Sci-fi-Fact or Fiction

Does Sci-fi really hold any particular meaning or value. What I mean to say is whether or not the genre is referring to a vision of the future or is it just conjured up from imaginative minds. I myself believe that it is a representation of what human society can achieve through progression of scientific and technologial endeavour. It is entirely possible theoretically to achieve feats of mass speed but all that is required is for innovation to be matched by a physical representation of the theories that scientists fire around every day. Our society has the knowledge to do what the movies do but stall at doing so because of other matters such as economic related aspects. It is a costly business but if we want to expand beyond our planet, we as a society must strive to do so and break the deadlock that is being repressed to one planet. Sci-fi gives us the ideas but these ideas are based on what knowledge we have of science although most people will struggle to believe this. Are you a believer sci-fi being based on possible achievements of the future? Feel free to post a reply on this site.