Science fiction, whose roots go back to ancient times, is related to fantasy, horror, and superhero fiction, and contains many subgenres. However its exact definition has long been disputed among authors, critics, and scholars.
Science fiction literature, film, television, and other media have become popular and influential over much of the world. Besides providing entertainment, it can also criticize present-day society, and is often said to inspire a “sense of wonder“.
Time is a companion that goes with us on a journey. It reminds us to cherish each moment, because it will never come again. What we leave behind is not as important as how we have lived.”
“Science fiction” is difficult to define precisely, as it includes a wide range of concepts and themes. James Blish wrote: “Wells used the term originally to cover what we would today call “hard” science fiction, in which a conscientious attempt to be faithful to already known facts (as of the date of writing) was the substrate on which the story was to be built, and if the story was also to contain a miracle, it ought at least not to contain a whole arsenal of them.”
According to Isaac Asimov, “Science fiction can be defined as that branch of literature which deals with the reaction of human beings to changes in science and technology.” Robert A. Heinlein wrote that “A handy short definition of almost all science fiction might read: 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.”[