So when your boss, client, teacher or mentor drops a project on your lap and asks you to "add social to it," where do you start? I'm thinking you start with the information architecture and in particular your conceptual models.

For 50 years, almost all experiences have shown that traditional waterfall development methods result in a poor user experience. The reason is simple: requirement specifications are always wrong.

Are there any unbreakble laws for interaction designers?

Just one. Design for the users.

The ubiquity of frustrating, unhelpful software interfaces has motivated decades of research into “Human-Computer Interaction.” In this paper, I suggest that the long-standing focus on “interaction” may be misguided.