He developed the famous "Cone of Learning" (displayed below). From it we can see that he suggested that after two weeks we tend to remember 50% of what we HEAR and SEE highlighting "watching a movie" as an example process.

‘Anytime-Anywhere’ – accessibility ‘Learner-Friendly’ - engaging format Self-paced – pause/rewind Inculcation - repetition for emphasis ‘Blended’ learning approach Practicality – absent learners Competitive Edge -  market leaders