Stop Asking AI to Write the PRD
Ask an LLM to write a PRD and it will often produce a beautiful lie.
The headings are right. The tone sounds professional. User stories appear in a tidy list. Edge cases have names. The document feels complete because language models are exceptionally good at completing document-shaped patterns.
Then engineering asks where the refund limit came from. Legal says the retention rule is wrong. Support says the workflow ignores a manual exception. Two acceptance criteria contradict each other. Nobody can tell which sentence came from an interview, which came from an old document, and which was invented to make the prose flow.
The problem is not that the PRD needs a better prompt.
The problem is that prose was treated as the system of record.
A Requirements System Should Behave Like a Compiler
A compiler does not beautify source text. It transforms input through explicit intermediate representations, validates constraints, reports...
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