But if we never dreamed it so, then we never would have tried and never would have broken down those other barriers. Just the fact that we've broken down all those other barriers inspires me to believe.
I think predetermining that faster-than-light information transmission is possible is a bastardization of scientific progress. I don't see physics as a quest to break barriers, I see it as a quest to understand the nature of the universe. If the nature of the universe is that humanity will never colonize another world in a lifetime, then so be it. We simply have to learn to deal with the realities of our existence.
