the.com/defection

Loyalty's expiration date, announced publicly and usually at the worst time for everyone else.

means The act of abandoning one group, cause, or country for another, often a rival one — a formal, public breaking of allegiance.

from From Latin defectio, 'a failing' or 'revolt,' built from deficere, 'to desert, fail, or undo' — a blend of de- ('away, undoing') and facere ('to do/make'). The same root gives us 'deficient.' A defector, etymologically, isn't just leaving — they're un-making a bond that was supposed to hold.

game theory
the rational move when trust costs more than betrayal
cold war classic
spies defected, documentaries followed, nobody felt safer
prisoner's dilemma
both defect, both lose, that is the whole point
political sport
one defection and suddenly the majority flips overnight
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