48-Hour Field Notes: Same Prompt, Same Code, Different Answer — So I Built a Replay Cassette
This story is from 2026-10-19. It is preserved in the archive; the latest stories are on the live feed.
At hour three of a prompt-refactor session, I asked myself a question that should have had an obvious answer. Did the new system prompt actually improve the parser output, or did it just change it in a way that felt better? I could not answer, because I had no frozen baseline and every comparison c…
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- 2026-10-19 09:07 · DEV Community — AI
48-Hour Field Notes: Same Prompt, Same Code, Different Answer — So I Built a Replay Cassette