I'd never actually got through this book, and Jon Kolko is somewhat of a minor god in the design world, so I was expecting a lot. Unfortunately, it feels a little dull, and a little confused on who the audience is, precisely. That in itself is frustrating, because you find yourself constantly having to switch "hats" and perspectives, but not in a way that makes you explore an issue deeper, but rather, just struggling to understand what the point is. I think this is partly a result of the goal of the book - to define and articulate what interaction design is, which is noble in theory, but in practice, just isn't interesting to me. I don't want to know what interaction design is, I want to figure out how to become better at it.