Triggers completeness motivation. Hinting at a method engages the brain's desire for structured knowledge.

Triggers a prediction error. When something sounds wrong, the brain's threat-detection fires, demanding evaluation.

Hijacks the brain's narrative transport. Once a story begins, the viewer enters the scene and can't exit without resolution.

Exploits the information gap effect. The brain can't rest until it closes an open question, so the viewer cannot scroll away.

Triggers an orienting response. The brain involuntarily redirects attention toward unexpected stimuli, breaking scroll autopilot.