“To do that right, you have to prototype the whole experience—give every part the weight and reality of a physical object. Regardless of whether your product is made of atoms or bits or both, the process is the same. Draw pictures. Make models. Pin mood boards. Sketch out the bones of the process in rough wireframes. Write imaginary press releases. Create detailed mock-ups that show how a customer would travel from an ad to the website to the app and what information they would see at each touchpoint. Write up the reactions you’d want to get from early adopters, the headlines you’d want to see from reviewers, the feelings you want to evoke in everyone. Make it visible. Physical. Get it out of your head and onto something you can touch. And don’t wait until your product is done to get started—map out the whole journey as you map out what your product will do.”