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Attention Capture
Entry #0782
Why a thumbnail with an open mouth wins the click
An open-mouth thumbnail wins clicks because the brain reads an open mouth as emotional urgency, triggering a curiosity reflex that demands resolution.
Novice
The hidden part
#0782
The open mouth is not expressing surprise — it is inducing it. The viewer mirrors the urgency and clicks to resolve a tension the thumbnail created in under a second.