时间线卡片：触发 → 传染 → 政策 → 家庭影响

「时间线卡片：触发 → 传染 → 政策 → 家庭影响」（经济危机讲解）字幕级无露脸大纲：钩子、结构时间轴、可核对事实与原创化提醒；参考 2 条上传者字幕。

角度

基于人工字幕定时节拍的选题大纲：时间线卡片：触发 → 传染 → 政策 → 家庭影响
人工字幕参考：GPOv72Awo68、SwaCg7Gwtzw
只复用定时节拍与可引用事实——旁白须原创；时间戳上屏

钩子

0:00–0:40: 用人工字幕里的真实节拍冷开场，承诺为「时间线卡片：触发 → 传染 → 政策 → 家庭影响」给出可执行的无露脸大纲：时间轴 + 带时间戳事实 + 原创化提醒。旁白须原创，禁止照抄参考片脚本。 GPOv72Awo68@0:01 SwaCg7Gwtzw@0:07

结构时间轴展开收起

GPOv72Awo68 0:01–1:03 — Jacob: Welcome to Crash Course Economics. And today we're going to do something a little different. We're going to explore one moment in history in depth.
GPOv72Awo68 1:04–2:15 — Every month, the homeowner has to pay back a portion of the principle, plus interest, to whomever holds the piece of paper.
GPOv72Awo68 2:21–3:34 — But big money, global investors didn't want to just buy up my mortgage, and Stan's mortgage. It's too much hassle to deal with us as individuals.
GPOv72Awo68 3:38–4:47 — Eventually, some institutions even started using what are called predatory ending practices to generate mortgages.
GPOv72Awo68 4:52–5:53 — Actually, let's go to the Housing Bubble. Rapid increases, driven by irrational decisions.
GPOv72Awo68 5:55–7:00 — There was another financial instrument that financial institutions had on their books that exacerbated all of these problems--unregulated, over-the-counter derivatives, including s…
SwaCg7Gwtzw 0:07–1:14 — For millennia, the people of Britain had been using bronze to make tools and jewelry, and as a currency for trade.
SwaCg7Gwtzw 1:20–2:25 — An economy’s relationship between supply and demand is reflected in its inflation rates and interest rates.
SwaCg7Gwtzw 2:29–3:35 — The most obvious causes are shocks like natural disaster, war, and geopolitical factors.
SwaCg7Gwtzw 3:39–4:43 — In response, producers might cut operating costs to help weather the expected decline in demand.

字幕可核对事实展开收起

字幕依据：Jacob: Welcome to Crash Course Economics. And today we're going to do something a little different. We're going to explore one moment in history in depth. We're going to talk about how the 2008 Financial Crisis happened and the government response to it in the United States. GPOv72Awo68@0:01
字幕依据：But big money, global investors didn't want to just buy up my mortgage, and Stan's mortgage. It's too much hassle to deal with us as individuals. Instead, they bought investments called mortgage backed-securities. Mortgage backed-securities are created when large financial institutions securitize mortgages. GPOv72Awo68@2:21
字幕依据：Eventually, some institutions even started using what are called predatory ending practices to generate mortgages. They made loans without verifying income and offered absurd, adjustable rate mortgages with payments people could afford at first, but quickly ballooned beyond their means. GPOv72Awo68@3:38
字幕依据：Actually, let's go to the Housing Bubble. Rapid increases, driven by irrational decisions. Well, this was a bubble, and bubbles have an annoying tendency to burst. People just couldn't pay for their incredibly expensive houses, or keep up with their ballooning mortgage payments. GPOv72Awo68@4:52
字幕依据：There was another financial instrument that financial institutions had on their books that exacerbated all of these problems--unregulated, over-the-counter derivatives, including something called credit default swaps, that were basically sold as insurance against mortgage backed securities. GPOv72Awo68@5:55
字幕依据：For millennia, the people of Britain had been using bronze to make tools and jewelry, and as a currency for trade. But around 800 BCE, that began to change: the value of bronze declined, causing social upheaval and an economic crisis— what we would call a recession today. SwaCg7Gwtzw@0:07
字幕依据：An economy’s relationship between supply and demand is reflected in its inflation rates and interest rates. Inflation happens when goods and services get more expensive. Put another way, the value of money decreases. Still, inflation isn’t necessarily a bad thing. SwaCg7Gwtzw@1:20
字幕依据：The most obvious causes are shocks like natural disaster, war, and geopolitical factors. An earthquake, for example, can destroy the infrastructure needed to produce important commodities such as oil. That forces the supply side of the economy to charge more for products that use oil, discouraging demand and potentially prompting a recession. SwaCg7Gwtzw@2:29

节拍 / 大纲

钩子（0:00–0:40）：冷开场点题「时间线卡片：触发 → 传染 → 政策 → 家庭影响」——点题讲清「时间线卡片：触发 → 传染 → 」本拍情节，点出 2008（旁白原创，勿照抄参考片）。
要点 1：点题讲清「时间线卡片：触发 → 传染 → 」本拍情节，点出 2008（GPOv72Awo68@0:01）。
要点 2：演示展开「时间线卡片：触发 → 传染 → 」本拍情节（GPOv72Awo68@2:21）。
要点 3：对照说明「时间线卡片：触发 → 传染 → 」本拍情节（GPOv72Awo68@3:38）。
要点 4：落地操作「时间线卡片：触发 → 传染 → 」本拍情节（GPOv72Awo68@4:52）。
要点 5：收束提醒「时间线卡片：触发 → 传染 → 」本拍情节（GPOv72Awo68@5:55）。
收尾：三条定时引用回顾卡 + 来源上屏。旁白须原创。

转场

冷开场后打标题卡点明「时间线卡片：触发 → 传染 → 政策 → 家庭影响」的承诺。
切换参考片时用下三分显示 video id + 时间戳，方便核对。
收尾前定格回顾卡，放入事实列表里 3 个可核对点。

收尾 / CTA

用回顾卡结束「时间线卡片：触发 → 传染 → 政策 → 家庭影响」，列出 3 条定时引用；评论区征集下一子角度。旁白须原创——只复用节拍，不复用原片台词。

参考片对照

多参考时按「对题片段密度」分配时长，默认不要均分。
参考 GPOv72Awo68：保留定时节拍，去掉广告/片尾求订阅。
参考 SwaCg7Gwtzw：保留定时节拍，去掉广告/片尾求订阅。

原创化建议

TTS 旁白原创；画面下三分标注片名与时间戳作研究引用。
不要粘贴主持人梗、赞助口播或片尾固定 CTA。
优先使用带时间戳的具体事实，避免空泛的「专家说」。
时间轴/事实里没有的主张：删掉，或明确标成你的假说。

参照片

How it Happened - The 2008 Financial Crisis: Crash Course Economics #12 GPOv72Awo68
What causes an economic recession? - Richard Coffin SwaCg7Gwtzw

方法

yt-dlp VTT 人工字幕（上传者提供，非自动/ASR）→ 全文按 60–90 秒切段（超长视频关键词定位）→ 选题级编辑综合。仅结构参考；旁白须原创。