Science fiction has been described as the literature of ideas.
I agree, sci-fi is one of the most inventive and imaginative genres of literature. 
I like that It usually avoids the supernatural
Yes, good science fiction usually utilizes very good science and mixes in unique ideas to alter the story. I personally enjoy forward-looking science fiction.
17th and early 19th centuries, following the scientific revolution and major discoveries in astronomy, physics, and mathematics.
Question of deeper origins aside, science fiction developed and boomed in the 20th century, as the deep integration of science and inventions into daily life encouraged a greater interest in literature that explores the relationship between technology, society, and the individual. Scholar Robert Scholes calls the history of science fiction "the history of humanity's changing attitudes toward space and time ... the history of our growing understanding of the universe and
, parallel universes and extraterrestrial life. Science fiction often explores the potential consequences of scientific and other innovations, and has been called a "literature of ideas". It usually eschews the supernatural, and unlike the related genre of fantasy, historically science fiction stories were intended to have at least pretense of science-based fact or theory at the time the story was created, but this connection has become tenuous or non-existent in much of science fiction.
The genres Western.
Western fiction is defined primarily by being set