Dreams: simulated reality

   I was thinking about dreams. Many people believe that dreams are just pure fiction. Maybe this is correct, maybe Sigmund Freud wasen't crazy enough, maybe..

   What if dreams would only be a simulated reality? What if we are not yet awake and our life is just a dream and all the people we know are just part of the big dreams? Maybe to be a collective dreams, who knows.. What do you think?