The document discusses a workshop held at Cannes Festival of Creativity where attendees literally wrote a book on the future of advertising in just two hours. Through exercises and collaborations using tools like Google Forms and an Instagram photo aggregator, 120 attendees provided predictions for the future of advertising over the next 10 years. These predictions included ideas like advertising directly to individuals using personalization technologies, open source ideas and data, brand-sponsored consumables, and fully integrated smart clothing.