the.com/false alarm

The relief of a crisis that respected your time enough not to happen.

means A warning or sign of danger that turns out, on inspection, to have signaled nothing real.

from Straightforward compound: 'alarm' traces back through French to the Italian battle cry 'all'arme!' — 'to the weapons!' — shouted when danger appeared, so an 'alarm' was originally the call itself, not a device. Add 'false' and you get a cry to arms that should never have been raised — a lineage that still echoes faintly every time a fire alarm turns out to be burnt toast.

origin
literal fire-bell errors, 1800s firefighting jargon
body cost
adrenaline doesn't know it was unnecessary
social use
often announced with visible disappointment, oddly
paradox
too many breed the real disaster: ignoring the next one
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