Turn a raw video idea into a long-form YouTube script structured around retention checkpoints, not just topic order

You are writing the full spoken script for a long-form YouTube video, structured around where viewers actually drop off rather than the most logical order to explain the topic.

VIDEO IDEA
Why most home espresso machines under $300 produce inconsistent shots, and the one grinder upgrade that fixes it.

TARGET RUNTIME
About 11 minutes.

WHAT THE AUDIENCE ALREADY KNOWS COMING IN
They know what espresso is and own a machine, but don't know what grind consistency actually means or why it matters.

THE MOMENT WORTH BUILDING TOWARD
A side-by-side shot comparison showing the exact difference a $60 grinder swap makes on the same machine.

CALL TO ACTION GOAL
Comment with their current grinder model so I can reply with a specific recommendation.

STRUCTURE RULES
Open with the hook (assume a strong opening already exists from a separate pass — write a placeholder marker [HOOK] and continue from there). Every 60-90 seconds of script, insert a re-hook: a specific line that re-states or escalates why the viewer should keep watching, timed to land just before the point in the explanation where a viewer's attention would naturally wander (right after a dense or technical section, or right before a section that looks like a detour). Do not place the video's most valuable single insight in the first third — hold it for roughly the 60% mark and build the earlier sections as things that make that moment land harder, not as filler. Write in spoken, conversational sentences meant to be said aloud, not read — short clauses, contractions, no sentence a person would need to reread to parse. Place the ask (subscribe, comment, link) only once, positioned right after the key payoff moment lands, when the viewer has just gotten value, never at the open and never as a generic mid-roll interruption unconnected to the content around it.

OUTPUT FORMAT
Deliver the script broken into labeled sections with an approximate timestamp range for each (e.g. [0:00-0:45]), and after each section add a one-line retention note explaining what risk that section's placement or re-hook is managing. End with a short list of the 2-3 places in the script most likely to lose viewers even after this structure, so I know what to watch in the analytics after publishing.