"Persuasion is the art of getting people to do what you want them to do, and to like it." ~ President Eisenhower

Good prototypes don't just communicate – they persuade.

Prototypes beat words and pictures. If a picture is worth a thousand words, then a good prototype is worth a thousand pictures.

It if easy to reject a dry report or a flat drawing. But models often surprise, making it easier to change your mind and accept new ideas. Or make hard choices, such as forgoing costly and complex features. Give your management team a report, and it's likely they won't be able to make a crisp decision. But a prototype is almost like a spokesperson for a particular point of view, crystallizing the group's feedback and keeping the things moving.