Developer Warns AI Writes Code Faster Than Humans Can Safely Review It

A developer building an analytics product called Zenovay has shared how daily use of AI coding tool Claude Code revealed an unexpected problem: AI generates code far faster than a single developer can thoroughly understand or review it. While the tool can scaffold features, fix bugs, and write tests within minutes, the resulting large diffs often contain decisions the developer cannot fully explain or verify. The author warns that AI-generated code rarely fails outright but may quietly embed wrong assumptions that pass basic tests yet cause subtle issues later. In high-stakes areas like authorization, billing, and data privacy, the developer now insists on personally defining the core rules and reviewing full code paths rather than only changed functions. The piece argues that the friction once inherent in manually writing code served a hidden purpose — slowing output to a pace that allowed genuine understanding — and that AI removes this safeguard, creating a growing "review debt."