the part of an interaction design that contains a theme, notion, or idea to communicate a design vision... connects user's and designers mental model
the part of an interaction design that contains a theme, notion, or idea to communicate a design vision... connects user's and designers mental model
•critique and compare multiple design concepts  •sort out best one  •weigh concept feasibility  •prototypes: low-fidelity paper, storyboards   •&"evaluate&" via storytelling