Why is the computer powerful?

The computer is powerful because it helps us communicate with people. For example, if I want to talk to someone from across the world using the computer, we can do an online webcam conversation or by email. We could also IM each other and communicate that way. It makes it so much easier than having to raise the phone bill to talk with someone from across the world or saving the expenses to go visit them and talk face to face whenever the we feel like talking.