THe other day, I'm watching the show "The universe" on the history channel. Its about discovering or meeting alien life forms. A good episode. They stated that its very likely that we might meet machines like robots of some sort from a alien civilation that is long gone if anything else due to the extreme distances from our worlds.
So then I started thinking...
Thinking back to the time of columbus and how so many people believed the world to be flat. Actually thinking they would fall off the world if they went too far in traveling. Isn't it fair to say that who knows what kind of technology will surface regarding space travel in the next 500 years?