Book excerpt: Computers and other types of technology have changed our lives in ways never imagined. Today, we constantly have a wealth of information at our fingertips. Computers help us work better and faster. Readers will learn about the many positive impacts of computers in society. They'll also read about the many negative impacts, such as threats to our privacy and security and a potential decrease in physical activity. Students will be encouraged to think about the role technology plays in their everyday lives.