Guys guys guys. Put your self in the head of human living 200 years ago, the things we can do today is pure sci-fi. Go back another 500 years and we would be aliens to them. Now, the improvements of the human knowledge will speed up the next 200rd years, add another 500 and they would be aliens if we met them, if not semi gods. Never say never, guys! http://science.howstuffworks.com/env...-500-years.htm