Reiteration Effect

Repeat a statement enough times and people begin to believe it — not because evidence arrived, but because familiarity feels like verification. The tenth hearing of a claim borrows the warmth of recognition, and recognition masquerades as truth.

This is one of the oldest and most exploited levers of persuasion. The slogan repeated until it feels like common sense; the rumour circulated until its familiarity is cited as its proof — "everyone knows that." Everyone knowing is often just everyone having heard.

The mechanism deserves respect: fluency is normally a fair signal. Sentences we have processed before are easier to process, and ease feels like accuracy. The system works well in a world where repeated things are usually true. It fails in a world where repetition is purchased.

The defence is a habit of origin-tracing: when a belief feels obvious, ask where you first met it and what evidence came with it. If the honest answer is "I have just heard it a lot," then you do not hold a conclusion. You hold a recording.