An introduction! (Score 4, Insightful)

All staff working on a game product should have training like this book gives; a designer's perspective should pervade the entire project, and the concept and goal of "fun" needs to be in every part of the product. Often, the goal of 1/2 the team is making the interface or some part of the game compatible with how the game engine does rendering to ensure we get an extra 5 fps here and there.