My old English buddy, John Rackham, wrote and told me what made science fiction different from all other kinds of literature - science fiction is written according to the science fiction method. ↗
Stories where the author has known very little, but run a computer program that tells him how to construct a planet, and looked up specific things about rocketry and so on, really suck. ↗
I personally have never made a movie in Hollywood, because I don't want to get up in my own bed and then go to the movie set, and then come home at night to my real life. ↗