108: DTF:HN for April 18, 2026

Your Daily Tech Feed covering the top 10 stories on Hacker News for April 18, 2026. Featuring: 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, and more.

Stories covered:

1. Category Theory Illustrated – Orders
   (Article | HN Discussion | 🎧 0:33)
2. Amiga Graphics
   (Article | HN Discussion | 🎧 4:35)
3. Michael Rabin Has Died
   (Article | HN Discussion | 🎧 8:02)
4. Claude Design
   (Article | HN Discussion | 🎧 11:30)
5. Show HN: I made a calculator that works over disjoint sets of intervals
   (Article | HN Discussion | 🎧 14:44)
6. Measuring Claude 4.7's tokenizer costs
   (Article | HN Discussion | 🎧 18:19)
7. Towards trust in Emacs
   (Article | HN Discussion | 🎧 21:52)
8. All 12 moonwalkers had "lunar hay fever" from dust smelling like gunpowder (2018)
   (Article | HN Discussion | 🎧 24:42)
9. The simple geometry behind any road
   (Article | HN Discussion | 🎧 28:06)
10. Spending 3 months coding by hand
    (Article | HN Discussion | 🎧 31:07)