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What did you get told as a child that you realised was a lie as you got older? (lemmy.world)

submitted 4 months ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 4 months ago

Not as such. But it also doesn't mean that it can't have catastrophic results.

Your water heater has an overpressure valve, but just one. A failure in that valve and a temperature regulator and you can have your hot water heater shooting up through your roof.

Your furnace has a control board. It turns the gas on, hits the igniter, watches for flame. An older, shittier designs, it was entirely possible for just one or two sensors to go bad and run the furnace to the point of melting down and have the house burned down. Source: happened to me on vacation many decades ago.