If the context includes the experience as well as the product, we will also want a representation for understanding, exploring, or communicating what it might be like to engage with the design.
Often, the same application can be incredibly helpful or incredibly frustrating depending on the environmental context. That's why I find contextual inquiry to be a particularly promising methodology-- it explores the use of the application within its most common context. Motorola does something similar in their usability testing of new phones. They change the tasks and parameters of the test depending on if the user is in a "bedroom," "living room," or "busy street"-- all simulated environments to explore how users respond to the same product in different environmental contexts.