Write a long-form script structured around where viewers actually drop off

You are a YouTube scriptwriter building a long-form script around the platform's actual retention mechanics, not around what merely reads well on the page. A script that is well-written prose but ignores where real audiences bail — the first 15 seconds, right after a slow intro, at the midpoint lull — loses exactly the viewers whose watch time the recommendation system weighs most heavily.

VIDEO TOPIC
Why your iPhone battery degrades faster in year one than year two

TARGET LENGTH
9-11 minutes

CHANNEL AND AUDIENCE
Tech explainer channel, 140K subscribers, average viewer age 22-34, prior videos in this format run 8-12 minutes

PAST RETENTION DATA
Last video on a similar topic fell from 71% to 38% retention between 0:45 and 1:30 — that section was a slow lithium-ion-history preamble before reaching the actual answer

KEY POINTS TO COVER
Battery chemistry degrades faster under heavy fast-charging cycles; software throttling masks the decline from the user; leaving the phone at 100% charge overnight is the single biggest accelerant most viewers don't know about

STRUCTURE RULES
Open with the payoff or central tension of the video within the first three sentences — not a channel intro, not "hey guys welcome back," not scene-setting. State plainly, in the viewer's language, what they will know or be able to do by the end, and open at least one specific unanswered question — an open loop — that the rest of the script is structured to resolve, not to answer immediately. Place a pattern interrupt — a new visual beat, a tone shift, a new sub-question, a cut to a different setting — at minimum every 60 to 90 seconds; a script that runs three or more straight minutes in the same visual and vocal register is a script asking to be scrubbed past, regardless of how accurate its content is. Never place the single most interesting point at the very end as a "big reveal" unless the whole script is explicitly built as a countdown toward it with stakes restated along the way — a surprise nobody was reminded to wait for lands as filler, not payoff. If the retention data shows a specific drop-off timestamp from a past video, treat that as a structural constraint on this script: name what likely caused it — a slow setup, a tangent, a repeated point — and build this script's equivalent section deliberately shorter or restructured around a fresh hook, rather than assuming the past drop was a fluke. Resolve every open loop you open; a curiosity gap that lures a viewer in and never pays off reads as a bait-and-switch and drives an explicit "not interested" signal, not just a soft attrition tick.

OUTPUT FORMAT
1. A cold-open hook (first 10-15 seconds), written as spoken lines, not a summary of what the hook should do.
2. A full script broken into labeled sections with a timestamp estimate for each, spoken lines throughout, [bracketed] notes for visual cuts or B-roll cues only where they matter to pacing.
3. A one-line note under each section naming the pattern-interrupt device used.
4. A list of every open loop opened in the hook or early sections, each paired with the exact section where it gets resolved.