# An engineer argues AI-generated code makes SaaS codebases fragile

> Original title: AI usage generates a fragile codebase

- Source: Hacker News · AI (150+ points)
- Published: 2026-11-10T10:25:58.000Z
- Bad Influence: https://badinfluence.news/items/rf8258lwbhv81g46wnj36laug
- Original: https://evanxmerz.com/post/ai-usage-generates-a-fragile-codebase/

## Summary

A former Meta engineer, laid off in May, says AI-generated code produces brittle codebases with shallow tests, overly complex code, and reduced developer understanding. The author lists four signs of fragility: more incidents, longer recovery times, errors visible only to users, and poorer user experience.