Recently, I've been meditating on what makes brainstorming for interaction design so challenging. (Not just because I'm leading a workshop about it at Interaction 11.)
After spending a few years in the trenches of product and service design, I've discovered that ideation for interaction doesn't operate quite the same as other design disciplines—especially when compared to visual communication, branding, marketing, and so forth.
Why? Because interaction designers are creating multifarious, complex systems comprised of repeating elements that must cohere into a recognizable and usable whole. And more likely than not, what you're attempting to modify or construct wholesale over the life of a project is an interaction model.
Never heard of an interaction model? To explain, let's take a trip to your local art gallery... in my next post.