A genre normally has a set list of possible themes in there narratives. Science fiction has a few strong themes running throughout the history of this recently popular genre; science fiction wasn't popularized until the 1950's. Most science fiction tales have a prophetic nature and are often set in a future time. They are usually visualized through fanciful settings and advanced technology gadgets, scientific developments or by amazing special effects.
             A strong theme is science fiction films express society's anxiety about technology and how to forecast and control the impact of technological and environmental changes on society. We use technology everyday of our lives, but most of us do not actually understand how the machine works. And most films show this ignorance and the repercussions of underestimating technological advances. There will be encounters with aliens, creatures or beings, of which a battle will occur, good vs. evil scenario. Although the aliens are not always bad for example, E.T the extra terrestrial. Alien Invader films in the Cold War Era (1950s) portrayed the human race as victimized and at the mercy
             The film Independence Day contains many strong themes, it contains the aliens. Also the aliens invade our planet, which makes the audience feel the theme of the fear of the unknown. But this theme is treated in a very "Alfred Hitchcock" attitude, to build up the suspense in the first sequence. The audience is shown the great mass of a spaceship heading past the moon towards the earth, before it is acknowledged by any of the characters. The spaceship is just very metallic and cold, not much is shown at this point, but this adds to the suspense more, for what people don't know scares them the most.
             Although the film has a serious tone at first, with very dominant military and political characters and situations, there are many humorous moments. For example the song "The end...