Science fiction writers, I am sorry to say, really do not know anything. We can't talk about science, because our knowledge of it is limited and unofficial, and usually our fiction is dreadful.
Source: I Hope I Shall Arrive Soon, Introduction, How to Build a Universe That Doesn't Fall Apart Two Days Later (1986).
-- Philip K Dick, (Dec 16 1928-1982), US science fiction writer; He is a science fiction author who won the 1962 Hugo award for Man in the High Castle.