Believing that films were strictly for entertainment, Golden Age film producer Sam Goldywn is reputed to have said, "If you want to send a message, use Western Union." Notwithstanding a handful of so-called social problem films, Hollywood films do tend more toward the innocuous than the politically confrontational. Science fiction films, though, are often notable for their idea-driven narratives; social commentary, although not always profound, is a frequent element of sci-fi. It is not unusual for even low-budget, low-concept science fiction films to "send messages" about human nature or the relationship of humans and machines. Their lessons may be conveyed with all the subtlety of a Western Union telegram, but there is no denying that good science fiction films try harder than other genres to ask "deep" questions: Why are we here? What is our future? Will technology save or destroy us?