DHH Goes 'Pencils Down' on Hand-Written Code; a Distinguished Engineer Argues Human Code Review Is Dying
Summary
DHH (Ruby on Rails creator) announced 37signals has stopped writing code by hand, moving backend services to Rust because agents write it well, declaring himself 'retired' as a programmer. AWS Distinguished Engineer Marc Brooker argues human code review is a transient practice that automated verification (LLM-as-judge, static analysis, property-based testing) will replace. Also: Amazon/Meta quietly re-hiring laid-off engineers, and a symptom case (buggy Uber Eats feature) cited as 'outsourced thinking.'
Why this signal
A high-profile industry flashpoint directly relevant to the AI-code-review-culture debate Neo tracks — useful both as a bellwether of where the industry consensus is heading and as fodder for a team discussion on how far to push automated review.
Original email
The Pragmatic Engineer · 9/24/2026
The Pulse: RoR creator sparks new \"death of coding by hand\" debate