Storyboard a short explainer for [audience and intended medium].
The learner should understand [one useful outcome]. Use only the
supplied facts/rules. Give [number] scenes with: message, source ID,
visual idea, editable on-screen words and what must not be implied.
Keep qualifications and exceptions. Identify omissions and unresolved
facts. Do not invent tests, benefits, approvals or product features.
Return the storyboard before generating any images or video.

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Review this storyboard against the supplied source. For each scene,
state the new understanding it adds, the rule it preserves and any
unsupported implication. Identify redundant scenes or missing exceptions.
Keep real words editable outside generated artwork. Do not claim the
storyboard was tested with viewers or that visuals were generated yet.

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Scene [ID] changes [source rule] into [incorrect implication].
Restore the exact qualification from source [ID]. Revise that scene's
message, visual request and editable words together. Keep the useful
sequence structure. Do not add an unsupported claim to make the ending
more exciting. Show the corrected storyboard for another source check.
