As American science fiction writier Robert A. Heinlein once wrote, “science fiction s is realistic speculation about possible future events, based solidly on adequate knowledge of the real world, past and present, and on a thorough understanding of the nature and significance of the scientific method.” As a scifi beginner, I found out that science fiction is hard to define precisely, because it includes many categories. My previous understanding of science fiction means stories related to outer space or advanced technology such as AI. However, recent years I discovered that science fiction also relates to fantasy such as Godzilla and Avatar that depicts intellectuals beyond human beings.

Science fiction, also known as “Sci-fi”, is a genre of speculative fiction with imagination and future themes. It often deals with imaged science or technology upon human beings. It includes topics such as fantasy, horror and artificial intelligence. If we separate the word to understand its definition, it means any unreal stories related to science. Personally, I will divide science fiction into six categories: machine, monster, human, society, space and time. Theme related to machines and space are popular in recent years because of the development of advanced technology, but past science fictions are more related to monsters or aliens. Human is more related to sex and gender such as Le Guin’s The Left Hand Darkness and The Handmaid’s Tale. Those stories discuss the relationship between the sexes and depict a society that breaks conventional values of men and women. Society includes utopias and dystopias such as 1984 and Brave New World. It also includes society that’s neither perfect nor terrible but different such as The Ophiuchi Hotline. Space and time travel are also popular topics in science fiction such as Star Wars and Looper. Those stories depict human beings’ curiosity about the future and the past.