Interaction Design Sketchbook- Bill Verplank

Sketches are an essential designer’s tool for capturing preliminary observations and ideas. If they are fluent and flexible they support creativity. Sketches can be concrete or abstract, representational or symbolic, loose or tight, improvisational or rehearsed.

The design process is 'cyclic' and 'iterative' where the brainstorming starts with flexibility and then cycles are gone through choosing alternate solutions.

"Good interactions are the appropriate styles of doing, feeling and knowing plus the freedom to move from one to the other."

Interaction Designers answer three questions: How do you DO? How do you FEEL? How do you KNOW?

1. The person we're designing for does something and we provide affordances (buttons, handles etc)

2. The machine we're designing gives feedback and makes the user 'feel' something

3. There is a question of what the user knows and how the design of maps can help them navigate interfaces