The Rewrite Fractal Has No Layer Boundary
TL;DR: On the same Monday morning, a hacker replaced a $120K bowling center with $1,600 in ESP32s, and Claude Code helped rewrite Bun from Zig to Rust. The rewrite fractal doesn't care about layers. It eats everything from microcontrollers to language runtimes. Bowling Alley, ESP32, $1,600 This is the top story on Hacker News right now: 1,963 points, 205 comments. Somebody walked into a bowling alley, looked at the $120,000 proprietary scoring system, and thought: "I could do this with ESP32s." And they did. ESP32 is a $3 microcontroller. It has WiFi, Bluetooth, and enough compute to run a bowling alley. Sixteen of them, plus some sensors, plus a Raspberry Pi for the display — $1,600 total. The original system cost $120,000 and locked the bowling alley into a single vendor's hardware, software, and support contracts. This is not a story about bowling. It's a story about the rewrite fractal…