Comment on What's a 'common sense' thing that you genuinely don't understand, and have been too embarrassed to ask about until now?

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Brkdncr@lemmy.world ⁨8⁩ ⁨hours⁩ ago

Honestly how did two wires on old phones power the phone, got it to ring, hold a two-way conversation, and also dial out? Only two wires?!?

I took a class at college on it and the mystery was revealed but I’m still convinced it’s magic.

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