sentences:  Although it was originally intended to serve as a tool to help us to write and communicate with others, it has more recently transformed into a means of providing us with virtual worlds which we can step into and interact with other people.The book discusses how our everyday interactions with computers affect our minds and the way we think about ourselves.Turkle also discusses the way our human identity is changing due to the fading boundary between humans and computers, and how people now have trouble distinguishing between humans and machines.