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First off, this book has good, solid psychology behind it - and human psychology isn't dated. The ability to understand how technology can be used to persuade people to behave in certain ways, to elicit behaviors, and that technology can be used as a tool, as a social actor or as a medium for information is pretty solid and "timeless" material. Where the book falls short today is that it was written nearly 12 years ago. Many of the technology elements have been addressed or surpassed. The directional understanding of the author, especially in the area of mobile technology, looks prescient. However, these insights were far more relevant in 2002 than 2013. If you are in the process of software design or gamification, this book will provide some decent background, but there are many newer and better texts out there. What was probably a 5 star book in 2002 is 3 stars today.