nynorsk Programming Language
• Are the costs of AI agents also rising exponentially? (2025)
• Rewriting Every Syscall in a Linux Binary at Load Time
• Show HN: Smol machines – subsecond coldstart, portable virtual machines
• "cat readme.txt" is not safe if you use iTerm2
• Slop Cop
• Show HN: PanicLock – Close your MacBook lid disable TouchID –> password unlock
• Show HN: Sfsym – Export Apple SF Symbols as Vector SVG/PDF/PNG
• Hyperscalers have already outspent most famous US megaprojects
• NASA Force
• Middle schooler finds coin from Troy in Berlin
• Landmark ancient-genome study shows surprise acceleration of human evolution
• NIST gives up enriching most CVEs
• Casus Belli Engineering
• Introducing: ShaderPad
• The Unix executable as a Smalltalk method (2025) [video]
• The GNU libc atanh is correctly rounded