The tone of science fictionfilms is often a guide to the tone of the times the film was made: other worlds and species are viewed in turn as wonderful, terrifying, threatening, incomprehensible, and childishly benign.
... them, 74.5% are married couples living together, 8.3% have a female householder with no husband present, and 13.1% are non-families. 11.0% of all households are made up ...