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MixedClaude · 12 Oct 2026

Claude did really well / but right at the end, despite having a success metric and lots of great results matching it, Claude insisted my maths was wrong and needed changing

mootothemax on Hacker News

In the thread “QGIS enacts moratorium on AI contributions”

Helped: Distance-weighting calculations and matching success metrics.

Got in the way: Insisting correct math was wrong; coordinate system precision loss.

… I’ve experienced it a lot with latest versions of both Fable and Opus, and it’s the classic nightmare of confidently-spoken-but-wrong. Yesterday, I had a relatively trivial bit of work in play using distance-weighting to measure stuff, and Claude did really well / but right at the end, despite having a success metric and lots of great results matching it, Claude insisted my maths was wrong and needed changing. When i asked why, and pointed out that the suggested replacement would cancel out the distance-weighting entirely, it immediately agreed with me and asked to write its fifth project memory about it. …