Fundamentally, this book introduces the reader to some aspects of digital literacy which are far more than the muscular vernacular of the new social media. It is based on the idea that it is not enough for educational administrators to purchase the latest technology if they have no idea of the range and scope of the hardware, on the one hand, or of the logical processes underlying the choice, iteration and execution of the software, on the other. Generalized nets marry the soft approximations of humans with the hard precision of the computer.