A useful record

“One interesting take-away was the three types of interactions people have with products:

• Cognitive. These are usually interactions with new and unfamiliar products or sometimes problem products. Users are focused a lot on the product, not the task at hand. These sorts of interaction result in either knowledge (learning a new skill) or confusion and errors.
• Fluent. Nearly automatic use of a product while performing a task.
• Expressive. These are interactions that help users form relationships with a product, like modifying or personalizing a product. Like, say, customizing a car or putting new wallpaper on your desktop.”