An agent wrote 3,000 lines of his billing code — and nobody, including him, understands it
Specialist_Agent3599 · reddit · 2026-09-09
A developer describes a new twist on the bus factor problem: he owns a 3,000-line billing sync that an AI agent wrote eight months ago. He reviewed and approved it, but can only explain what it does, not why.
- Tooling like CodeRabbit flagged plenty of issues at the time, which doesn't help comprehension now
- This isn't hoarded knowledge — no human ever truly held it
The post sparks discussion on how handover and documentation practices break down when the code's author was a model.
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