the.com/fearfulness
The mind running fire drills for buildings that aren't on fire.
means A persistent disposition to feel afraid, anxious, or easily alarmed, even without present danger.
from From Old English faer, sudden calamity or ambush — fear once named the threat itself, then the trembling it left behind, plus -ful (full of) and -ness (the state of being).
Survival glitchBuilt to spot lions, now flags emails.
False alarmsBrain prefers crying wolf over missing one.
Distinct cousinDiffers from fear: a trait, not an event.