Bank Dev on COBOL Duty: Years of Reading Code Is How I Catch Claude's Hallucinations
erwinalp5 · reddit · 2026-10-06
A bank programmer working on legacy COBOL/Java (no AI allowed for compliance) tested Claude on side projects and found it genuinely works — but it confidently claims it did things it didn't. CodeRabbit catches some issues, but mostly his years of reading others' code give him the gut feeling something is off. His pointed question: how will developers who never had to read code notice when the agent is wrong? The summary tells you what it did, not what you meant. A lot of people are going to learn that the hard way.
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