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Cohibaluxe t1_ium0tyo wrote

Reply to comment by penguinsheiter in TIL that Koreans have had heated floor technology since at least 1,000 B.C.E. by Nice-Violinist-6395

They think the air being moved is effectively a vacuum, meaning where the air is sucked from loses its air. If you have a fan pointing outside, that means that slowly enough to not make you realize it, you’re removing the air and eventually that would lead to suffocation.

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arkangelic t1_iumf7z3 wrote

But why wouldn't they expect air to also flow back?

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Cohibaluxe t1_iummzhz wrote

Ignorance, I’d presume. Someone who doesn’t understand really understand how air actually works (likely someone uneducated and poor - this myth predates South Korea’s prosperity by a lot) tells it to their friends who also don’t know how it really works, and so on. If everybody else around you tells you something, it’s very likely you’ll just accept it without skepticism.

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