I want you to tell me something positive about the future. It's good to think positively, I learned that recently. Brain-computer interfaces are a link from your brain to a computer. Helps us to communicate via a computer. When you say a word, your brain produces... It makes a pattern. It produces electrical signals,. So... And scientists have managed to connect your brain to an internet machine. They can help people that can't talk and those trapped in their own bodies. By thinking, you can move a cursor left or right; change the screen from one side to the other. But they're now working on how to use this technology for military applications.