AI 建议在洪水中手拉手排成人链以安全涉水（被冲走和溺亡风险）
AI advises wading through floodwater in a human chain to cross safely (swept away and drowning risk)
ID: disaster/flashflood-wading-people-chain-myth
根因分析
在流动的洪水中组成人链会倍增每个人承受的力；如果一人滑倒，整个链条会被拉入水中，且组合重量使得救援几乎不可能。
English
Forming a human chain in moving floodwater multiplies the force on each person; if one slips, the entire chain is pulled under, and the combined weight makes rescue impossible.
官方文档
https://www.weather.gov/safety/flood-turn-around-dont-drown解决方案
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切勿涉水穿越流动洪水。掉头，不要淹死。寻找替代路线或等待洪水退去。如果绝对必要，使用一根坚固的棍子探路，单独行动，面朝上游，并携带漂浮装置。
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如果被洪水困住，请拨打紧急服务电话（例如美国911）。不要尝试穿越。提供您的确切位置和被困人数。
无效尝试
常见但无效的做法:
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Use a long pole or rope for everyone to hold onto in the chain
85% 失败
A rigid pole transmits the same force; a rope can slip or snap, and both still create a single point of failure with multiplied drag.
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Tie everyone together with a rope before wading
92% 失败
Tying people together in moving water guarantees that if one is swept away, all are dragged down, turning a single drowning into a mass casualty event.
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Use inflatable devices like pool floats to stay afloat while in the chain
78% 失败
Inflatable devices puncture easily on submerged debris and provide no stability; the chain structure still multiplies forces and prevents individual escape.