By far the best book I've read this summer on designing for health is The Spirit Catches You and You fall Down by Anne Fadiman. Published in 1998 it's still one of the best treatises on the significance of cultural meaning to the practice of healthcare. The collision between Hmong understandings of disease, family, and medicine and Western perspectives is, of course, more dramatic than many of the issues that designers and clinicians see on a regular basis. But it provides a good reminder that we all have to listen for the mental models, assumptions and perspectives of people who we're trying to work with. This is especially important, and especially hard, when conflicts arise. It's also a reminder to take a step back and ask ourselves what mental models and perspectives guide our day-to-day behaviors, and whether they're helping or hurting our attempts to solve a particular problem.