I love science fiction. As a youngster, I used to buy all the pulp magazines. I loved them. I was very pleased when I was assigned to direct my first SF film because I was still an avid fan. The more I did this type of film the better I liked it, because the studio left me alone. Fortunately, no one at that time at the studio was an expert at directing SF films, so I claimed to be one. I wasn't, of course, but the studio didn't know that. So they never argued with me.