The HackerNoon Newsletter: Nano’s Pitch: A Currency That Actually Works (3/5/2026)

How are you, hacker? 🪐 What’s happening in tech today, March 5, 2026? The HackerNoon Newsletter brings the HackerNoon homepage straight to your inbox. On this day, Homebrew Computer Club Holds First Meeting in 1975, Yahoo! Officially Launches in 1955, and we present you with these top quality stories. From The Ambies, Imperfectly: A Night of Good Intentions and Unfortunate Surprises to Nano’s Pitch: A Currency That Actually Works , let’s dive right in. The Mystery of the Ghost Refund: How Apple and Google Send Money Back to a Card They Never Saw By @omotayojude [ 3 Min read ] Learn the technical secrets of how Apple Pay and Google Pay handle refunds through tokenization. Read More. What Happens if You Remove ReLU From a Deep Neural Network? By @emmimalpalexander [ 9 Min read ] A reproducible study shows why removing activations makes deep nets collapse into linear models—plus gradient behavior, depth effects, and boundaries. Read More. Production Observability for Multi-Agent AI (with